/* ==========================================================================
   Hownlab.com - Modern CSS Framework
   A comprehensive, professional design system for CS student platform
   ========================================================================== */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* CSS Custom Properties (Design System) */
:root {
    /* Color Palette - Professional & Modern */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;
    
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    --success-50: #ecfdf5;
    --success-500: #10b981;
    --success-600: #059669;
    
    --error-50: #fef2f2;
    --error-500: #ef4444;
    --error-600: #dc2626;
    
    --warning-50: #fffbeb;
    --warning-500: #f59e0b;
    --warning-600: #d97706;
    
    /* Semantic Colors */
    --primary: var(--primary-600);
    --primary-hover: var(--primary-700);
    --primary-dark: var(--primary-700);
    --primary-light: var(--primary-50);
    
    --success: var(--success-500);
    --error: var(--error-500);
    --warning: var(--warning-500);
    
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-muted: var(--gray-500);
    --text-inverse: #ffffff;
    
    --bg-primary: #ffffff;
    --bg-secondary: var(--gray-50);
    --bg-tertiary: var(--gray-100);
    
    --border: var(--gray-200);
    --border-color: var(--gray-200);
    --border-focus: var(--primary-600);
    
    /* Typography System */
    --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-family-mono: 'JetBrains Mono', 'Fira Code', Consolas, 'Liberation Mono', Menlo, Courier, monospace;
    
    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-lg: 1.125rem;   /* 18px */
    --font-size-xl: 1.25rem;    /* 20px */
    --font-size-2xl: 1.5rem;    /* 24px */
    --font-size-3xl: 1.875rem;  /* 30px */
    --font-size-4xl: 2.25rem;   /* 36px */
    --font-size-5xl: 3rem;      /* 48px */
    
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* Spacing Scale */
    --space-1: 0.25rem;   /* 4px */
    --space-2: 0.5rem;    /* 8px */
    --space-3: 0.75rem;   /* 12px */
    --space-4: 1rem;      /* 16px */
    --space-5: 1.25rem;   /* 20px */
    --space-6: 1.5rem;    /* 24px */
    --space-8: 2rem;      /* 32px */
    --space-10: 2.5rem;   /* 40px */
    --space-12: 3rem;     /* 48px */
    --space-16: 4rem;     /* 64px */
    --space-20: 5rem;     /* 80px */
    --space-24: 6rem;     /* 96px */
    
    /* Semantic Spacing Aliases */
    --space-xs: var(--space-1);    /* 4px */
    --space-sm: var(--space-2);    /* 8px */
    --space-md: var(--space-4);    /* 16px */
    --space-lg: var(--space-6);    /* 24px */
    --space-xl: var(--space-8);    /* 32px */
    --space-2xl: var(--space-12);  /* 48px */
    --space-3xl: var(--space-16);  /* 64px */
    
    /* Border Radius */
    --radius-sm: 0.375rem;  /* 6px */
    --radius-md: 0.5rem;    /* 8px */
    --radius-lg: 0.75rem;   /* 12px */
    --radius-xl: 1rem;      /* 16px */
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 200ms ease-in-out;
    --transition-slow: 300ms ease-in-out;
    
    /* Layout */
    --max-width-sm: 640px;
    --max-width-md: 768px;
    --max-width-lg: 1024px;
    --max-width-xl: 1280px;
    --max-width-2xl: 1536px;
    --container-max-width: 1200px;
    --header-height: 4rem;
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

*::selection{
    background-color: var(--primary-200);
    color: var(--text-primary);
}

html {
    font-size: 100%;
    line-height: var(--line-height-normal);
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family-sans);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    
}

/* ==========================================================================
   Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

h1 {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
}

h2 {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
}

h3 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
}

h4 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
}

h5 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
}

h6 {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
}

p {
    margin-bottom: var(--space-4);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition-fast);
}

a:hover {
    color: var(--primary-hover);
}

/* ==========================================================================
   Layout Components
   ========================================================================== */

.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

@media (min-width: 640px) {
    .container {
        padding: 0 var(--space-6);
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--space-8);
    }
}

.main-content {
    flex: 1;
    padding: var(--space-8) 0;
}

/* ==========================================================================
   Header & Navigation - Luxury Edition
   ========================================================================== */

.header {
    background: rgba(255, 255, 255, 0.95);
    border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(20px);
    box-shadow: 
        0 1px 3px rgba(0, 0, 0, 0.02),
        0 4px 12px rgba(0, 0, 0, 0.04),
        0 0 0 1px rgba(255, 255, 255, 0.05);
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    padding-bottom: 12px;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(37, 99, 235, 0.01) 0%, 
        rgba(59, 130, 246, 0.005) 50%,
        rgba(14, 165, 233, 0.01) 100%);
    pointer-events: none;
}

.navbar {
    height: var(--header-height); 
    position: relative;
    z-index: 1;
}

.navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 var(--space-lg);
    max-width: 1200px;
    margin: 0 auto;
}

/* Premium Navbar Brand - Luxury Design */
.navbar-brand {
    flex-shrink: 0;
    position: relative;
    display: flex;
    align-items: center;
}

.brand-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.15s ease;
    position: relative;
    padding: 12px 16px;
    border-radius: 0;
    background: transparent;
    border: none;
}

.brand-link:hover {
    background: rgba(15, 23, 42, 0.01);
}

.brand-container {
    display: flex;
    align-items: center;
    position: relative;
}

.brand-logo-wrapper {
    margin-right: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.brand-logo { 
    opacity: 0.95;
    transition: opacity 0.15s ease;
    position: relative;
}

.logo-glow {
    display: none;
}

.brand-link:hover .brand-logo {
    opacity: 1;
}

.brand-text-container {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.brand-text {
    font-family: var(--font-family-sans);
    font-weight: 700;
    font-size: 1.125rem;
    line-height: 1.2;
    color: #0f172a;
    letter-spacing: -0.02em;
    transition: color 0.15s ease;
    margin: 0;
}

.brand-tagline { 
    font-family: 'Segoe Script', cursive, sans-serif !important;
    font-size: 0.6875rem;
    font-weight: 500;
    color: #64748b;
    letter-spacing: 0.025em;
    text-transform: uppercase;
    margin-top: 2px;
    opacity: 0.85;
    transition: all 0.15s ease;
}

.brand-link:hover .brand-text {
    color: #1e293b;
}

.brand-link:hover .brand-tagline {
    color: #475569;
    opacity: 1;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 2.75rem;
    height: 2.75rem;
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(226, 232, 240, 0.6);
    border-radius: 12px;
    cursor: pointer;
    padding: 0;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    backdrop-filter: blur(12px);
}

.mobile-menu-btn:hover {
    background: rgba(37, 99, 235, 0.08);
    border-color: rgba(37, 99, 235, 0.2);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.hamburger {
    width: 1.25rem;
    height: 2px;
    background-color: var(--text-primary);
    margin: 2px 0;
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.mobile-menu-btn:hover .hamburger {
    background-color: var(--primary-600);
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: var(--space-2xl);
}

.navbar-nav {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--space-md);
    background: rgba(255, 255, 255, 0.7);
    border-radius: 16px;
    padding: 8px;
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 
        0 2px 8px rgba(0, 0, 0, 0.02),
        0 4px 16px rgba(0, 0, 0, 0.04);
}

.nav-item {
    position: relative;
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9375rem;
    padding: 10px 16px;
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
    text-decoration: none;
    letter-spacing: -0.01em;
    line-height: 1.4;
    white-space: nowrap;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(37, 99, 235, 0.08) 0%, 
        rgba(29, 78, 216, 0.06) 100%);
    border-radius: 12px;
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.nav-link:hover::before {
    opacity: 1;
    transform: scale(1);
}

.nav-link:hover,
.nav-link:focus {
    color: var(--primary-700);
    text-decoration: none;
    transform: translateY(-1px);
    text-shadow: 0 1px 2px rgba(37, 99, 235, 0.1);
}

.nav-link.active {
    color: var(--primary-700);
    font-weight: 600;
    background: linear-gradient(135deg, 
        rgba(37, 99, 235, 0.12) 0%, 
        rgba(29, 78, 216, 0.08) 100%);
    box-shadow: 
        inset 0 1px 2px rgba(37, 99, 235, 0.1),
        0 2px 4px rgba(37, 99, 235, 0.08);
}

.nav-link.active::before {
    opacity: 0;
}

.navbar-cta {
    margin-left: var(--space-lg);
}

/* Luxury hover effects */
.nav-item::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, 
        var(--primary-600) 0%, 
        var(--primary-700) 100%);
    border-radius: 1px;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    transform: translateX(-50%);
}

.nav-link:hover ~ ::after,
.nav-link.active ~ ::after {
    width: 24px;
}

/* Enhanced mobile button animations */
.mobile-menu-btn.active .hamburger:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

.mobile-menu-btn.active .hamburger:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active .hamburger:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

/* Mobile Navigation - Luxury Edition */
@media (max-width: 768px) {
    .navbar-content {
        padding: 0 var(--space-md);
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .navbar-nav {
        background: none;
        border: none;
        box-shadow: none;
        backdrop-filter: none;
        border-radius: 0;
        padding: 0;
        flex-direction: column;
        gap: var(--space-md);
        width: 100%;
    }
    
    .navbar-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        border-bottom: 1px solid rgba(226, 232, 240, 0.6);
        border-top: 1px solid rgba(226, 232, 240, 0.6);
        flex-direction: column;
        padding: var(--space-8) var(--space-6);
        gap: 0;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        box-shadow: 
            0 8px 25px rgba(0, 0, 0, 0.08),
            0 16px 40px rgba(0, 0, 0, 0.04);
    }
    
    .navbar-menu::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(135deg, 
            rgba(37, 99, 235, 0.02) 0%, 
            rgba(59, 130, 246, 0.01) 50%,
            rgba(14, 165, 233, 0.02) 100%);
        pointer-events: none;
    }
    
    .navbar-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-item {
        width: 100%;
        position: relative;
        z-index: 1;
    }
    
    .nav-link {
        padding: 16px 20px;
        display: block;
        border-radius: 14px;
        text-align: left;
        font-size: 1rem;
        font-weight: 500;
        background: rgba(255, 255, 255, 0.7);
        border: 1px solid rgba(255, 255, 255, 0.3);
        margin-bottom: var(--space-3);
        backdrop-filter: blur(12px);
        box-shadow: 
            0 2px 8px rgba(0, 0, 0, 0.02),
            0 4px 16px rgba(0, 0, 0, 0.03);
        transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }
    
    .nav-link::before {
        display: none;
    }
    
    .nav-link:hover,
    .nav-link:focus {
        background: rgba(37, 99, 235, 0.08);
        border-color: rgba(37, 99, 235, 0.2);
        transform: translateY(-2px);
        box-shadow: 
            0 4px 12px rgba(37, 99, 235, 0.1),
            0 8px 24px rgba(0, 0, 0, 0.06);
    }
    
    .nav-link.active {
        background: linear-gradient(135deg, 
            rgba(37, 99, 235, 0.15) 0%, 
            rgba(59, 130, 246, 0.1) 100%);
        border-color: rgba(37, 99, 235, 0.3);
        color: var(--primary-700);
        font-weight: 600;
        box-shadow: 
            inset 0 1px 2px rgba(37, 99, 235, 0.1),
            0 4px 16px rgba(37, 99, 235, 0.15);
    }
    
    .nav-item::after {
        display: none;
    }
    
    .navbar-cta {
        margin-left: 0;
        margin-top: var(--space-md);
        padding-top: var(--space-md);
        border-top: 1px solid rgba(226, 232, 240, 0.6);
    }
}

@media (max-width: 480px) {
    .navbar-content {
        padding: 0 var(--space-sm);
    }
    
    .navbar-brand {
        margin-right: var(--space-lg);
    }
    
    .brand-link {
        padding: 0.5rem 0.875rem;
        border-radius: 16px;
    }
    
    .brand-logo-wrapper {
        margin-right: 0.75rem;
    }
     
    .brand-text {
        font-size: 1.25rem;
    }
    
    .brand-tagline {
        font-size: 0.6rem;
        letter-spacing: 0.04em;
    }
    
    .brand-link:hover {
        transform: translateY(-2px) scale(1.015);
    }
    
    .brand-link::after {
        animation-duration: 10s;
    }
}

/* Legacy header styles (for compatibility) */
.site-header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(8px);
    background: rgba(255, 255, 255, 0.95);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

.site-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    text-decoration: none;
}

.logo-icon {
    width: 32px;
    height: 32px;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    list-style: none;
}

.nav-link {
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
    background: var(--primary-light);
}

/* Mobile Navigation */
.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-nav-toggle {
        display: block;
    }
}

/* ==========================================================================
   Button Components
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    line-height: 1.25;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition-fast);
    min-height: 2.75rem;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Button Variants */
.btn-primary {
    background: var(--primary);
    color: var(--text-inverse);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
    box-shadow: var(--shadow-md);
    color: var(--text-inverse);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-secondary);
    color: var(--text-muted);
    border-color: var(--text-secondary);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover:not(:disabled) {
    background: var(--primary);
    color: var(--text-inverse);
}

/* Button Sizes */
.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
    min-height: 2.25rem;
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-lg);
    min-height: 3.25rem;
}

.btn-xl {
    padding: var(--space-5) var(--space-10);
    font-size: var(--font-size-xl);
    min-height: 3.75rem;
}

/* Buttons responsive */
@media (max-width: 768px) {
    .btn {
        min-height: 2.75rem;
        padding: var(--space-3) var(--space-6);
    }
    
    .btn-sm {
        min-height: 2.25rem;
        padding: var(--space-2) var(--space-4);
    }
    
    .btn-lg {
        min-height: 3rem;
        padding: var(--space-3) var(--space-6);
    }
    
    .btn-xl {
        min-height: 3.25rem;
        padding: var(--space-4) var(--space-8);
    }
}

@media (max-width: 480px) {
    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* ==========================================================================
   Card Components
   ========================================================================== */

.card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-header {
    margin-bottom: var(--space-6);
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.card-description {
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
}

.card-content {
    margin-bottom: var(--space-6);
}

.card-footer {
    border-top: 1px solid var(--border-color);
    padding-top: var(--space-4);
    margin-top: var(--space-6);
}

/* ==========================================================================
   Form Components
   ========================================================================== */

.form-group {
    margin-bottom: var(--space-6);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.form-label.required::after {
    content: ' *';
    color: var(--error-500);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--space-3);
    font-size: var(--font-size-base);
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 5rem;
}

.form-error {
    color: var(--error-500);
    font-size: var(--font-size-sm);
    margin-top: var(--space-1);
}

/* Checkbox and Radio */
.form-checkbox,
.form-radio {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
}

.form-checkbox input,
.form-radio input {
    margin-top: 0.125rem;
    accent-color: var(--primary);
}

.form-checkbox-label,
.form-radio-label {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
    cursor: pointer;
}

/* Forms responsive */
@media (max-width: 768px) {
    .form-input,
    .form-textarea,
    .form-select {
        padding: var(--space-3) var(--space-md);
        font-size: var(--font-size-base);
    }
    
    .form-group {
        margin-bottom: var(--space-5);
    }
}

@media (max-width: 480px) {
    .form-input,
    .form-textarea,
    .form-select {
        padding: var(--space-2) var(--space-md);
    }
    
    .form-textarea {
        min-height: 4rem;
    }
    
    .form-checkbox,
    .form-radio {
        gap: var(--space-2);
    }
}

/* ==========================================================================
   Homepage Components
   ========================================================================== */

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    padding: var(--space-3xl) 0;
    margin-bottom: var(--space-3xl);
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
    min-height: 10vh;
    max-width: var(--container-max-width);
    margin: 0 auto;
}

.hero-text {
    padding-right: var(--space-lg);
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: var(--text-primary); /* Fallback for browsers that don't support background-clip */
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    margin-bottom: var(--space-2xl);
    line-height: var(--line-height-relaxed);
    max-width: 90%;
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    align-items: center;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    width: 100%;
    height: auto;
    max-width: 500px;
    border-radius: var(--radius-lg);
}

/* Responsive Hero Section */
@media (max-width: 1024px) {
    .hero-content {
        gap: var(--space-2xl);
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .hero-section {
        padding: var(--space-2xl) 0;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-2xl);
        min-height: auto;
    }
    
    .hero-text {
        padding-right: 0;
        order: 1;
    }
    
    .hero-image {
        order: 2;
        margin-top: var(--space-lg);
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
        margin-bottom: var(--space-md);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
        margin-bottom: var(--space-lg);
    }
    
    .hero-actions {
        justify-content: center;
        gap: var(--space-sm);
    }
    
    .hero-actions .btn {
        flex: 1;
        max-width: 200px;
        min-width: 150px;
    }
}

@media (max-width: 480px) {
    .hero-section {
        padding: var(--space-xl) 0;
    }
    
    .hero-content {
        gap: var(--space-lg);
    }
    
    .hero-title {
        font-size: var(--font-size-2xl);
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-actions .btn {
        width: 100%;
        max-width: none;
        padding: var(--space-md) var(--space-lg);
    }
}

/* Stats Section */
.stats-section {
    padding: var(--space-2xl) 0;
    background-color: var(--bg-secondary);
    margin-bottom: var(--space-3xl);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-xl);
}

.stat-card {
    text-align: center;
    padding: var(--space-lg);
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--primary);
    margin-bottom: var(--space-sm);
    line-height: 1;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    font-weight: 500;
}

/* Stats responsive */
@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-lg);
    }
    
    .stat-number {
        font-size: var(--font-size-3xl);
    }
}

@media (max-width: 480px) {
    .stats-section {
        padding: var(--space-xl) 0;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .stat-card {
        padding: var(--space-md);
    }
    
    .stat-number {
        font-size: var(--font-size-2xl);
    }
}

/* Features Section */
.features-section {
    padding: var(--space-3xl) 0;
    margin-bottom: var(--space-3xl);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.section-header h2 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-md);
}

.section-header p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
}

/* Section header responsive */
@media (max-width: 768px) {
    .section-header {
        margin-bottom: var(--space-2xl);
    }
    
    .section-header h2 {
        font-size: var(--font-size-2xl);
    }
    
    .section-header p {
        font-size: var(--font-size-base);
    }
}

@media (max-width: 480px) {
    .section-header h2 {
        font-size: var(--font-size-xl);
    }
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-2xl);
}

.feature-card {
    padding: var(--space-2xl);
    border-radius: var(--radius-lg);
    background-color: var(--bg-primary);
    border: 1px solid var(--border);
    transition: all var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 3rem;
    height: 3rem;
    background-color: var(--primary);
    color: white;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
}

.feature-icon svg {
    width: 1.5rem;
    height: 1.5rem;
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-md);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: var(--space-3xl) 0;
    margin-bottom: var(--space-3xl);
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    color: white;
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-md);
    line-height: 1.2;
}

.cta-content p {
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-2xl);
    line-height: var(--line-height-relaxed);
}

.cta-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* CTA responsive */
@media (max-width: 768px) {
    .cta-section {
        padding: var(--space-2xl) 0;
    }
    
    .cta-content h2 {
        font-size: var(--font-size-2xl);
    }
    
    .cta-content p {
        font-size: var(--font-size-base);
        margin-bottom: var(--space-lg);
    }
}

@media (max-width: 480px) {
    .cta-content h2 {
        font-size: var(--font-size-xl);
    }
    
    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-actions .btn {
        width: 100%;
        max-width: 280px;
    }
}

/* Features responsive */
@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

@media (max-width: 480px) {
    .features-section {
        padding: var(--space-2xl) 0;
    }
    
    .feature-card {
        padding: var(--space-lg);
    }
}

/* Team Section */

.cta-note {
    color: rgba(255, 255, 255, 0.8);
}

/* Blog Preview Section */
.blog-preview-section {
    padding: var(--space-3xl) 0;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.blog-card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.blog-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.blog-image {
    aspect-ratio: 16/9;
    overflow: hidden;
}

.blog-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.blog-content {
    padding: var(--space-lg);
}

.blog-title {
    margin-bottom: var(--space-sm);
}

.blog-title a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.blog-title a:hover {
    color: var(--primary);
}

.blog-excerpt {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    line-height: var(--line-height-relaxed);
}

.blog-meta {
    display: flex;
    justify-content: space-between;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* ==========================================================================
   Legacy Hero Styles (keep for compatibility)
   ========================================================================== */

.hero {
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--bg-primary) 100%);
    padding: var(--space-20) 0;
    text-align: center;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-6);
    line-height: var(--line-height-tight);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    margin-bottom: var(--space-8);
    line-height: var(--line-height-relaxed);
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .hero {
        padding: var(--space-16) 0;
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
}

/* ==========================================================================
   Feature Grid
   ========================================================================== */

.features {
    padding: var(--space-20) 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-8);
    margin-top: var(--space-12);
}

.feature-card {
    text-align: center;
    padding: var(--space-8);
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.feature-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.feature-icon {
    width: 4rem;
    height: 4rem;
    background: var(--primary);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-4);
    font-size: var(--font-size-2xl);
    color: var(--text-inverse);
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-3);
}

.feature-description {
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
}

/* ==========================================================================
   Footer
   ========================================================================== */

/* ========================================================================== 
   Premium Footer Design - White Theme
   ========================================================================== */

.footer {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    position: relative;
    margin-top: auto;
    overflow: hidden;
    border-top: 1px solid #e2e8f0;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.2), transparent);
}

.footer-main {
    padding: 4rem 0 3rem;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    align-items: start;
    max-width: 1200px;
    margin: 0 auto;
}

/* Brand Section */
.footer-brand {
    padding-right: 2rem;
    min-height: 200px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 1.5rem;
}
.footer-logo:hover {
    scale: 1.10;
    transition: all 0.3s ease;
    opacity: 1;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.1);
    transform: translateY(-2px);
    border-radius: 16px;  
}

.footer-logo-img {
    width: 64px;
    height: 64px;
    opacity: 0.9;
}

.footer-brand-text {
    display: flex;
    flex-direction: column;
}

.footer-brand-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1e293b;
    margin: 0;
    letter-spacing: -0.025em;
}

.footer-brand-tagline {
    font-size: 0.75rem;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
    margin-top: 2px;
}

.footer-mission {
    color: #475569;
    line-height: 1.6;
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

.footer-social {
    display: flex;
    gap: 0.75rem;
}

.footer-social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    color: #64748b;
    transition: all 0.2s ease;
    text-decoration: none;
}

.footer-social-link:hover {
    background: #3b82f6;
    border-color: #3b82f6;
    color: #ffffff;
    transform: translateY(-1px);
}

.footer-social-link svg {
    width: 18px;
    height: 18px;
}

/* Links Grid */
.footer-links-grid {
    display: contents;
}

.footer-column {
    min-height: 160px;
}

.footer-column-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-nav {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-nav li {
    margin-bottom: 0.75rem;
}

.footer-nav a {
    color: #64748b;
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    position: relative;
}

.footer-nav a:hover {
    color: #3b82f6;
    padding-left: 4px;
} 
.newsletter-section { 
    padding: 0 0 3rem 0;
    position: relative;
    margin-top: 4rem;
}

.newsletter-section::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 2px;
    background: linear-gradient(90deg, transparent, #3b82f6, transparent);
    border-radius: 1px;
}

.newsletter-container {
    background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    max-width: 800px;
    margin: 0 auto;
    box-shadow: 
        0 4px 6px rgba(0, 0, 0, 0.05),
        0 1px 3px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    position: relative;
}

.newsletter-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #3b82f6, #6366f1, #8b5cf6);
}

.newsletter-content {
    padding: 2.5rem;
    text-align: center;
}

/* Newsletter Text Content */
.newsletter-text {
    margin-bottom: 2rem;
}

.newsletter-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1rem;
    line-height: 1.2;
    letter-spacing: -0.025em;
}

.newsletter-description {
    color: #64748b;
    font-size: 1rem;
    line-height: 1.6;
    margin: 0;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.newsletter-description strong {
    color: #3b82f6;
    font-weight: 600;
}

.footer-newsletter-form {
    width: 100%;
}

/* Newsletter Form */
.newsletter-form {
    max-width: 450px;
    margin: 0 auto;
}

.newsletter-form-group {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
    align-items: stretch;
}

.newsletter-input {
    flex: 1;
    padding: 0.875rem 1rem;
    background: #ffffff;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    color: #1e293b;
    font-size: 0.95rem;
    transition: all 0.2s ease;
    box-sizing: border-box;
    min-width: 0;
}

.newsletter-input::placeholder {
    color: #94a3b8;
}

.newsletter-input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.newsletter-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: #ffffff;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    box-sizing: border-box;
    flex-shrink: 0;
    white-space: nowrap;
}

.newsletter-btn:hover {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.newsletter-btn:active {
    transform: translateY(0);
}

.btn-arrow {
    width: 16px;
    height: 16px;
    transition: transform 0.2s ease;
}

.newsletter-btn:hover .btn-arrow {
    transform: translateX(2px);
}

.newsletter-privacy {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: #64748b;
    font-size: 0.85rem;
    margin: 0;
    font-weight: 500;
}

.privacy-icon {
    width: 14px;
    height: 14px;
    color: #22c55e;
    flex-shrink: 0;
}

.newsletter-messages {
    margin-bottom: 1rem;
    padding: 0.75rem;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    text-align: center;
    display: none;
}

.newsletter-messages.success {
    background: #f0fdf4;
    color: #15803d;
    border: 1px solid #bbf7d0;
}

.newsletter-messages.error {
    background: #fef2f2;
    color: #dc2626;
    border: 1px solid #fecaca;
}

.newsletter-messages.loading {
    background: #f0f9ff;
    color: #0369a1;
    border: 1px solid #bae6fd;
}

.footer-newsletter-btn .btn-icon svg {
    width: 14px;
    height: 14px;
}

/* Newsletter Responsive Design */
@media (max-width: 1024px) {
    .newsletter-content {
        padding: 2rem 1.5rem;
    }
    
    .newsletter-title {
        font-size: 1.5rem;
    }
    
    .newsletter-form {
        max-width: 400px;
    }
}

@media (max-width: 768px) {
    .newsletter-section {
        margin-bottom: 3rem;
        padding-bottom: 2rem;
    }
    
    .newsletter-container {
        margin: 0 1rem;
        border-radius: 12px;
    }
    
    .newsletter-content {
        padding: 2rem 1.25rem;
    }
    
    .newsletter-title {
        font-size: 1.375rem;
        margin-bottom: 0.75rem;
    }
    
    .newsletter-description {
        font-size: 0.9rem;
        margin-bottom: 1.5rem;
    }
    
    .newsletter-form {
        max-width: none;
    }
    
    .newsletter-form-group {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .newsletter-input {
        padding: 1rem;
        text-align: center;
        font-size: 1rem;
    }
    
    .newsletter-btn {
        width: 100%;
        padding: 1rem 1.5rem;
        justify-content: center;
        font-size: 1rem;
    }
    
    .newsletter-privacy {
        font-size: 0.8rem;
        margin-top: 0.5rem;
    }
}

@media (max-width: 480px) {
    .newsletter-content {
        padding: 1.5rem 1rem;
    }
    
    .newsletter-title {
        font-size: 1.25rem;
    }
    
    .newsletter-description {
        font-size: 0.875rem;
    }
}

.footer-newsletter-messages {
    padding: 0.5rem;
    border-radius: 6px;
    margin-bottom: 0.75rem;
    font-size: 0.8rem;
    text-align: center;
    display: none;
}

.footer-newsletter-messages.success {
    background: rgba(34, 197, 94, 0.1);
    color: #22c55e;
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.footer-newsletter-messages.error {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.footer-newsletter-messages.loading {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

/* Footer Bottom */
.footer-bottom {
    border-top: 1px solid #e2e8f0;
    padding: 1.5rem 0;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-bottom-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-copyright {
    color: #64748b;
    font-size: 0.875rem;
    margin: 0;
}

.footer-version {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
    font-family: monospace;
}

.footer-bottom-right {
    text-align: right;
}

.footer-tagline {
    color: #64748b;
    font-size: 0.875rem;
    margin: 0;
    font-style: italic;
}

/* Smooth Blinking Animation for HOW OWN LAB */
.blink-word {
    display: inline-block;
    position: relative;
    animation: smoothBlink 3s infinite ease-in-out;
    animation-delay: calc(var(--delay) * 1s);
}

.blink-word[data-delay="0"] {
    --delay: 0;
}

.blink-word[data-delay="1"] {
    --delay: 1;
}

.blink-word[data-delay="2"] {
    --delay: 2;
}

@keyframes smoothBlink {
    0%, 20% {
        opacity: 1;
        color: #3b82f6;
        text-shadow: 0 0 8px rgba(59, 130, 246, 0.4);
        transform: scale(1);
    }
    
    25%, 30% {
        opacity: 0.3;
        color: #1e293b;
        text-shadow: none;
        transform: scale(0.98);
    }
    
    35%, 80% {
        opacity: 1;
        color: #64748b;
        text-shadow: none;
        transform: scale(1);
    }
    
    85%, 100% {
        opacity: 1;
        color: #64748b;
        text-shadow: none;
        transform: scale(1);
    }
}

/* Enhanced Responsive Design */
/* Responsive Design - Fixed */
@media (max-width: 1200px) {
    .footer-main {
        grid-template-columns: 1.5fr 1fr 1fr 1fr;
        gap: 2rem;
    }
}

@media (max-width: 1024px) {
    .footer-main {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
        padding: 3rem 0 2rem;
    }
    
    .footer-brand {
        grid-column: 1 / -1;
        padding-right: 0;
        text-align: center;
        margin-bottom: 2rem;
    }
    
    .footer-logo {
        justify-content: center;
    }
    
    .footer-mission {
        text-align: center;
        max-width: 600px;
        margin: 0 auto 1.5rem;
    }
    
    .footer-social {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .footer-newsletter-section {
        margin-bottom: 3rem;
        padding-bottom: 2rem;
    }
    
    .footer-newsletter {
        border-radius: 20px;
        margin: 0 1rem;
    }
    
    .footer-newsletter-content {
        padding: 2.5rem 1.5rem;
    }
    
    .footer-newsletter-badge {
        font-size: 0.7rem;
        padding: 0.4rem 0.8rem;
        margin-bottom: 1.5rem;
    }
    
    .newsletter-badge-icon {
        width: 12px;
        height: 12px;
    }
    
    .footer-newsletter-title {
        font-size: 1.5rem;
        margin-bottom: 0.75rem;
    }
    
    .footer-newsletter-desc {
        font-size: 1rem;
        margin-bottom: 2rem;
    }
    
    .footer-newsletter-input-wrapper {
        margin-bottom: 1.5rem;
    }
    
    .footer-newsletter-input-group {
        flex-direction: column;
        padding: 4px;
        gap: 0;
    }
    
    .input-icon {
        display: none;
    }
    
    .footer-newsletter-input {
        padding: 1.25rem 1rem;
        text-align: center;
        border-radius: 12px;
        margin-bottom: 6px;
    }
    
    .footer-newsletter-btn {
        width: 100%;
        min-width: auto;
        justify-content: center;
        border-radius: 12px;
    }
    
    .footer-newsletter-features {
        gap: 1.5rem;
        flex-direction: column;
        align-items: center;
    }
    
    .feature-item {
        font-size: 0.8rem;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: 2.5rem;
        padding: 3rem 0 2rem;
        max-width: none;
    }
    
    .footer-brand {
        text-align: center;
        margin-bottom: 2rem;
        min-height: auto;
        padding-right: 0;
    }
    
    .footer-column {
        min-height: auto;
        text-align: center;
    }
    
    .footer-column-title {
        text-align: center;
        margin-bottom: 1rem;
    }
    
    .footer-nav {
        text-align: center;
    }
    
    .footer-nav li {
        margin-bottom: 0.5rem;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .footer-bottom-left {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .footer-bottom-right {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .footer-main {
        padding: 2rem 0 1rem;
        gap: 2rem;
    }
    
    .footer-brand {
        margin-bottom: 1.5rem;
    }
    
    .footer-newsletter {
        padding: 1.25rem;
        border-radius: 12px;
    }
    
    .footer-newsletter-title {
        font-size: 0.95rem;
    }
    
    .footer-newsletter-desc {
        font-size: 0.8rem;
        margin-bottom: 1.25rem;
    }
    
    .footer-newsletter-input {
        padding: 0.75rem;
        font-size: 0.8rem;
    }
    
    .footer-newsletter-btn {
        padding: 0.75rem 1rem;
        font-size: 0.8rem;
    }
    
    .footer-logo-img {
        width: 48px;
        height: 48px;
    }
    
    .footer-brand-title {
        font-size: 1.1rem;
    }
    
    .footer-mission {
        font-size: 0.875rem;
    }
}

.copyright,
.footer-note {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    margin: 0;
}

@media (max-width: 640px) {
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }
}

/* ==========================================================================
   Text & Display Utility Classes
   ========================================================================== */

/* Text Alignment */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Text Colors */
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }

/* Font Weights */
.font-bold { font-weight: var(--font-weight-bold); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-medium { font-weight: var(--font-weight-medium); }

/* Display */
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }

/* Flexbox */
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

/* Width */
.w-full { width: 100%; }
.max-w-sm { max-width: 640px; }
.max-w-md { max-width: 768px; }
.max-w-lg { max-width: 1024px; }
.max-w-xl { max-width: 1280px; }

/* Border radius */
.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-full { border-radius: var(--radius-full); }

/* Shadow */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* Background */
.bg-primary { background-color: var(--bg-primary); }
.bg-secondary { background-color: var(--bg-secondary); }

/* Screen Reader Only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.focus\:not-sr-only:focus {
    position: static;
    width: auto;
    height: auto;
    padding: initial;
    margin: initial;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/* Legacy footer styles (for compatibility) */
.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--space-12) 0 var(--space-8);
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.footer-section h4 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--space-2);
}

.footer-links a {
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: var(--space-6);
    text-align: center;
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

/* Spacing */
.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.p-1 { padding: var(--space-1); }
.p-2 { padding: var(--space-2); }
.p-3 { padding: var(--space-3); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 640px) {
    :root {
        --space-20: var(--space-16);
        --space-24: var(--space-20);
    }
    
    .container {
        padding: 0 var(--space-4);
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .hero-actions .btn {
        width: auto;
        min-width: 200px;
    }
}

/* ==========================================================================
   Footer Newsletter Styles
   ========================================================================== */

.footer-newsletter {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.footer-newsletter h5 {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-newsletter p {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.footer-newsletter-form {
    display: flex;
    gap: 0.5rem;
    align-items: flex-start;
}

.footer-email-input {
    flex: 1;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition-fast);
}

.footer-email-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.1);
}

.footer-newsletter-btn {
    padding: 0.5rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 2.5rem;
    height: 2.5rem;
}

.footer-newsletter-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.footer-newsletter-btn:active {
    transform: translateY(0);
}

.footer-newsletter-btn svg {
    width: 1rem;
    height: 1rem;
}

.footer-newsletter-messages {
    font-size: var(--font-size-xs);
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
    text-align: center;
}

.footer-newsletter-messages.success {
    background-color: var(--success-50);
    color: var(--success-600);
    border: 1px solid var(--success);
}

.footer-newsletter-messages.error {
    background-color: var(--error-50);
    color: var(--error-600);
    border: 1px solid var(--error);
}

.footer-newsletter-messages.loading {
    background-color: var(--primary-light);
    color: var(--primary);
    border: 1px solid var(--primary);
}

/* Responsive Footer Newsletter */
@media (max-width: 768px) {
    .footer-newsletter-form {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .footer-newsletter-btn {
        align-self: stretch;
        height: 2.25rem;
    }
}

/* ==========================================================================
   Blog Detail Page Styles
   ========================================================================== */

.blog-detail {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-8) var(--space-4);
}

.blog-header {
    margin-bottom: var(--space-8);
    text-align: center;
}

.blog-header h1 {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-4);
    line-height: var(--line-height-tight);
}

.blog-meta {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.blog-meta .separator {
    width: 4px;
    height: 4px;
    background: var(--text-muted);
    border-radius: 50%;
}

.blog-category {
    background: var(--primary-light);
    color: var(--primary);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Category-specific colors */
.post-category {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-decoration: none;
}

.post-category.category-learning-tips {
    background: #ecfdf5;
    color: #059669;
}

.post-category.category-debugging {
    background: #fef2f2;
    color: #dc2626;
}

.post-category.category-confidence-building {
    background: #fffbeb;
    color: #d97706;
}

.post-category.category-career-advice {
    background: #eef2ff;
    color: #4338ca;
}

.post-category.category-project-ideas {
    background: #f3e8ff;
    color: #7c3aed;
}

.post-category.category-industry-insights {
    background: #ecfdf5;
    color: #059669;
}

/* Default category style */
.post-category.category-tech,
.post-category.category-technology {
    background: var(--primary-light);
    color: var(--primary);
}

.blog-content {
    line-height: var(--line-height-relaxed);
    color: var(--text-primary);
}

.blog-content h2,
.blog-content h3,
.blog-content h4 {
    margin-top: var(--space-8);
    margin-bottom: var(--space-4);
}

.blog-content p {
    margin-bottom: var(--space-6);
}

.blog-content ul,
.blog-content ol {
    margin-bottom: var(--space-6);
    padding-left: var(--space-6);
}

.blog-content li {
    margin-bottom: var(--space-2);
}

.blog-content blockquote {
    border-left: 4px solid var(--primary);
    background: var(--bg-secondary);
    padding: var(--space-4) var(--space-6);
    margin: var(--space-6) 0;
    font-style: italic;
    color: var(--text-secondary);
}

.blog-content code {
    background: var(--bg-secondary);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    font-family: var(--font-family-mono);
    font-size: 0.875em;
    color: var(--primary);
}

.blog-content pre {
    background: var(--gray-900);
    color: var(--gray-100);
    padding: var(--space-4);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: var(--space-6) 0;
}

.blog-content pre code {
    background: none;
    padding: 0;
    color: inherit;
}

.blog-actions {
    margin-top: var(--space-8);
    padding-top: var(--space-8);
    border-top: 1px solid var(--border);
    text-align: center;
}

.related-posts {
    margin-top: var(--space-12);
    padding-top: var(--space-8);
    border-top: 1px solid var(--border);
}

.related-posts h3 {
    text-align: center;
    margin-bottom: var(--space-8);
}

.related-posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-6);
}

.related-post-card {
    background: var(--bg-secondary);
    padding: var(--space-6);
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
}

.related-post-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.related-post-card h4 {
    margin-bottom: var(--space-2);
    font-size: var(--font-size-lg);
}

.related-post-card h4 a {
    color: var(--text-primary);
    text-decoration: none;
}

.related-post-card h4 a:hover {
    color: var(--primary);
}

.related-post-card p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-3);
}

.related-post-meta {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* Blog Detail Responsive */
@media (max-width: 768px) {
    .blog-detail {
        padding: var(--space-6) var(--space-4);
    }
    
    .blog-header h1 {
        font-size: var(--font-size-3xl);
    }
    
    .blog-meta {
        flex-direction: column;
        gap: var(--space-2);
    }
    
    .blog-meta .separator {
        display: none;
    }
    
    .related-posts-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   Admin Interface Styles
   ========================================================================== */

.admin-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-8) var(--space-4);
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-8);
    padding-bottom: var(--space-6);
    border-bottom: 1px solid var(--border);
}

.admin-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    margin: 0;
}

.admin-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

.stat-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    text-align: center;
}

.stat-value {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--primary);
    margin-bottom: var(--space-2);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.admin-filters {
    background: var(--bg-secondary);
    padding: var(--space-6);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-8);
}

.filters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
    align-items: end;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.filter-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.filter-input {
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    background: var(--bg-primary);
}

.admin-table {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: var(--space-8);
}

.admin-table table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table th {
    background: var(--bg-secondary);
    padding: var(--space-4);
    text-align: left;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    border-bottom: 1px solid var(--border);
    font-size: var(--font-size-sm);
}

.admin-table td {
    padding: var(--space-4);
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.admin-table tr:hover {
    background: var(--bg-secondary);
}

.admin-table tr:last-child td {
    border-bottom: none;
}

.status-badge {
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.status-badge.published {
    background: var(--success-50);
    color: var(--success-600);
}

.status-badge.draft {
    background: var(--warning-50);
    color: var(--warning-600);
}

.action-buttons {
    display: flex;
    gap: var(--space-2);
}

.btn-icon {
    padding: var(--space-2);
    border: none;
    background: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.btn-icon:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.btn-icon.edit:hover {
    color: var(--primary);
}

.btn-icon.delete:hover {
    color: var(--error);
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-2);
    margin-top: var(--space-8);
}

.pagination-btn {
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--border);
    background: var(--bg-primary);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    transition: var(--transition-fast);
}

.pagination-btn:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.pagination-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

.modal.active .modal-content {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--border);
}

.modal-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.modal-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
    margin-top: var(--space-6);
    padding-top: var(--space-6);
    border-top: 1px solid var(--border);
}

/* Admin Responsive */
@media (max-width: 768px) {
    .admin-container {
        padding: var(--space-6) var(--space-3);
    }
    
    .admin-header {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-4);
    }
    
    .admin-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-4);
    }
    
    .filters-grid {
        grid-template-columns: 1fr;
        gap: var(--space-3);
    }
    
    .admin-table {
        overflow-x: auto;
    }
    
    .action-buttons {
        flex-direction: column;
        gap: var(--space-1);
    }
    
    .modal-content {
        padding: var(--space-6);
        margin: var(--space-4);
    }
    
    .modal-actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .admin-stats {
        grid-template-columns: 1fr;
    }
    
    .pagination {
        flex-wrap: wrap;
    }
}

/* ==========================================================================
   Print Styles (for future use)
   ========================================================================== */

@media print {
    .btn,
    .header,
    .footer {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        color: black;
        background: white;
    }
}

/* ===== UX Enhanced Blog Detail Styles ===== */

/* Reading Progress Bar */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: rgba(99, 102, 241, 0.1);
    z-index: 1000;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #6366f1, #8b5cf6);
    width: 0%;
    transition: width 0.1s ease-out;
}

/* Blog Header Enhanced */
.blog-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 0 2rem;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.blog-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -25%;
    width: 100%;
    height: 200%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="10" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
    transform: rotate(15deg);
}

.blog-header .container {
    position: relative;
    z-index: 2;
}

.category-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.category-tag svg {
    width: 16px;
    height: 16px;
}

.blog-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.1;
    margin: 1rem 0 1.5rem;
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.blog-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.9);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.meta-item svg {
    width: 18px;
    height: 18px;
    color: rgba(255, 255, 255, 0.8);
}

.blog-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.share-btn {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 0.75rem 1.5rem;
    border-radius: 0.75rem;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.share-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.share-btn svg {
    width: 18px;
    height: 18px;
}

/* Enhanced Content Area */
.blog-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1rem;
    line-height: 1.7;
    font-size: 1.1rem;
    color: #374151;
}

.blog-content h2,
.blog-content h3,
.blog-content h4 {
    color: #1f2937;
    margin: 2rem 0 1rem;
    font-weight: 700;
}

.blog-content h2 {
    font-size: 1.75rem;
    border-bottom: 2px solid #e5e7eb;
    padding-bottom: 0.5rem;
}

.blog-content h3 {
    font-size: 1.5rem;
}

.blog-content h4 {
    font-size: 1.25rem;
}

.blog-content p {
    margin-bottom: 1.5rem;
}

.blog-content blockquote {
    border-left: 4px solid #6366f1;
    padding: 1rem 1.5rem;
    margin: 2rem 0;
    background: #f8fafc;
    font-style: italic;
    color: #4b5563;
}

.blog-content code {
    background: #f1f5f9;
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    font-family: 'Monaco', 'Consolas', monospace;
    color: #e11d48;
    font-size: 0.9em;
}

.blog-content pre {
    background: #1e293b;
    color: #e2e8f0;
    padding: 1.5rem;
    border-radius: 0.75rem;
    overflow-x: auto;
    margin: 2rem 0;
    border: 1px solid #334155;
}

.blog-content pre code {
    background: none;
    color: inherit;
    padding: 0;
    border-radius: 0;
}

.blog-content ul,
.blog-content ol {
    margin: 1.5rem 0;
    padding-left: 2rem;
}

.blog-content li {
    margin-bottom: 0.75rem;
}

/* Engagement Section */
.blog-engagement {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: 3rem 0;
    margin: 3rem 0;
    border-radius: 1rem;
    text-align: center;
}

.engagement-actions {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.engagement-btn {
    background: white;
    color: #374151;
    border: 2px solid #e5e7eb;
    padding: 1rem 2rem;
    border-radius: 0.75rem;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    cursor: pointer;
}

.engagement-btn:hover {
    border-color: #6366f1;
    color: #6366f1;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.15);
}

.engagement-btn.liked {
    background: #fee2e2;
    border-color: #ef4444;
    color: #ef4444;
}

.engagement-btn svg {
    width: 20px;
    height: 20px;
}

.skills-section {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    border: 2px solid #e5e7eb;
    margin-top: 2rem;
}

.skills-section h3 {
    color: #1f2937;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.skills-section svg {
    width: 24px;
    height: 24px;
    color: #6366f1;
}

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.skill-tag {
    background: #f1f5f9;
    color: #475569;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid #e2e8f0;
}

/* Related Posts Enhanced */
.related-posts {
    background: #f8fafc;
    padding: 4rem 0;
    margin-top: 4rem;
}

.related-posts h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    color: #1f2937;
    margin-bottom: 3rem;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.related-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid #e5e7eb;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.related-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #6366f1, #8b5cf6);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.related-card:hover::before {
    transform: scaleX(1);
}

.related-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 35px rgba(99, 102, 241, 0.15);
    border-color: #c7d2fe;
}

.card-category {
    margin-bottom: 1rem;
}

.mini-category-tag {
    background: #f1f5f9;
    color: #475569;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.related-card h3 {
    margin-bottom: 1rem;
    font-size: 1.375rem;
    font-weight: 700;
    line-height: 1.3;
}

.related-card h3 a {
    color: #1f2937;
    text-decoration: none;
    transition: color 0.3s ease;
}

.related-card:hover h3 a {
    color: #6366f1;
}

.related-card p {
    color: #6b7280;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    color: #9ca3af;
    margin-bottom: 1rem;
}

.card-arrow {
    position: absolute;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 24px;
    height: 24px;
    color: #d1d5db;
    transition: all 0.3s ease;
}

.related-card:hover .card-arrow {
    color: #6366f1;
    transform: translateX(4px);
}

/* Newsletter CTA */
.newsletter-cta-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 4rem 0;
    color: white;
}

.newsletter-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1000px;
    margin: 0 auto;
    gap: 2rem;
}

.cta-icon {
    background: rgba(255, 255, 255, 0.15);
    padding: 1.5rem;
    border-radius: 1rem;
    backdrop-filter: blur(10px);
}

.cta-icon svg {
    width: 48px;
    height: 48px;
    color: white;
}

.cta-text {
    flex: 1;
}

.cta-text h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.cta-text p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
}

.btn-primary {
    background: white;
    color: #6366f1;
    padding: 1rem 2rem;
    border-radius: 0.75rem;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.25);
}

/* Responsive Design for Blog Enhanced */
@media (max-width: 768px) {
    .blog-title {
        font-size: 2.25rem;
    }
    
    .blog-meta {
        flex-direction: column;
        gap: 1rem;
    }
    
    .blog-actions {
        flex-direction: column;
    }
    
    .engagement-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .newsletter-cta {
        flex-direction: column;
        text-align: center;
    }
    
    .related-grid {
        grid-template-columns: 1fr;
    }
}