@layer settings,      /* Colors, typography, resets */
  structure,     /* Body, header, main, footer */
  components,    /* UI building blocks */
  adjustments,   /* Area-specific tweaks */
  screens,       /* Media query handling */
  overrides; /* Final overrides */

@layer settings {
    /* CSS Custom Properties for Design System */
    :root {
        /* Color Palette - Light Theme */
        --color-bg: #ffffff;
        --color-bg-secondary: #f8fafc;
        --color-bg-tertiary: #f1f5f9;
        --color-text: #1e293b;
        --color-text-secondary: #64748b;
        --color-text-muted: #94a3b8;
        --color-primary: #3b82f6;
        --color-primary-hover: #2563eb;
        --color-primary-light: #dbeafe;
        --color-secondary: #8b5cf6;
        --color-accent: #f59e0b;
        --color-accent-hover: #d97706;
        --color-success: #10b981;
        --color-warning: #f59e0b;
        --color-error: #ef4444;
        --color-border: #e2e8f0;
        --color-border-light: #f1f5f9;
        --color-shadow: rgba(15, 23, 42, 0.08);
        --color-shadow-hover: rgba(15, 23, 42, 0.15);

        /* Typography */
        --font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        --font-code: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, "Courier New", monospace;
        --font-size-xs: 0.75rem;
        --font-size-sm: 0.875rem;
        --font-size-base: 1rem;
        --font-size-lg: 1.125rem;
        --font-size-xl: 1.25rem;
        --font-size-2xl: 1.5rem;
        --font-size-3xl: 1.875rem;
        --font-size-4xl: 2.25rem;
        --line-height-tight: 1.25;
        --line-height-normal: 1.5;
        --line-height-relaxed: 1.75;

        /* Spacing */
        --space-1: 0.25rem;
        --space-2: 0.5rem;
        --space-3: 0.75rem;
        --space-4: 1rem;
        --space-5: 1.25rem;
        --space-6: 1.5rem;
        --space-8: 2rem;
        --space-10: 2.5rem;
        --space-12: 3rem;
        --space-16: 4rem;
        --space-20: 5rem;

        /* Borders and Radius */
        --radius-sm: 0.375rem;
        --radius-md: 0.5rem;
        --radius-lg: 0.75rem;
        --radius-xl: 1rem;
        --radius-full: 9999px;

        /* Shadows */
        --shadow-sm: 0 1px 2px 0 var(--color-shadow);
        --shadow-md: 0 4px 6px -1px var(--color-shadow), 0 2px 4px -1px rgba(15, 23, 42, 0.06);
        --shadow-lg: 0 10px 15px -3px var(--color-shadow), 0 4px 6px -2px rgba(15, 23, 42, 0.05);
        --shadow-xl: 0 20px 25px -5px var(--color-shadow), 0 10px 10px -5px rgba(15, 23, 42, 0.04);

        /* Transitions */
        --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
        --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
        --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    }

    /* Light Theme Variables */
    [data-theme="light"],
    :root {
        --color-bg: #ffffff;
        --color-bg-secondary: #f8fafc;
        --color-bg-tertiary: #f1f5f9;
        --color-text: #1e293b;
        --color-text-secondary: #64748b;
        --color-text-muted: #94a3b8;
        --color-primary: #3b82f6;
        --color-primary-hover: #2563eb;
        --color-primary-light: #dbeafe;
        --color-secondary: #8b5cf6;
        --color-accent: #f59e0b;
        --color-accent-hover: #d97706;
        --color-success: #10b981;
        --color-warning: #f59e0b;
        --color-error: #ef4444;
        --color-border: #e2e8f0;
        --color-border-light: #f1f5f9;
        --color-shadow: rgba(15, 23, 42, 0.08);
        --color-shadow-hover: rgba(15, 23, 42, 0.15);
    }

    /* Dark Theme Variables */
    [data-theme="dark"] {
        --color-bg: #0f172a;
        --color-bg-secondary: #1e293b;
        --color-bg-tertiary: #334155;
        --color-text: #f1f5f9;
        --color-text-secondary: #cbd5e1;
        --color-text-muted: #94a3b8;
        --color-primary: #60a5fa;
        --color-primary-hover: #3b82f6;
        --color-primary-light: rgba(59, 130, 246, 0.1);
        --color-secondary: #a78bfa;
        --color-accent: #fbbf24;
        --color-accent-hover: #f59e0b;
        --color-success: #34d399;
        --color-warning: #fbbf24;
        --color-error: #f87171;
        --color-border: #475569;
        --color-border-light: #334155;
        --color-shadow: rgba(0, 0, 0, 0.3);
        --color-shadow-hover: rgba(0, 0, 0, 0.5);
    }

    /* CSS Reset and Base Styles */
    *,
    *::before,
    *::after {
        box-sizing: border-box;
    }

    * {
        margin: 0;
        padding: 0;
    }

    html {
        scroll-behavior: smooth;
        -webkit-text-size-adjust: 100%;
        -ms-text-size-adjust: 100%;
    }

    body {
        font-family: var(--font-primary);
        font-size: var(--font-size-base);
        line-height: var(--line-height-normal);
        color: var(--color-text);
        background-color: var(--color-bg);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        min-height: 100vh;
        overflow-x: hidden;
    }

    /* Typography Styles */
    h1,
    h2,
    h3,
    h4,
    h5,
    h6 {
        font-weight: 700;
        line-height: var(--line-height-tight);
        color: var(--color-text);
        margin-bottom: var(--space-4);
        letter-spacing: -0.025em;
    }

    h1 {
        font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-4xl));
        margin-bottom: var(--space-6);
        background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }

    h2 {
        font-size: var(--font-size-3xl);
        margin-top: var(--space-12);
        margin-bottom: var(--space-6);
        position: relative;
    }

    h2::before {
        content: "";
        position: absolute;
        left: 0;
        bottom: -8px;
        width: 3rem;
        height: 3px;
        background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
        border-radius: var(--radius-full);
    }

    h3 {
        font-size: var(--font-size-2xl);
        margin-top: var(--space-8);
        color: var(--color-primary);
    }

    h4 {
        font-size: var(--font-size-xl);
        margin-top: var(--space-6);
        font-weight: 600;
    }

    h5 {
        font-size: var(--font-size-lg);
        margin-top: var(--space-5);
        font-weight: 600;
    }

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

    p:last-child {
        margin-bottom: 0;
    }

    strong,
    b {
        font-weight: 700;
        color: var(--color-text);
    }

    em,
    i {
        font-style: italic;
    }

    /* Links */
    a {
        color: var(--color-primary);
        text-decoration: none;
        transition: color var(--transition-fast);
        position: relative;
    }

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

    a:not(.btn):not(.nav-link)::after {
        content: "";
        position: absolute;
        width: 0;
        height: 2px;
        bottom: -2px;
        left: 0;
        background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
        transition: width var(--transition-normal);
    }

    a:not(.btn):not(.nav-link):hover::after {
        width: 100%;
    }

    /* Code Styles */
    code {
        font-family: var(--font-code);
        font-size: 0.875em;
        background-color: var(--color-bg-tertiary);
        color: var(--color-accent);
        padding: var(--space-1) var(--space-2);
        border-radius: var(--radius-sm);
        font-weight: 500;
    }

    pre {
        font-family: var(--font-code);
        background-color: var(--color-bg-tertiary);
        padding: var(--space-6);
        border-radius: var(--radius-lg);
        overflow-x: auto;
        border: 1px solid var(--color-border);
        position: relative;
        margin: var(--space-6) 0;
    }

    pre code {
        background: none;
        padding: 0;
        color: var(--color-text);
    }

    /* Blockquotes */
    blockquote {
        border-left: 4px solid var(--color-primary);
        background-color: var(--color-primary-light);
        padding: var(--space-6);
        margin: var(--space-8) 0;
        border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
        position: relative;
        font-style: italic;
        font-size: var(--font-size-lg);
    }

    blockquote::before {
        content: '"';
        font-size: 4rem;
        color: var(--color-primary);
        position: absolute;
        top: -10px;
        left: var(--space-4);
        line-height: 1;
        opacity: 0.3;
    }

    /* Lists */
    ul,
    ol {
        margin-bottom: var(--space-6);
        padding-left: var(--space-8);
    }

    li {
        margin-bottom: var(--space-2);
        line-height: var(--line-height-relaxed);
        color: var(--color-text-secondary);
    }

    ul li {
        position: relative;
    }

    ul li::marker {
        content: "▸ ";
        color: var(--color-primary);
        font-weight: bold;
    }

    /* Images */
    img {
        max-width: 100%;
        height: auto;
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-md);
        transition: transform var(--transition-normal);
    }

    img:hover {
        transform: scale(1.02);
    }

    /* HR Separator */
    hr {
        border: none;
        height: 1px;
        background: linear-gradient(90deg, transparent, var(--color-border), transparent);
        margin: var(--space-12) 0;
    }

    /* Selection */
    ::selection {
        background-color: var(--color-primary-light);
        color: var(--color-primary);
    }
}

@layer structure {
    /* Page Layout */
    body {
        display: flex;
        flex-direction: column;
        min-height: 100vh;
    }

    /* Header */
    header {
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        border-bottom: 1px solid var(--color-border-light);
        position: sticky;
        top: 0;
        z-index: 100;
        transition: all var(--transition-normal);
    }

    header.scrolled {
        box-shadow: var(--shadow-lg);
        background: rgba(255, 255, 255, 0.98);
    }

    /* Navigation */
    nav {
        max-width: 1200px;
        margin: 0 auto;
        padding: var(--space-4) var(--space-6);
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .nav-brand {
        font-size: var(--font-size-xl);
        font-weight: 700;
        background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }

    .nav-links {
        display: flex;
        list-style: none;
        gap: var(--space-8);
        padding: 0;
        margin: 0;
    }

    .nav-link {
        color: var(--color-text-secondary);
        font-weight: 500;
        transition: color var(--transition-fast);
        position: relative;
    }

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

    .nav-link::after {
        content: "";
        position: absolute;
        bottom: -8px;
        left: 50%;
        transform: translateX(-50%);
        width: 0;
        height: 2px;
        background: var(--color-primary);
        border-radius: var(--radius-full);
        transition: width var(--transition-normal);
    }

    .nav-link:hover::after,
    .nav-link.active::after {
        width: 100%;
    }

    /* Main Content */
    main {
        flex: 1;
        max-width: 1200px;
        margin: 0 auto;
        padding: var(--space-12) var(--space-6);
        width: 100%;
        animation: fadeInUp 0.6s ease-out;
    }

    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(20px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* Footer */
    footer {
        background: var(--color-bg-secondary);
        border-top: 1px solid var(--color-border);
        padding: var(--space-8) var(--space-6);
        text-align: center;
        color: var(--color-text-muted);
        font-size: var(--font-size-sm);
    }

    footer p {
        margin: 0;
        color: var(--color-text-muted);
    }
}

@layer components {
    /* Buttons */
    .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-sm);
        font-weight: 600;
        text-decoration: none;
        border: none;
        border-radius: var(--radius-lg);
        cursor: pointer;
        transition: all var(--transition-normal);
        position: relative;
        overflow: hidden;
    }

    .btn::before {
        content: "";
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
        transition: left var(--transition-slow);
    }

    .btn:hover::before {
        left: 100%;
    }

    .btn-primary {
        background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
        color: white;
        box-shadow: var(--shadow-md);
    }

    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-lg);
    }

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

    .btn-secondary:hover {
        background: var(--color-primary);
        color: white;
        transform: translateY(-2px);
    }

    /* Cards */
    .card {
        background: var(--color-bg);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-xl);
        padding: var(--space-8);
        margin-bottom: var(--space-8);
        box-shadow: var(--shadow-sm);
        transition: all var(--transition-normal);
        position: relative;
        overflow: hidden;
    }

    .card::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 4px;
        background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    }

    .card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-xl);
        border-color: var(--color-primary-light);
    }

    .card h3 {
        margin-top: 0;
        margin-bottom: var(--space-4);
    }

    /* Skill ratings */
    .skill-rating {
        display: flex;
        align-items: center;
        gap: var(--space-2);
        margin: var(--space-2) 0;
    }

    .stars {
        display: flex;
        gap: var(--space-1);
    }

    .star {
        width: 16px;
        height: 16px;
        background: var(--color-border);
        border-radius: var(--radius-sm);
        position: relative;
        overflow: hidden;
    }

    .star.filled::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover));
        animation: fillStar 0.3s ease-out;
    }

    @keyframes fillStar {
        from {
            width: 0;
        }
        to {
            width: 100%;
        }
    }

    /* Progress bars */
    .progress-bar {
        width: 100%;
        height: 8px;
        background: var(--color-border-light);
        border-radius: var(--radius-full);
        overflow: hidden;
        margin: var(--space-2) 0;
    }

    .progress-fill {
        height: 100%;
        background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
        border-radius: var(--radius-full);
        transition: width 1s ease-out;
        animation: progressAnimation 2s ease-out;
    }

    @keyframes progressAnimation {
        from {
            width: 0;
        }
        to {
            width: var(--progress-width, 0%);
        }
    }

    /* Badges */
    .badge {
        display: inline-flex;
        align-items: center;
        gap: var(--space-1);
        padding: var(--space-1) var(--space-3);
        background: var(--color-primary-light);
        color: var(--color-primary);
        font-size: var(--font-size-xs);
        font-weight: 600;
        border-radius: var(--radius-full);
        text-transform: uppercase;
        letter-spacing: 0.05em;
    }

    /* Timeline */
    .timeline {
        position: relative;
        padding-left: var(--space-8);
    }

    .timeline::before {
        content: "";
        position: absolute;
        left: var(--space-4);
        top: 0;
        bottom: 0;
        width: 2px;
        background: linear-gradient(180deg, var(--color-primary), var(--color-secondary));
    }

    .timeline-item {
        position: relative;
        padding-bottom: var(--space-8);
    }

    .timeline-item::before {
        content: "";
        position: absolute;
        left: -var(--space-6);
        top: var(--space-2);
        width: 12px;
        height: 12px;
        background: var(--color-primary);
        border-radius: var(--radius-full);
        box-shadow:
            0 0 0 4px var(--color-bg),
            0 0 0 6px var(--color-primary-light);
    }

    /* Grid layouts */
    .grid {
        display: grid;
        gap: var(--space-8);
    }

    .grid-2 {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }

    .grid-3 {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }

    /* Stats */
    .stats {
        display: flex;
        justify-content: space-around;
        padding: var(--space-8);
        background: var(--color-bg-secondary);
        border-radius: var(--radius-xl);
        margin: var(--space-8) 0;
    }

    .stat {
        text-align: center;
    }

    .stat-number {
        font-size: var(--font-size-3xl);
        font-weight: 700;
        color: var(--color-primary);
        display: block;
    }

    .stat-label {
        font-size: var(--font-size-sm);
        color: var(--color-text-muted);
        text-transform: uppercase;
        letter-spacing: 0.05em;
        font-weight: 600;
    }

    /* Floating elements */
    .floating {
        animation: float 6s ease-in-out infinite;
    }

    @keyframes float {
        0%,
        100% {
            transform: translateY(0px);
        }
        50% {
            transform: translateY(-10px);
        }
    }

    /* Loading spinner */
    .spinner {
        width: 40px;
        height: 40px;
        border: 4px solid var(--color-border-light);
        border-top: 4px solid var(--color-primary);
        border-radius: 50%;
        animation: spin 1s linear infinite;
    }

    @keyframes spin {
        0% {
            transform: rotate(0deg);
        }
        100% {
            transform: rotate(360deg);
        }
    }
}

@layer adjustments {
    /* Home page specific styles */
    .hero-section {
        text-align: center;
        padding: var(--space-20) 0;
        background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
        position: relative;
        overflow: hidden;
    }

    .hero-section::before {
        content: "";
        position: absolute;
        top: -50%;
        left: -50%;
        width: 200%;
        height: 200%;
        background: radial-gradient(circle, var(--color-primary-light) 0%, transparent 70%);
        opacity: 0.1;
        animation: pulse 4s ease-in-out infinite;
    }

    @keyframes pulse {
        0%,
        100% {
            transform: scale(1);
            opacity: 0.1;
        }
        50% {
            transform: scale(1.1);
            opacity: 0.2;
        }
    }

    /* Project showcase */
    .project-showcase {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
        gap: var(--space-8);
        margin: var(--space-12) 0;
    }

    .project-card {
        background: var(--color-bg);
        border-radius: var(--radius-xl);
        overflow: hidden;
        box-shadow: var(--shadow-md);
        transition: all var(--transition-normal);
        border: 1px solid var(--color-border);
    }

    .project-card:hover {
        transform: translateY(-8px);
        box-shadow: var(--shadow-xl);
    }

    .project-image {
        height: 200px;
        background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary));
        position: relative;
        overflow: hidden;
    }

    .project-content {
        padding: var(--space-6);
    }

    .project-tags {
        display: flex;
        flex-wrap: wrap;
        gap: var(--space-2);
        margin: var(--space-4) 0;
    }

    .project-tag {
        font-size: var(--font-size-xs);
        padding: var(--space-1) var(--space-2);
        background: var(--color-bg-tertiary);
        color: var(--color-text-secondary);
        border-radius: var(--radius-sm);
        font-weight: 500;
    }

    /* Contact form */
    .contact-form {
        max-width: 600px;
        margin: var(--space-12) auto;
        padding: var(--space-8);
        background: var(--color-bg-secondary);
        border-radius: var(--radius-xl);
        box-shadow: var(--shadow-lg);
    }

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

    .form-label {
        display: block;
        margin-bottom: var(--space-2);
        font-weight: 600;
        color: var(--color-text);
    }

    .form-input,
    .form-textarea {
        width: 100%;
        padding: var(--space-3) var(--space-4);
        border: 2px solid var(--color-border);
        border-radius: var(--radius-lg);
        font-family: var(--font-primary);
        font-size: var(--font-size-base);
        transition: border-color var(--transition-fast);
        background: var(--color-bg);
    }

    .form-input:focus,
    .form-textarea:focus {
        outline: none;
        border-color: var(--color-primary);
        box-shadow: 0 0 0 3px var(--color-primary-light);
    }

    .form-textarea {
        min-height: 120px;
        resize: vertical;
    }

    /* Skills page specific */
    .skill-category {
        margin-bottom: var(--space-12);
    }

    .skill-list {
        display: grid;
        gap: var(--space-4);
    }

    .skill-item {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: var(--space-4);
        background: var(--color-bg-secondary);
        border-radius: var(--radius-lg);
        border-left: 4px solid var(--color-primary);
    }

    .skill-name {
        font-weight: 600;
        color: var(--color-text);
    }
}

@layer screens {
    /* Mobile First Responsive Design */

    /* Small screens */
    @media (max-width: 640px) {
        :root {
            --font-size-4xl: 2rem;
            --font-size-3xl: 1.75rem;
            --font-size-2xl: 1.5rem;
        }

        .mobile-menu-btn {
            display: flex;
        }

        nav {
            padding: var(--space-3) var(--space-4);
            position: relative;
        }

        .nav-links {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: var(--color-bg);
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: var(--space-8);
            transform: translateX(-100%);
            transition: transform var(--transition-normal);
            z-index: 999;
            border-right: 1px solid var(--color-border);
        }

        .nav-links.nav-open {
            transform: translateX(0);
        }

        .nav-link {
            font-size: var(--font-size-lg);
            display: flex;
            align-items: center;
            gap: var(--space-2);
        }

        body.nav-open {
            overflow: hidden;
        }

        main {
            padding: var(--space-8) var(--space-4);
        }

        h1 {
            font-size: var(--font-size-3xl);
        }

        h2 {
            font-size: var(--font-size-2xl);
            margin-top: var(--space-8);
        }

        .card {
            padding: var(--space-6);
        }

        .btn {
            padding: var(--space-3) var(--space-4);
            font-size: var(--font-size-sm);
        }

        .hero-section {
            padding: var(--space-16) var(--space-4);
        }

        .project-showcase {
            grid-template-columns: 1fr;
            gap: var(--space-6);
        }

        .stats {
            flex-direction: column;
            gap: var(--space-4);
        }

        .grid-2,
        .grid-3 {
            grid-template-columns: 1fr;
        }

        .skill-item {
            flex-direction: column;
            align-items: flex-start;
            gap: var(--space-2);
        }

        .footer-content {
            text-align: center;
        }

        .footer-nav ul {
            flex-direction: column;
            gap: var(--space-4);
        }

        .back-to-top {
            bottom: var(--space-4);
            right: var(--space-4);
            width: 45px;
            height: 45px;
        }
    }

    /* Medium screens */
    @media (min-width: 641px) and (max-width: 1024px) {
        main {
            padding: var(--space-10) var(--space-6);
        }

        .project-showcase {
            grid-template-columns: repeat(2, 1fr);
        }
    }

    /* Large screens */
    @media (min-width: 1025px) {
        .hero-section {
            padding: var(--space-20) 0;
        }

        .project-showcase {
            grid-template-columns: repeat(3, 1fr);
        }
    }

    /* Print styles */
    @media print {
        * {
            background: white !important;
            color: black !important;
            box-shadow: none !important;
        }

        header,
        footer {
            display: none;
        }

        main {
            max-width: none;
            padding: 0;
        }

        .btn,
        .card {
            border: 1px solid black;
        }
    }

    /* High contrast mode */
    @media (prefers-contrast: high) {
        :root {
            --color-bg: #ffffff;
            --color-text: #000000;
            --color-primary: #0000ee;
            --color-border: #000000;
        }
    }

    /* Reduced motion */
    @media (prefers-reduced-motion: reduce) {
        * {
            animation-duration: 0.01ms !important;
            animation-iteration-count: 1 !important;
            transition-duration: 0.01ms !important;
        }
    }
}

@layer overrides {
    /* Dark mode support - only apply if no manual theme is set */
    @media (prefers-color-scheme: dark) {
        :root:not([data-theme]) {
            --color-bg: #0f1419;
            --color-bg-secondary: #1a1f29;
            --color-bg-tertiary: #252a35;
            --color-text: #e2e8f0;
            --color-text-secondary: #94a3b8;
            --color-text-muted: #64748b;
            --color-primary: #60a5fa;
            --color-primary-hover: #3b82f6;
            --color-primary-light: rgba(96, 165, 250, 0.1);
            --color-secondary: #a78bfa;
            --color-accent: #fbbf24;
            --color-accent-hover: #f59e0b;
            --color-success: #34d399;
            --color-warning: #fbbf24;
            --color-error: #f87171;
            --color-border: #374151;
            --color-border-light: #2d3748;
            --color-shadow: rgba(0, 0, 0, 0.3);
            --color-shadow-hover: rgba(0, 0, 0, 0.5);
        }

        body {
            background-color: var(--color-bg);
            color: var(--color-text);
        }

        header {
            background: rgba(15, 20, 25, 0.95);
            backdrop-filter: blur(10px);
        }

        header.scrolled {
            background: rgba(15, 20, 25, 0.98);
        }

        .card {
            background: var(--color-bg-secondary);
            border-color: var(--color-border);
        }

        .card:hover {
            border-color: var(--color-primary-light);
        }

        blockquote {
            background-color: rgba(96, 165, 250, 0.05);
            border-left-color: var(--color-primary);
        }

        pre {
            background-color: var(--color-bg-tertiary);
            border-color: var(--color-border);
        }

        code {
            background-color: var(--color-bg-tertiary);
            color: var(--color-accent);
        }

        .hero-section {
            background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
        }

        .contact-form {
            background: var(--color-bg-secondary);
        }

        .form-input,
        .form-textarea {
            background: var(--color-bg-tertiary);
            border-color: var(--color-border);
            color: var(--color-text);
        }

        .form-input:focus,
        .form-textarea:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.1);
        }

        .skill-item {
            background: var(--color-bg-secondary);
        }

        .stats {
            background: var(--color-bg-secondary);
        }

        .project-card {
            background: var(--color-bg-secondary);
            border-color: var(--color-border);
        }

        .project-tag {
            background: var(--color-bg-tertiary);
            color: var(--color-text-secondary);
        }

        ::selection {
            background-color: rgba(96, 165, 250, 0.2);
            color: var(--color-primary);
        }
    }

    /* Mobile Navigation Styles */
    .mobile-menu-btn {
        display: none;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        width: 40px;
        height: 40px;
        background: none;
        border: none;
        cursor: pointer;
        padding: var(--space-2);
        border-radius: var(--radius-md);
        transition: all var(--transition-fast);
    }

    .hamburger-line {
        width: 20px;
        height: 2px;
        background: var(--color-text);
        transition: all var(--transition-fast);
        margin: 2px 0;
        border-radius: var(--radius-full);
    }

    .mobile-menu-btn[aria-expanded="true"] .hamburger-line:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-menu-btn[aria-expanded="true"] .hamburger-line:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-btn[aria-expanded="true"] .hamburger-line:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    /* Theme Toggle */
    .theme-toggle {
        position: relative;
        width: 40px;
        height: 40px;
        border: none;
        border-radius: var(--radius-full);
        background: var(--color-bg-secondary);
        cursor: pointer;
        transition: all var(--transition-normal);
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .theme-toggle:hover {
        background: var(--color-primary-light);
        transform: scale(1.05);
    }

    .theme-icon {
        position: absolute;
        font-size: 1.2em;
        transition: all var(--transition-normal);
        left: 50%;
        top: 50%;
        transform-origin: center;
        transform: translate(-50%, -50%);
    }

    .theme-icon-light {
        opacity: 1;
        transform: translate(-50%, -50%) rotate(0deg);
    }

    .theme-icon-dark {
        opacity: 0;
        transform: translate(-50%, -50%) rotate(-90deg);
    }

    [data-theme="dark"] .theme-icon-light {
        opacity: 0;
        transform: translate(-50%, -50%) rotate(90deg);
    }

    [data-theme="dark"] .theme-icon-dark {
        opacity: 1;
        transform: translate(-50%, -50%) rotate(0deg);
    }

    /* Reading Progress */
    .reading-progress {
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 3px;
        background: var(--color-border-light);
    }

    .reading-progress-bar {
        height: 100%;
        background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
        width: 0%;
        transition: width 0.1s ease-out;
    }

    /* Back to Top Button */
    .back-to-top {
        position: fixed;
        bottom: var(--space-6);
        right: var(--space-6);
        width: 50px;
        height: 50px;
        background: var(--color-primary);
        color: white;
        border: none;
        border-radius: var(--radius-full);
        cursor: pointer;
        box-shadow: var(--shadow-lg);
        transition: all var(--transition-normal);
        opacity: 0;
        visibility: hidden;
        transform: translateY(100px);
        z-index: 1000;
        font-size: 1.5em;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .back-to-top.visible {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .back-to-top:hover {
        background: var(--color-primary-hover);
        transform: translateY(-2px);
        box-shadow: var(--shadow-xl);
    }

    /* Page Header */
    .page-header {
        margin-bottom: var(--space-12);
        text-align: center;
    }

    /* Breadcrumb */
    .breadcrumb {
        margin-top: var(--space-4);
    }

    .breadcrumb ol {
        display: flex;
        justify-content: center;
        list-style: none;
        padding: 0;
        margin: 0;
        gap: var(--space-2);
    }

    .breadcrumb li {
        display: flex;
        align-items: center;
        font-size: var(--font-size-sm);
        color: var(--color-text-muted);
    }

    .breadcrumb li:not(:last-child)::after {
        content: "→";
        margin-left: var(--space-2);
        color: var(--color-text-muted);
    }

    .breadcrumb a {
        color: var(--color-primary);
        text-decoration: none;
    }

    /* Footer Styles */
    .footer-content {
        max-width: 1200px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: var(--space-6);
    }

    .footer-nav ul {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        list-style: none;
        padding: 0;
        margin: 0;
        gap: var(--space-6);
    }

    .footer-nav a {
        color: var(--color-text-muted);
        text-decoration: none;
        font-size: var(--font-size-sm);
        transition: color var(--transition-fast);
    }

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

    .social-links {
        display: flex;
        gap: var(--space-4);
    }

    .social-link {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        background: var(--color-bg-tertiary);
        border-radius: var(--radius-full);
        text-decoration: none;
        transition: all var(--transition-normal);
        font-size: 1.2em;
    }

    .social-link:hover {
        background: var(--color-primary);
        transform: translateY(-2px);
        box-shadow: var(--shadow-md);
    }

    .social-link:hover .social-icon {
        transform: scale(1.1);
    }

    .social-icon {
        transition: transform var(--transition-fast);
    }

    .copyright {
        text-align: center;
        font-size: var(--font-size-sm);
        color: var(--color-text-muted);
    }

    .separator {
        margin: 0 var(--space-2);
        color: var(--color-border);
    }

    /* Navigation Icons */
    .nav-icon {
        margin-right: var(--space-1);
        font-size: 1.1em;
    }

    /* Animation Classes */
    .animate-in {
        animation: fadeInUp 0.6s ease-out;
    }

    .animate-in-delay {
        animation: fadeInUp 0.6s ease-out 0.2s both;
    }

    .animate-in-delay-2 {
        animation: fadeInUp 0.6s ease-out 0.4s both;
    }

    /* Content Article Styling */
    .content {
        max-width: 800px;
        margin: 0 auto;
    }

    .content > * + * {
        margin-top: var(--space-4);
    }

    /* Utility classes */
    .text-center {
        text-align: center;
    }
    .text-left {
        text-align: left;
    }
    .text-right {
        text-align: right;
    }

    .mt-4 {
        margin-top: var(--space-4);
    }
    .mt-8 {
        margin-top: var(--space-8);
    }
    .mb-4 {
        margin-bottom: var(--space-4);
    }
    .mb-8 {
        margin-bottom: var(--space-8);
    }

    .p-4 {
        padding: var(--space-4);
    }
    .p-8 {
        padding: var(--space-8);
    }

    .rounded {
        border-radius: var(--radius-md);
    }
    .rounded-lg {
        border-radius: var(--radius-lg);
    }

    .shadow {
        box-shadow: var(--shadow-md);
    }
    .shadow-lg {
        box-shadow: var(--shadow-lg);
    }

    /* Emoji styling for better consistency */
    .emoji {
        font-style: normal;
        font-variant: normal;
        font-weight: normal;
        font-size: 1.2em;
        line-height: 1;
        display: inline-block;
    }

    /* Custom scrollbar */
    ::-webkit-scrollbar {
        width: 8px;
        height: 8px;
    }

    ::-webkit-scrollbar-track {
        background: var(--color-bg-secondary);
    }

    ::-webkit-scrollbar-thumb {
        background: var(--color-border);
        border-radius: var(--radius-full);
    }

    ::-webkit-scrollbar-thumb:hover {
        background: var(--color-primary);
    }

    /* Focus indicators for accessibility */
    .btn:focus,
    .form-input:focus,
    .form-textarea:focus,
    .nav-link:focus {
        outline: 2px solid var(--color-primary);
        outline-offset: 2px;
    }

    /* Skip to main content link */
    .skip-link {
        position: absolute;
        top: -40px;
        left: 6px;
        background: var(--color-primary);
        color: white;
        padding: var(--space-2) var(--space-4);
        text-decoration: none;
        border-radius: var(--radius-md);
        z-index: 1000;
        transition: top var(--transition-fast);
    }

    .skip-link:focus {
        top: 6px;
    }
}

/* End of enhanced styles.css */