/* ================================================================
   CHAZ WYLLIE PORTFOLIO - MODERN MINIMALIST DESIGN
   Professional CSS with Animations & Responsive Layout
   ================================================================ */

/* ================================================================
   1. ROOT VARIABLES & TYPOGRAPHY
   ================================================================ */

:root {
    /* Color Palette - Modern & Professional */
    --color-bg-primary: #FAFAFA;
    --color-bg-secondary: #F3F4F6;
    --color-text-primary: #0F1419;
    --color-text-secondary: #6B7280;
    --color-text-light: #9CA3AF;
    --color-accent: #FFD700;
    --color-accent-dark: #E6C200;
    --color-border: #E5E7EB;
    --color-card-bg: #FFFFFF;
    --color-hover: #F9FAFB;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;

    /* Typography */
    --font-family-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-family-mono: 'JetBrains Mono', 'Courier New', monospace;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* ================================================================
   2. RESET & BASE STYLES
   ================================================================ */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-body);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    font-size: 1rem;
}

a {
    color: inherit;
    text-decoration: none;
}

/* Skip to content link */
.skip-to-content {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-accent);
    color: var(--color-text-primary);
    padding: var(--space-sm) var(--space-md);
    text-decoration: none;
    z-index: 100;
    border-radius: var(--radius-sm);
}

.skip-to-content:focus {
    top: 0;
}

/* ================================================================
   3. HEADER & NAVIGATION
   ================================================================ */

.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg) var(--space-md);
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    position: relative;
    z-index: 50;
    transition: var(--transition-base);
    border-bottom: 1px solid transparent;
}

.header.scrolled {
    background-color: rgba(250, 250, 250, 0.95);
    backdrop-filter: blur(10px);
    border-bottom-color: var(--color-border);
    box-shadow: var(--shadow-sm);
}

.logo {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    transition: var(--transition-fast);
    letter-spacing: -0.5px;
}

.logo:hover {
    color: var(--color-accent);
}

/* Navigation */
.nav ul {
    display: flex;
    list-style: none;
    gap: var(--space-lg);
}

.nav a {
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    position: relative;
    transition: color var(--transition-fast);
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-base);
}

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

.nav a:hover::after {
    width: 100%;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 5px;
    padding: var(--space-sm);
}

.menu-toggle span {
    width: 24px;
    height: 3px;
    background-color: var(--color-text-primary);
    border-radius: 2px;
    transition: var(--transition-base);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ================================================================
   4. SECTIONS & CONTAINER
   ================================================================ */

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

section {
    padding: var(--space-2xl) 0;
}

/* Animations */
[data-animate] {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

[data-animate].animated {
    opacity: 1;
    transform: translateY(0);
}

/* ================================================================
   5. HERO SECTION
   ================================================================ */

.hero {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-2xl) 0 var(--space-xl);
    min-height: 70vh;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.03) 0%, rgba(15, 20, 25, 0.02) 100%);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-2xl);
}

.hero-content {
    max-width: 700px;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 3.5rem);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-md);
    line-height: 1.1;
    letter-spacing: -1px;
    color: var(--color-text-primary);
}

.hero p {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.8;
}

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

/* ================================================================
   6. BUTTONS
   ================================================================ */

.btn-primary,
.btn-secondary,
.btn-link {
    padding: 0.875rem 1.75rem;
    border: none;
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: var(--transition-base);
    display: inline-block;
    text-decoration: none;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-text-primary);
    box-shadow: var(--shadow-md);
}

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

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

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

.btn-link {
    background: none;
    color: var(--color-text-primary);
    padding: var(--space-sm) 0;
    font-size: 1rem;
    border-bottom: 2px solid var(--color-accent);
    border-radius: 0;
    transition: all var(--transition-base);
}

.btn-link:hover {
    color: var(--color-accent);
    transform: translateX(4px);
}

/* ================================================================
   7. ABOUT SECTION
   ================================================================ */

.about {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-2xl);
    align-items: center;
    padding: var(--space-2xl) 0;
}

.about-image-wrapper {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    max-width: 300px;
    height: 600px;
}

.about-image-wrapper img {
    width: 100%;
    height: 100%;
    border-radius: var(--radius-lg);
    object-fit: cover;
    object-position: center 25%;
    transform: scale(1.5);
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-slow);
}

.about-image-wrapper:hover img {
    transform: scale(1);
}

.about-text h2 {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-lg);
    line-height: 1.2;
}

.about-text p {
    font-size: 1.0625rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.8;
}

.about-text p:last-of-type {
    margin-bottom: var(--space-xl);
}

/* ================================================================
   8. SKILLS SECTION
   ================================================================ */

.skills {
    padding: var(--space-2xl) 0;
}

.skills h2 {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.skill-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-2xl);
}

.skill-category h3 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-lg);
    color: var(--color-text-primary);
}

.skill-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.skill-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    padding: var(--space-md);
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.skill-item:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-sm);
}

.skill-item span {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    font-size: 1rem;
}

.skill-description {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-normal);
    line-height: 1.4;
}

.skill-bar {
    width: 100%;
    height: 6px;
    background-color: var(--color-border);
    border-radius: 3px;
    overflow: hidden;
    position: relative;
    margin-top: var(--space-xs);
}

.skill-bar::after {
    content: '';
    position: absolute;
    height: 100%;
    background-color: var(--color-accent);
    border-radius: 3px;
    animation: fillBar 1.2s ease-out 0.2s forwards;
}

.skill-item[data-level="beginner"] .skill-bar::after {
    width: 33%;
}

.skill-item[data-level="intermediate"] .skill-bar::after {
    width: 66%;
}

.skill-item[data-level="advanced"] .skill-bar::after {
    width: 100%;
}

@keyframes fillBar {
    from {
        width: 0;
    }
    to {
        width: var(--final-width, 100%);
    }
}

/* ================================================================
   9. COURSES SECTION
   ================================================================ */

.courses {
    background-color: var(--color-bg-secondary);
    padding: var(--space-2xl);
    border-radius: var(--radius-lg);
    margin: var(--space-2xl) 0;
}

.courses h2 {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    text-align: center;
    margin-bottom: var(--space-2xl);
}

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

.course-item {
    background-color: var(--color-card-bg);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    text-align: center;
    font-weight: var(--font-weight-medium);
    border: 1px solid var(--color-border);
    transition: var(--transition-base);
}

.course-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
}

/* ================================================================
   10. PROJECTS SECTION
   ================================================================ */

.projects {
    padding: var(--space-2xl) 0;
}

.projects h2 {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.project-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-2xl);
}

.project-card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-base);
    display: flex;
    flex-direction: column;
    height: 100%;
    box-shadow: var(--shadow-sm);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}

.project-image-placeholder {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.1) 0%, rgba(15, 20, 25, 0.05) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.project-content {
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-content h3 {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-sm);
    color: var(--color-text-primary);
}

.project-description {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: var(--space-lg);
    flex-grow: 1;
}

.project-tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
}

.tech-badge {
    display: inline-block;
    background-color: var(--color-bg-secondary);
    color: var(--color-text-primary);
    padding: 0.375rem 0.75rem;
    border-radius: 20px;
    font-size: 0.825rem;
    font-weight: var(--font-weight-medium);
    border: 1px solid var(--color-border);
    font-family: var(--font-family-mono);
}

.project-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.project-links .btn-link {
    font-size: 0.95rem;
}

/* ================================================================
   11. EXPERIENCE SECTION
   ================================================================ */

.experience {
    padding: var(--space-2xl) 0;
}

.experience h2 {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.experience-timeline {
    max-width: 700px;
    margin: 0 auto var(--space-2xl);
}

.experience-item {
    background-color: var(--color-card-bg);
    padding: var(--space-lg);
    border-left: 4px solid var(--color-accent);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    transition: var(--transition-base);
}

.experience-item:hover {
    box-shadow: var(--shadow-md);
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: var(--space-sm);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.experience-header h3 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.company {
    color: var(--color-accent);
    font-weight: var(--font-weight-semibold);
    font-size: 0.95rem;
}

.duration {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--space-md);
}

.contributions {
    list-style: none;
    padding-left: var(--space-md);
}

.contributions li {
    color: var(--color-text-secondary);
    margin-bottom: 0.5rem;
    padding-left: var(--space-md);
    position: relative;
}

.contributions li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: bold;
}

.experience-placeholder {
    text-align: center;
    padding: var(--space-lg);
    color: var(--color-text-light);
    font-style: italic;
}

/* ================================================================
   12. CONTACT SECTION
   ================================================================ */

.contact {
    background-color: var(--color-bg-secondary);
    padding: var(--space-2xl);
    border-radius: var(--radius-lg);
    text-align: center;
    margin: var(--space-2xl) 0;
}

.contact h2 {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-md);
}

.contact-intro {
    color: var(--color-text-secondary);
    font-size: 1.125rem;
    margin-bottom: var(--space-2xl);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

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

.contact-card {
    background-color: var(--color-card-bg);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    transition: var(--transition-base);
    text-decoration: none;
}

.contact-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.contact-card h3 {
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: 0.5rem;
    color: var(--color-text-primary);
}

.contact-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

/* ================================================================
   13. FOOTER
   ================================================================ */

.footer {
    background-color: var(--color-text-primary);
    color: var(--color-bg-primary);
    padding: var(--space-lg) var(--space-md);
    text-align: center;
    font-size: 0.875rem;
    margin-top: var(--space-2xl);
}

.footer p {
    max-width: 1200px;
    margin: 0 auto;
}

/* ================================================================
   14. RESPONSIVE DESIGN
   ================================================================ */

@media (max-width: 768px) {
    :root {
        --space-xl: 2rem;
        --space-2xl: 3rem;
    }

    .header {
        padding: var(--space-md);
    }

    .menu-toggle {
        display: flex;
    }

    .nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--color-bg-primary);
        border-bottom: 1px solid var(--color-border);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-20px);
        transition: all var(--transition-base);
        max-height: 0;
        overflow: hidden;
    }

    .nav.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        max-height: 500px;
    }

    .nav ul {
        flex-direction: column;
        gap: 0;
        padding: var(--space-lg) var(--space-md);
    }

    .nav li {
        border-bottom: 1px solid var(--color-border);
    }

    .nav li:last-child {
        border-bottom: none;
    }

    .nav a {
        display: block;
        padding: var(--space-md) 0;
    }

    .nav a::after {
        display: none;
    }

    .hero {
        min-height: 50vh;
        padding: var(--space-xl) 0 var(--space-lg);
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .about {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .about-text h2 {
        font-size: 1.875rem;
    }

    .skill-categories {
        grid-template-columns: 1fr;
    }

    .project-list {
        grid-template-columns: 1fr;
    }

    .courses {
        margin: var(--space-lg) 0;
        padding: var(--space-lg);
    }

    .contact {
        margin: var(--space-lg) 0;
        padding: var(--space-lg);
    }

    .experience-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .contact-methods {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        --space-lg: 1.5rem;
        --space-xl: 1.5rem;
        --space-2xl: 2rem;
    }

    main {
        padding: 0 var(--space-sm);
    }

    .hero h1 {
        font-size: 1.5rem;
    }

    .hero p {
        font-size: 0.95rem;
    }

    .about-text h2,
    .skills h2,
    .courses h2,
    .projects h2,
    .experience h2,
    .contact h2 {
        font-size: 1.75rem;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
    }

    .hero-buttons {
        gap: var(--space-sm);
    }

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

    .skill-bar {
        width: 100%;
    }

    .tech-badge {
        font-size: 0.75rem;
    }
}

/* ================================================================
   15. ACCESSIBILITY & UTILITIES
   ================================================================ */

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

@media (prefers-color-scheme: dark) {
    :root {
        --color-bg-primary: #0F1419;
        --color-bg-secondary: #1A1F29;
        --color-text-primary: #FAFAFA;
        --color-text-secondary: #D1D5DB;
        --color-text-light: #9CA3AF;
        --color-card-bg: #1F2937;
        --color-border: #374151;
        --color-hover: #111827;
    }

    .header.scrolled {
        background-color: rgba(15, 20, 25, 0.95);
    }

    .hero {
        background: linear-gradient(135deg, rgba(255, 215, 0, 0.05) 0%, rgba(250, 250, 250, 0.02) 100%);
    }
}

/* ================================================================
   16. GITHUB STATS CARD
   ================================================================ */

.github-stats-card {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-top: var(--space-xl);
    padding: var(--space-lg);
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.05) 0%, rgba(15, 20, 25, 0.05) 100%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    animation: slideUp 0.6s ease-out 0.3s both;
}

.github-stat {
    text-align: center;
    padding: var(--space-md);
}

.stat-value {
    font-size: 1.75rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-accent);
    margin-bottom: var(--space-xs);
    font-family: var(--font-family-mono);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ================================================================
   17. PROJECT METRICS & CHARTS
   ================================================================ */

.project-metrics {
    background-color: var(--color-bg-secondary);
    padding: var(--space-2xl);
    border-radius: var(--radius-lg);
    margin: var(--space-2xl) 0;
}

.project-metrics h2 {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    text-align: center;
    margin-bottom: var(--space-2xl);
    color: var(--color-text-primary);
}

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

.metric-card {
    background-color: var(--color-card-bg);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: var(--transition-base);
    animation: slideUp 0.6s ease-out both;
}

.metric-card:nth-child(2) {
    animation-delay: 0.1s;
}

.metric-card:nth-child(3) {
    animation-delay: 0.2s;
}

.metric-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}

.metric-card h3 {
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-lg);
    color: var(--color-text-primary);
    text-align: center;
}

.metric-card canvas {
    max-width: 100%;
    height: auto;
}

/* ================================================================
   18. ENHANCED BUTTON & INTERACTIVE EFFECTS
   ================================================================ */

.btn-primary,
.btn-secondary {
    position: relative;
    overflow: hidden;
}

.btn-primary::before,
.btn-secondary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.btn-primary:active::before {
    animation: ripple 0.6s ease-out;
}

.btn-secondary:active::before {
    animation: ripple 0.6s ease-out;
}

@keyframes ripple {
    from {
        width: 0;
        height: 0;
        opacity: 1;
    }
    to {
        width: 300px;
        height: 300px;
        opacity: 0;
    }
}

/* Enhanced Button Hover */
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(255, 215, 0, 0.3);
}

.btn-secondary:hover {
    transform: translateY(-3px);
    background-color: rgba(15, 20, 25, 0.05);
}

/* ================================================================
   19. PROJECT CARD 3D TILT EFFECTS
   ================================================================ */

.project-card {
    perspective: 1000px;
    transform-style: preserve-3d;
}

/* Smooth transitions for tilt */
.project-card[data-tilt] {
    transition: all 0.3s cubic-bezier(0.23, 1, 0.320, 1);
}

.project-card[data-tilt]:hover {
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
}

/* ================================================================
   20. GSAP SCROLL ANIMATIONS
   ================================================================ */

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
    }
    50% {
        box-shadow: 0 0 20px rgba(255, 215, 0, 0.8);
    }
}

/* ================================================================
   21. LINK & HOVER ENHANCEMENTS
   ================================================================ */

a {
    transition: color var(--transition-fast);
}

a:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
    border-radius: 2px;
}

/* Underline animation for links */
.btn-link {
    position: relative;
    padding-bottom: 4px;
    color: var(--color-accent);
    text-decoration: none;
}

.btn-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition-base);
}

.btn-link:hover::after {
    width: 100%;
}

.btn-link:hover {
    color: var(--color-accent);
}

/* ================================================================
   22. SMOOTH SCROLL & TRANSITIONS
   ================================================================ */

html {
    scroll-behavior: smooth;
}

body {
    transition: background-color var(--transition-slow), color var(--transition-slow);
}

/* ================================================================
   23. MICRO-INTERACTIONS FOR FORM ELEMENTS
   ================================================================ */

input:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.1);
    transition: box-shadow var(--transition-fast);
}

/* ================================================================
   24. LOADING & TRANSITION STATES
   ================================================================ */

.loading {
    opacity: 0.6;
    pointer-events: none;
}

.transition-fade {
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Spinner animation */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 215, 0, 0.3);
    border-radius: 50%;
    border-top-color: var(--color-accent);
    animation: spin 1s linear infinite;
}

/* ================================================================
   25. MOBILE RESPONSIVENESS FOR NEW SECTIONS
   ================================================================ */

@media (max-width: 768px) {
    .github-stats-card {
        grid-template-columns: 1fr;
        gap: var(--space-md);
        padding: var(--space-md);
    }

    .metrics-container {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

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

    .metric-card h3 {
        font-size: 1rem;
        margin-bottom: var(--space-md);
    }

    .stat-value {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .github-stats-card {
        padding: var(--space-sm);
    }

    .github-stat {
        padding: var(--space-sm);
    }

    .stat-value {
        font-size: 1.25rem;
    }

    .stat-label {
        font-size: 0.75rem;
    }

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

    .metric-card h3 {
        font-size: 0.9rem;
    }
}

/* Print Styles */
@media print {
    .header,
    .menu-toggle,
    .hero-buttons,
    .btn-link,
    .footer,
    .github-stats-card,
    .project-metrics {
        display: none;
    }

    body {
        background-color: white;
        color: black;
    }

    a {
        text-decoration: underline;
    }
}