:root {
    /* Color Palette - Dark, technical aesthetic */
    --bg-primary: #0a0e12;
    --bg-secondary: #12171d;
    --bg-tertiary: #1a2028;
    --accent-primary: #00ff88;
    --accent-secondary: #00d4ff;
    --text-primary: #e8edf2;
    --text-secondary: #8b95a1;
    --text-muted: #5a6470;
    --border-color: #252d38;
    --border-glow: rgba(0, 255, 136, 0.4);
    --gradient-1: linear-gradient(135deg, #00ff88 0%, #00d4ff 100%);
    --gradient-2: linear-gradient(135deg, rgba(0, 255, 136, 0.1) 0%, rgba(0, 212, 255, 0.1) 100%);

    /* Typography */
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    --font-sans: 'IBM Plex Sans', -apple-system, system-ui, sans-serif;

    /* Spacing */
    --container-max: 1200px;
    --section-padding: 120px;
    --gap-sm: 16px;
    --gap-md: 24px;
    --gap-lg: 48px;

    /* Timing (designer rules) */
    --timing-micro: 150ms;
    --timing-text: 750ms;
    --timing-section: 1000ms;
    --ease-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --ease-snap: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --ease-reveal: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    cursor: auto;
}

/* Restore cursor on mobile */
@media (hover: none) {
    body {
        cursor: auto;
    }

    .smart-cursor {
        display: none !important;
    }
}

/* Noise texture overlay - subtle */
.noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0.025;
    z-index: 9999;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 32px;
}

/* ==========================================
   HERO SECTION - Living & Alive
   ========================================== */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 1;
    will-change: transform, opacity;
    transform: translateZ(0);
    /* GPU acceleration */
}

/* Hero Badge with Processor Icon */
.hero-badge {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 28px;
}

.processor-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--accent-primary);
    animation: processorFloat 4s ease-in-out infinite;
}

@keyframes processorFloat {

    0%,
    100% {
        transform: translateY(0) rotate(0deg);
        box-shadow: 0 0 20px rgba(0, 255, 136, 0.1);
        border-color: var(--border-color);
    }

    25% {
        transform: translateY(-4px) rotate(1deg);
    }

    50% {
        transform: translateY(-2px) rotate(0deg);
        box-shadow: 0 0 30px rgba(0, 255, 136, 0.3);
        border-color: rgba(0, 255, 136, 0.4);
    }

    75% {
        transform: translateY(-6px) rotate(-1deg);
    }
}

/* Status Indicator - Organic Breathing */
.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    background: rgba(18, 23, 29, 0.8);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: border-color 200ms ease, background 200ms ease;
    transform: translateZ(0);
    align-items: center;
    gap: 10px;
    margin-bottom: 28px;
    padding: 10px 20px;
    background: rgba(18, 23, 29, 0.8);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: border-color var(--timing-micro) ease, background var(--timing-micro) ease;
}

.status-indicator:hover {
    border-color: var(--accent-primary);
    background: rgba(18, 23, 29, 0.95);
}

.dot {
    width: 8px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 50%;
    box-shadow: 0 0 4px rgba(0, 255, 136, 0.3);
    /* Animation controlled by JS for organic feel */
}

.status-text {
    transition: opacity var(--timing-micro) ease;
}

/* Hero Title - Always Visible */
.hero-title {
    font-family: var(--font-mono);
    font-size: clamp(40px, 8vw, 72px);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 16px;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 1;
    animation: heroNameReveal 1000ms var(--ease-reveal) forwards;
    transform: translateZ(0);
}

@keyframes heroNameReveal {
    0% {
        opacity: 0;
        transform: translateY(20px) translateZ(0);
        filter: blur(4px);
    }

    100% {
        opacity: 1;
        transform: translateY(0) translateZ(0);
        filter: blur(0);
    }
}

.hero-title .word-cluster {
    display: inline-block;
}

.hero-tagline {
    font-size: clamp(18px, 3vw, 24px);
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-family: var(--font-mono);
    opacity: 1;
    animation: fadeSlideUp 800ms var(--ease-reveal) 200ms both;
    transform: translateZ(0);
}

.hero-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 32px;
    color: var(--text-muted);
    font-size: 14px;
    opacity: 1;
    animation: fadeSlideUp 800ms var(--ease-reveal) 300ms both;
    transform: translateZ(0);
}

.separator {
    color: var(--border-color);
}

.hero-links {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    opacity: 1;
    animation: fadeSlideUp 800ms var(--ease-reveal) 400ms both;
    transform: translateZ(0);
}

/* Hero Links - Button Feedback Hierarchy */
.hero-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 14px;
    transition:
        border-color var(--timing-micro) ease,
        box-shadow 300ms ease,
        transform 200ms var(--ease-snap);
    will-change: transform;
}

.hero-link:hover {
    border-color: var(--accent-primary);
    box-shadow:
        0 0 20px rgba(0, 255, 136, 0.15),
        inset 0 0 20px rgba(0, 255, 136, 0.03);
}

.hero-link:active {
    transform: scale(0.96);
}

@keyframes fadeSlideUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================
   SECTION STYLES - Scroll Choreography
   ========================================== */
section {
    padding: var(--section-padding) 0;
    position: relative;
}

/* Section Headers - Arrive, Don't Appear */
.section-header {
    margin-bottom: var(--gap-lg);
}

.section-header.scroll-reveal {
    opacity: 0.6;
    transform: translateY(12px);
    transition:
        opacity var(--timing-section) var(--ease-reveal),
        transform var(--timing-section) var(--ease-reveal);
}

.section-header.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

.section-label {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    display: block;
    margin-bottom: 8px;
}

.section-title {
    font-family: var(--font-mono);
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    color: var(--text-primary);
}

/* Card Hidden State for Stagger */
.card-hidden {
    opacity: 0;
    transform: translateY(20px);
}

.card-revealed {
    opacity: 1;
    transform: translateY(0);
    transition:
        opacity 600ms var(--ease-reveal),
        transform 600ms var(--ease-reveal);
}

/* ==========================================
   ABOUT SECTION
   ========================================== */
.about-content {
    max-width: 800px;
}

.about-text {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.8;
}

.achievements {
    display: grid;
    gap: 24px;
    margin-top: 48px;
}

.achievement-item {
    display: flex;
    gap: 20px;
    padding: 24px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition:
        border-color 300ms ease,
        box-shadow 300ms ease,
        transform 300ms var(--ease-smooth);
}

.achievement-item:hover {
    border-color: var(--border-glow);
    box-shadow: 0 0 30px rgba(0, 255, 136, 0.08);
    transform: translateX(4px);
}

.achievement-icon {
    font-size: 32px;
    line-height: 1;
}

.achievement-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.achievement-text strong {
    color: var(--text-primary);
    font-size: 16px;
}

.achievement-text span {
    color: var(--text-muted);
    font-size: 14px;
}

/* ==========================================
   PROJECT CARDS - Depth, Not Scale
   ========================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 24px;
}

.project-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px;
    position: relative;
    overflow: hidden;
    transition:
        border-color 300ms ease,
        box-shadow 400ms ease;
}

/* Glow border on hover - NOT scale */
.project-card:hover {
    border-color: var(--border-glow);
    box-shadow:
        0 0 40px rgba(0, 255, 136, 0.1),
        inset 0 0 60px rgba(0, 255, 136, 0.02);
}

/* Top gradient bar */
.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 400ms var(--ease-reveal);
}

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

/* Metadata overlay - slides up from bottom */
.card-meta-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 16px 32px;
    background: linear-gradient(to top, var(--bg-tertiary), transparent);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transform: translateY(100%);
    opacity: 0;
    transition:
        transform 300ms var(--ease-reveal),
        opacity 300ms ease;
    pointer-events: none;
}

.project-card:hover .card-meta-overlay {
    transform: translateY(0);
    opacity: 1;
}

.meta-action {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--accent-primary);
}

.card-meta-overlay svg {
    stroke: var(--accent-primary);
    transition: transform 200ms ease;
}

.project-card:hover .card-meta-overlay svg {
    transform: translateX(4px);
}

.project-title {
    font-family: var(--font-mono);
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.project-tag {
    font-family: var(--font-mono);
    font-size: 12px;
    padding: 4px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--accent-primary);
    transition:
        background 200ms ease,
        border-color 200ms ease;
}

.project-card:hover .project-tag {
    border-color: rgba(0, 255, 136, 0.3);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--accent-primary);
    text-decoration: none;
    transition: gap 300ms var(--ease-snap);
}

.project-link:hover {
    gap: 12px;
}

/* ==========================================
   GITHUB SECTION
   ========================================== */
.github-content {
    display: grid;
    gap: 48px;
}

.github-repos {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.repo-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 24px;
    transition:
        border-color 300ms ease,
        box-shadow 300ms ease,
        transform 300ms var(--ease-smooth);
}

.repo-card:hover {
    border-color: var(--accent-secondary);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.1);
    transform: translateY(-2px);
}

.repo-name {
    font-family: var(--font-mono);
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.repo-description {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    min-height: 40px;
}

.repo-stats {
    display: flex;
    gap: 16px;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-muted);
}

.repo-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--accent-secondary);
    text-decoration: none;
    margin-top: 12px;
    transition: gap 300ms var(--ease-snap);
}

.repo-link:hover {
    gap: 10px;
}

/* GitHub Graph - Animated reveal */
.github-graph-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px;
    overflow: hidden;
}

.graph-title {
    font-family: var(--font-mono);
    font-size: 18px;
    margin-bottom: 24px;
    color: var(--text-primary);
}

#github-graph {
    width: 100%;
    border-radius: 8px;
    /* Clip-path animation controlled by JS */
}

/* ==========================================
   LINKEDIN SECTION - Research Note Style
   ========================================== */
.linkedin-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.linkedin-post {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 28px;
    text-decoration: none;
    display: block;
    position: relative;
    overflow: hidden;
    transition:
        border-color 300ms ease,
        box-shadow 300ms ease;
}

.linkedin-post:hover {
    border-color: #0077b5;
    box-shadow: 0 0 30px rgba(0, 119, 181, 0.15);
}

.post-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.4;
    position: relative;
    display: inline;
}

/* Underline animation */
.post-underline {
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 1px;
    background: #0077b5;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 400ms var(--ease-reveal);
}

.linkedin-post:hover .post-underline {
    transform: scaleX(1);
}

.post-date {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text-muted);
    display: block;
    margin-top: 8px;
}

/* Arrow nudge on hover */
.post-arrow {
    position: absolute;
    right: 28px;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0;
    transition:
        opacity 300ms ease,
        transform 300ms var(--ease-snap);
}

.post-arrow svg {
    stroke: #0077b5;
}

.linkedin-post:hover .post-arrow {
    opacity: 1;
    transform: translateY(-50%) translateX(4px);
}

/* ==========================================
   SKILLS SECTION
   ========================================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.skill-category {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 28px;
    transition:
        border-color 300ms ease,
        box-shadow 300ms ease;
}

.skill-category:hover {
    border-color: var(--border-glow);
    box-shadow: 0 0 30px rgba(0, 255, 136, 0.06);
}

.skill-category-title {
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-tag {
    font-size: 14px;
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    transition:
        background 200ms ease,
        border-color 200ms ease,
        color 200ms ease,
        transform 200ms var(--ease-snap);
    cursor: default;
}

.skill-tag:hover {
    background: var(--bg-primary);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-2px);
}

/* ==========================================
   FOOTER
   ========================================== */
footer {
    padding: 48px 0;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-text,
.footer-copyright {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text-muted);
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */
@media (max-width: 768px) {
    :root {
        --section-padding: 80px;
    }

    body {
        cursor: auto;
        /* Show default cursor on mobile */
    }

    .container {
        padding: 0 20px;
    }

    .projects-grid,
    .github-repos,
    .linkedin-grid {
        grid-template-columns: 1fr;
    }

    .hero-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .separator {
        display: none;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .card-meta-overlay {
        display: none;
    }
}

/* ==========================================
   LOADING STATES
   ========================================== */
.loading {
    opacity: 0.5;
    pointer-events: none;
}

/* ==========================================
   ACCESSIBILITY - Reduced Motion
   ========================================== */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .hero-tagline,
    .hero-meta,
    .hero-links {
        opacity: 1;
        animation: none;
    }

    .section-header.scroll-reveal {
        opacity: 1;
        transform: none;
    }

    .card-hidden {
        opacity: 1;
        transform: none;
    }
}