/* ============================================
   LIVING DATA — Design System
   A dark, cinematic, motion-led data-scientist portfolio.
   The site should feel like a data system that is ALIVE.

   Fonts:
     display/headings : Bricolage Grotesque (600/700/800)
     body / UI        : Geist (300/400/500/600)
     mono (metrics,
       indices, labels) : Geist Mono (400/500/600)  --font-mono
   ============================================ */

/* CSS owns the canonical @import (Geist Mono added alongside the others).
   HTML <link> may also load them; @import is harmless / duplicate-safe. */
@import url('https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:opsz,wght@12..96,600;12..96,700;12..96,800&family=Geist:wght@300;400;500;600&family=Geist+Mono:wght@400;500;600&display=swap');

:root {
    /* ---- BRAND COLOR TOKENS (exact) ---- */
    --color-bg: #08090D;            /* cinematic near-black */
    --color-bg-elev: #101218;       /* cards / raised */
    --color-bg-elev-2: #171A22;     /* deeper raised / inputs */
    --color-text: #F5F7FA;
    --color-text-secondary: #B8BFCC;
    --color-text-muted: #8C93A3;    /* ~4.9:1 on #08090D — passes WCAG AA */
    --color-accent: #3B82F6;        /* electric blue — primary */
    --color-accent-2: #22D3EE;      /* cyan — the "data glow" secondary */
    --color-accent-strong: #2563EB; /* deeper blue for pressed / edges */
    --color-accent-soft: rgba(59, 130, 246, 0.14);
    --color-accent-2-soft: rgba(34, 211, 238, 0.12);
    --color-error: #FB7185;         /* coral — ERROR states ONLY */

    --color-border: rgba(255, 255, 255, 0.07);
    --color-border-strong: rgba(255, 255, 255, 0.14);

    /* ---- Back-compat aliases (legacy var names still referenced anywhere) ---- */
    --color-bg-dark: var(--color-bg);
    --color-bg-darker: #050609;
    --color-bg-light: var(--color-bg-elev);
    --color-text-primary: var(--color-text);
    --color-accent-1: var(--color-accent);
    --color-accent-3: var(--color-accent);
    --color-accent-4: var(--color-accent-2);
    --color-accent-5: var(--color-accent);
    --color-accent-6: var(--color-accent-2);

    /* ---- The data gradient (canonical) ---- */
    --gradient-data: linear-gradient(135deg, #3B82F6 0%, #22D3EE 100%);
    --gradient-primary: var(--gradient-data);
    --gradient-secondary: linear-gradient(135deg, #22D3EE 0%, #3B82F6 100%);
    --gradient-tertiary: linear-gradient(135deg, #2563EB 0%, #22D3EE 100%);
    --gradient-accent: var(--gradient-data);
    --gradient-hero: linear-gradient(110deg, #60A5FA 0%, #3B82F6 42%, #22D3EE 100%);
    --gradient-rail: linear-gradient(to bottom, var(--color-accent-2) 0%, var(--color-accent) 45%, rgba(59, 130, 246, 0.12) 100%);

    /* ---- Spacing ---- */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;
    --spacing-2xl: 6.5rem;

    /* ---- Typography ---- */
    --font-primary: 'Geist', -apple-system, BlinkMacSystemFont, system-ui, 'Segoe UI', sans-serif;
    --font-display: 'Bricolage Grotesque', -apple-system, system-ui, sans-serif;
    --font-mono: 'Geist Mono', ui-monospace, 'SF Mono', 'Cascadia Code', Menlo, Consolas, monospace;

    --font-size-xs: 0.8125rem;   /* 13px */
    --font-size-sm: 1rem;        /* 16px */
    --font-size-md: 1.125rem;    /* 18px */
    --font-size-lg: 1.5rem;      /* 24px */
    --font-size-xl: 2.125rem;    /* 34px */
    --font-size-2xl: 2.75rem;    /* 44px */
    --font-size-3xl: 3.5rem;     /* 56px */
    --font-size-4xl: 6rem;       /* 96px — oversized hero name */

    /* ---- Radius ---- */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 26px;
    --radius-full: 9999px;

    /* ---- Layered shadows (real depth) ---- */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.45), 0 6px 18px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 4px 8px rgba(0, 0, 0, 0.5), 0 18px 38px rgba(0, 0, 0, 0.55);
    --shadow-xl: 0 8px 16px rgba(0, 0, 0, 0.55), 0 32px 70px rgba(0, 0, 0, 0.65);
    --shadow-glow: 0 0 0 1px var(--color-accent-soft), 0 14px 44px rgba(59, 130, 246, 0.32);
    --shadow-glow-cyan: 0 0 0 1px var(--color-accent-2-soft), 0 14px 44px rgba(34, 211, 238, 0.28);

    /* ---- Transitions ---- */
    --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.32s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.55s cubic-bezier(0.4, 0, 0.2, 1);

    /* ---- Z-Index Layers ---- */
    --z-bg: -1;
    --z-base: 1;
    --z-navbar: 100;
    --z-overlay: 500;
    --z-modal: 1000;
}

/* ============================================
   Reset & Base
   ============================================ */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

/* Skip-to-content link — visible only on keyboard focus */
.skip-link {
    position: absolute;
    top: -100px;
    left: 16px;
    z-index: var(--z-modal);
    padding: 0.75rem 1.25rem;
    background: var(--color-accent);
    color: #fff;
    font-weight: 600;
    border-radius: 8px;
    text-decoration: none;
    transition: top 0.2s ease;
}

.skip-link:focus {
    top: 16px;
    outline: 2px solid #fff;
    outline-offset: 2px;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    font-weight: 400;
    line-height: 1.7;
    color: var(--color-text-secondary);
    background-color: var(--color-bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    position: relative;
    min-height: 100vh;
}

/* ============================================
   Background Atmosphere (CSS-only)
   Deep radial blue/cyan washes + faint data grid.
   The hero canvas layers on top of this within the hero only.
   ============================================ */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: var(--z-bg);
    pointer-events: none;
    background:
        radial-gradient(120% 90% at 82% -10%, rgba(59, 130, 246, 0.22) 0%, rgba(59, 130, 246, 0.05) 34%, transparent 62%),
        radial-gradient(95% 80% at -12% 112%, rgba(34, 211, 238, 0.12) 0%, transparent 56%),
        var(--color-bg);
}

body::after {
    content: '';
    position: fixed;
    inset: 0;
    z-index: var(--z-bg);
    pointer-events: none;
    background-image:
        linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 64px 64px;
    -webkit-mask-image: radial-gradient(120% 100% at 50% 0%, #000 0%, rgba(0, 0, 0, 0.35) 55%, transparent 92%);
    mask-image: radial-gradient(120% 100% at 50% 0%, #000 0%, rgba(0, 0, 0, 0.35) 55%, transparent 92%);
}

::selection {
    background-color: rgba(34, 211, 238, 0.22);
    color: var(--color-text);
}

a {
    color: inherit;
}

/* ============================================
   Global focus-visible (a11y) — accent ring
   ============================================ */
:focus-visible {
    outline: 2px solid var(--color-accent-2);
    outline-offset: 3px;
    border-radius: 4px;
}

a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--color-accent-2);
    outline-offset: 4px;
}

input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--color-accent-2);
    outline-offset: 2px;
}

/* ============================================
   Utility / Layout primitives
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-2xl) 0;
    position: relative;
}

/* Auto-numbered section titles: a MONO index (01 / 02 ...) sits above a big
   left-aligned Bricolage heading with an accent rule. Counter increments per
   <section>, so the numbers are computed, not hand-coded. */
body { counter-reset: section-index; }
.section { counter-increment: section-index; }

.section-title {
    font-family: var(--font-display);
    font-size: var(--font-size-3xl);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.04;
    color: var(--color-text);
    text-align: left;
    margin-bottom: var(--spacing-xl);
    position: relative;
    display: block;
    padding-left: 1.15rem;
}

/* MONO index marker, e.g. "01 /" — sits above the heading text */
.section-title::after {
    content: counter(section-index, decimal-leading-zero) " /";
    display: block;
    order: -1;
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    font-weight: 500;
    letter-spacing: 0.18em;
    color: var(--color-accent-2);
    margin-bottom: 0.65rem;
    text-shadow: 0 0 18px rgba(34, 211, 238, 0.35);
}

.section-title::before {
    /* accent gradient rule running down the left edge of the heading */
    content: '';
    position: absolute;
    left: 0;
    top: 0.1em;
    bottom: 0.12em;
    width: 4px;
    border-radius: var(--radius-full);
    background: var(--gradient-data);
    box-shadow: 0 0 18px rgba(59, 130, 246, 0.45);
}

.section-subtitle {
    text-align: left;
    font-size: var(--font-size-md);
    color: var(--color-text-secondary);
    max-width: 640px;
    margin: calc(-1 * var(--spacing-lg)) 0 var(--spacing-lg);
}

/* ============================================
   Navigation — sticky blur + scroll-progress bar
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-navbar);
    padding: var(--spacing-md) 0;
    transition: background var(--transition-normal), padding var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
    background: transparent;
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    background: rgba(8, 9, 13, 0.72);
    backdrop-filter: blur(16px) saturate(140%);
    -webkit-backdrop-filter: blur(16px) saturate(140%);
    box-shadow: var(--shadow-md);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-sm) 0;
}

/* Thin gradient-data scroll-progress bar pinned to the very top of the nav.
   JS sets style.width as a scroll percentage. */
.scroll-progress {
    position: absolute;
    top: 0;
    left: 0;
    height: 2px;
    width: 0;
    background: var(--gradient-data);
    box-shadow: 0 0 10px rgba(34, 211, 238, 0.6);
    border-radius: 0 var(--radius-full) var(--radius-full) 0;
    transition: width 0.08s linear;
    z-index: 1;
    pointer-events: none;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-family: var(--font-display);
    font-size: var(--font-size-lg);
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.nav-brand:hover {
    color: var(--color-accent-2);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--color-text);
    margin: 3px 0;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

/* JS renders <a class="nav-link"> inside <li>; support both selectors. */
.nav-menu li a,
.nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
    position: relative;
    padding: var(--spacing-xs) 0;
}

.nav-menu li a i,
.nav-link i {
    margin-right: var(--spacing-xs);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.nav-menu li a:hover,
.nav-menu li a.active,
.nav-link:hover,
.nav-link.active {
    color: var(--color-text);
}

.nav-menu li a:hover i,
.nav-link:hover i {
    opacity: 1;
}

.nav-menu li a::after,
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    border-radius: var(--radius-full);
    background: var(--gradient-data);
    transition: width var(--transition-normal);
}

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

/* ============================================
   Hero Section — full viewport, live neural canvas
   ============================================ */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    position: relative;
    padding-top: var(--spacing-2xl);
    overflow: hidden;
}

/* Full-bleed neural-network canvas behind the hero content.
   JS animates it (initNeuralCanvas). A soft radial vignette/mask keeps the
   text column legible. */
#neural-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    display: block;
    pointer-events: none;
    /* fade the constellation toward the lower-left where the text sits */
    -webkit-mask-image: radial-gradient(125% 115% at 72% 32%, #000 0%, rgba(0, 0, 0, 0.55) 48%, transparent 86%);
    mask-image: radial-gradient(125% 115% at 72% 32%, #000 0%, rgba(0, 0, 0, 0.55) 48%, transparent 86%);
}

/* Vignette layer over the canvas so the name/summary stay readable. */
.hero-section::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    background:
        radial-gradient(80% 90% at 18% 50%, rgba(8, 9, 13, 0.92) 0%, rgba(8, 9, 13, 0.45) 38%, transparent 70%),
        linear-gradient(to bottom, transparent 60%, var(--color-bg) 100%);
}

.hero-section .container {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.82fr);
    align-items: center;
    gap: var(--spacing-2xl);
    width: 100%;
    position: relative;
    z-index: 2;
}

.hero-content {
    text-align: left;
    position: relative;
    z-index: var(--z-base);
    max-width: 100%;
}

/* Hero portrait */
.hero-portrait {
    position: relative;
    justify-self: center;
    z-index: var(--z-base);
    animation: fadeInUp 0.7s ease 0.45s both;
}

.hero-portrait::before {
    content: '';
    position: absolute;
    inset: -18%;
    background:
        radial-gradient(circle at 50% 36%, rgba(34, 211, 238, 0.28), transparent 64%),
        radial-gradient(circle at 50% 60%, rgba(59, 130, 246, 0.26), transparent 70%);
    filter: blur(30px);
    z-index: -1;
    pointer-events: none;
}

.hero-portrait-frame {
    position: relative;
    width: min(390px, 78vw);
    aspect-ratio: 1 / 1;
    border-radius: 28px;
    overflow: hidden;
    background: var(--color-bg-elev);
    border: 1px solid var(--color-border-strong);
    box-shadow:
        0 36px 90px -26px rgba(0, 0, 0, 0.7),
        0 0 0 1px rgba(34, 211, 238, 0.12),
        inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.hero-portrait-frame::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(180deg, transparent 52%, rgba(8, 9, 13, 0.6) 100%);
    pointer-events: none;
}

.hero-portrait-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    display: block;
    transition: transform var(--transition-slow);
}

.hero-portrait:hover .hero-portrait-frame img {
    transform: scale(1.04);
}

.hero-greeting {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    color: var(--color-accent-2);
    font-weight: 500;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
    animation: fadeInUp 0.6s ease both;
}

.hero-name {
    font-family: var(--font-display);
    /* Oversized but sized to fit 2 clean lines (clamp + balance, no orphan). */
    font-size: clamp(2.75rem, 6.4vw, 5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
    line-height: 1.02;
    text-wrap: balance;
    animation: fadeInUp 0.6s ease 0.1s both;
}

.hero-name span {
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.hero-title {
    font-family: var(--font-display);
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: var(--spacing-sm);
    animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-tagline {
    font-size: var(--font-size-md);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.6s ease 0.3s both;
}

.hero-summary {
    font-size: var(--font-size-md);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 0 var(--spacing-lg);
    line-height: 1.8;
    animation: fadeInUp 0.6s ease 0.4s both;
}

/* Count-up stat chips — mono numerals for the computational texture. */
.hero-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(0, 1fr));
    gap: var(--spacing-sm);
    margin: var(--spacing-xl) 0;
    max-width: 540px;
    animation: fadeInUp 0.6s ease 0.5s both;
}

.highlight-item {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent), var(--color-bg-elev);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.highlight-item::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(80% 120% at 0% 0%, var(--color-accent-2-soft), transparent 55%);
    opacity: 0;
    transition: opacity var(--transition-normal);
    pointer-events: none;
}

.highlight-item:hover {
    transform: translateY(-4px);
    border-color: var(--color-border-strong);
    box-shadow: var(--shadow-glow);
}

.highlight-item:hover::before {
    opacity: 1;
}

.highlight-item i {
    font-size: var(--font-size-xl);
    min-width: 40px;
    color: var(--color-accent-2);
    text-shadow: 0 0 18px rgba(34, 211, 238, 0.4);
    position: relative;
}

.highlight-item span {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
    position: relative;
    line-height: 1.4;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-start;
    flex-wrap: wrap;
    margin: var(--spacing-xl) 0;
    animation: fadeInUp 0.6s ease 0.6s both;
}

.btn {
    padding: 0.85rem var(--spacing-lg);
    border-radius: var(--radius-full);
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: var(--font-size-sm);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), background var(--transition-normal), border-color var(--transition-normal), color var(--transition-normal);
    cursor: pointer;
    border: 1px solid transparent;
    line-height: 1;
}

.btn-primary {
    background: var(--gradient-data);
    color: #04121f;
    font-weight: 600;
    box-shadow: 0 6px 22px rgba(34, 211, 238, 0.32);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 34px rgba(34, 211, 238, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.02);
    color: var(--color-text);
    border-color: var(--color-border-strong);
}

.btn-secondary:hover {
    background: var(--color-accent-soft);
    border-color: var(--color-accent-2);
    color: var(--color-text);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow-cyan);
}

.hero-social {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-start;
    margin: var(--spacing-xl) 0;
    animation: fadeInUp 0.6s ease 0.7s both;
}

.social-link {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--color-bg-elev);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
    transition: transform var(--transition-normal), color var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
    text-decoration: none;
}

.social-link:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent-2);
    color: var(--color-accent-2);
    box-shadow: var(--shadow-glow-cyan);
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xs);
    color: var(--color-text-muted);
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    letter-spacing: 0.14em;
    text-transform: uppercase;
    margin-top: var(--spacing-2xl);
    animation: bounce 2.4s infinite;
}

.scroll-indicator i {
    font-size: var(--font-size-md);
    color: var(--color-accent-2);
}

.hero-decoration {
    display: none;
}

/* ============================================
   About Section — asymmetric prose + stat panel
   ============================================ */
.about-section {
    background: transparent;
}

.about-content {
    display: grid;
    grid-template-columns: minmax(0, 1.7fr) minmax(280px, 1fr);
    gap: var(--spacing-xl);
    align-items: start;
    margin-bottom: var(--spacing-md);
}

.about-text {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.about-text p {
    font-size: var(--font-size-md);
    line-height: 1.85;
    color: var(--color-text-secondary);
}

.about-text p:first-child {
    font-size: var(--font-size-lg);
    line-height: 1.6;
    color: var(--color-text);
    font-weight: 500;
}

/* Stat panel — single-column stack, glass depth */
.about-stats {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.stat-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent), var(--color-bg-elev);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: left;
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-data);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-6px);
    border-color: var(--color-border-strong);
    box-shadow: var(--shadow-glow);
}

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

.stat-card i {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent-2);
    text-shadow: 0 0 22px rgba(34, 211, 238, 0.35);
}

.stat-value {
    font-family: var(--font-mono);
    font-size: var(--font-size-2xl);
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--color-text);
    display: block;
    margin-bottom: var(--spacing-xs);
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

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

.about-actions {
    text-align: left;
    margin-top: var(--spacing-sm);
}

/* ============================================
   Experience — single LEFT-RAIL timeline (draw effect)
   ============================================ */
.timeline {
    position: relative;
    max-width: 940px;
    margin: 0;
}

/* The rail: a full-height track plus an illuminated "drawn" fill that grows.
   ::before = dim track, ::after = the bright gradient draw (scaled up as items
   come into view). */
.timeline::before {
    content: '';
    position: absolute;
    left: 25px;
    top: 0;
    width: 2px;
    height: 100%;
    background: rgba(59, 130, 246, 0.14);
    border-radius: var(--radius-full);
}

.timeline::after {
    content: '';
    position: absolute;
    left: 25px;
    top: 0;
    width: 2px;
    height: 100%;
    background: var(--gradient-rail);
    border-radius: var(--radius-full);
    box-shadow: 0 0 16px rgba(34, 211, 238, 0.45);
    transform-origin: top;
    transform: scaleY(0);
    transition: transform 1.1s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Draw the rail once any timeline item has entered the viewport.
   Supports both the contract hook (.in-view) and the existing JS hook
   (.reveal.active). The :has() makes the rail illuminate as items appear. */
.timeline:has(.timeline-item.in-view)::after,
.timeline:has(.timeline-item.reveal.active)::after {
    transform: scaleY(1);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-xl);
    padding-left: 80px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-empty {
    display: none;
}

.timeline-content {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.025), transparent), var(--color-bg-elev);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    position: relative;
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.timeline-content::before {
    /* little connector notch from rail to card */
    content: '';
    position: absolute;
    left: -28px;
    top: 24px;
    width: 28px;
    height: 1px;
    background: linear-gradient(to right, var(--color-accent), transparent);
    opacity: 0.5;
}

.timeline-content:hover {
    transform: translateY(-5px);
    border-color: var(--color-border-strong);
    box-shadow: var(--shadow-glow);
}

.timeline-icon {
    position: absolute;
    left: 26px;
    top: 0;
    transform: translateX(-50%);
    width: 50px;
    height: 50px;
    border-radius: var(--radius-full);
    background: var(--gradient-data);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #04121f;
    font-size: var(--font-size-lg);
    box-shadow: 0 0 0 4px var(--color-bg), 0 0 0 5px var(--color-border);
    z-index: 2;
    transition: box-shadow var(--transition-slow), transform var(--transition-normal);
}

/* The node lights up when its item scrolls into view (draw effect). */
.timeline-item.in-view .timeline-icon,
.timeline-item.reveal.active .timeline-icon {
    box-shadow: 0 0 0 4px var(--color-bg), 0 0 0 5px rgba(34, 211, 238, 0.4), 0 0 26px rgba(34, 211, 238, 0.6);
}

.experience-header {
    margin-bottom: var(--spacing-md);
}

.experience-title {
    font-family: var(--font-display);
    font-size: var(--font-size-lg);
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.experience-company {
    font-size: var(--font-size-md);
    color: var(--color-accent-2);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.experience-type {
    color: var(--color-text-muted);
    font-weight: 400;
}

.experience-period {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    letter-spacing: 0.04em;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.experience-description {
    margin: var(--spacing-md) 0;
    color: var(--color-text-secondary);
}

.experience-responsibilities {
    list-style: none;
    margin: var(--spacing-md) 0;
}

.experience-responsibilities li {
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    position: relative;
    color: var(--color-text-secondary);
}

.experience-responsibilities li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-accent-2);
}

.experience-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
}

.tech-tag {
    padding: 0.35rem var(--spacing-sm);
    background: var(--color-bg-elev-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    transition: border-color var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
}

.tech-tag:hover {
    border-color: var(--color-accent-2);
    color: var(--color-text);
    background: var(--color-accent-2-soft);
}

/* ============================================
   Skills Section
   ============================================ */
.skills-section {
    background: transparent;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin: 0;
}

.skill-category {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.025), transparent), var(--color-bg-elev);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.skill-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 3px;
    background: var(--gradient-data);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform var(--transition-normal);
}

.skill-category:hover {
    transform: translateY(-8px);
    border-color: var(--color-border-strong);
    box-shadow: var(--shadow-glow);
}

.skill-category:hover::before {
    transform: scaleY(1);
}

.skill-category-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.skill-category-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    color: var(--color-accent-2);
    background: var(--color-accent-2-soft);
    border: 1px solid var(--color-border);
}

.skill-category-title {
    font-family: var(--font-display);
    font-size: var(--font-size-lg);
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--color-text);
}

.skill-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.skill-tag {
    padding: 0.4rem var(--spacing-sm);
    background: var(--color-bg-elev-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    transition: transform var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

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

/* ============================================
   Projects Section — BENTO grid
   ============================================ */
.projects-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* ============================================
   Logo chips — real company/institution logos with monogram fallback.
   The monogram (.logo-fallback) is the default; JS adds .has-logo when a
   real logo resolves, swapping to a white chip with the contained image.
   ============================================ */
.logo-chip {
    position: relative;
    overflow: hidden;
}

.logo-chip .logo-fallback {
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 0.78rem;
    letter-spacing: 0.01em;
    line-height: 1;
    text-transform: uppercase;
}

.logo-chip .logo-img {
    display: none;
    width: 72%;
    height: 72%;
    object-fit: contain;
}

.logo-chip.has-logo {
    background: #fff !important;
    color: #04121f;
}

.logo-chip.has-logo .logo-fallback {
    display: none;
}

.logo-chip.has-logo .logo-img {
    display: block;
}

/* (Legacy .project-card / bento rules removed — superseded by the
   "Project dossiers" redesign: .project-feature + .project-panel.
   .project-stats* below is retained; the featured visual reuses it.) */
.project-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    position: relative;
}

.project-stat {
    text-align: left;
    min-width: 0;
}

.project-stat-value {
    display: block;
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--color-accent-2);
    font-size: var(--font-size-md);
    letter-spacing: -0.01em;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
    text-shadow: 0 0 18px rgba(34, 211, 238, 0.25);
}

.project-stat-label {
    display: block;
    margin-top: 2px;
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    line-height: 1.3;
    letter-spacing: 0.02em;
    color: var(--color-text-muted);
}

/* ============================================
   Projects — "Project dossiers" redesign
   Wide featured showcase + terminal-style panel grid.
   ============================================ */
.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

/* ---- Featured showcase ---- */
.project-feature {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: var(--spacing-xl);
    align-items: stretch;
    text-decoration: none;
    color: inherit;
    position: relative;
    overflow: hidden;
    padding: var(--spacing-xl);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-xl);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.025), transparent), var(--color-bg-elev);
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.project-feature::before {
    content: '';
    position: absolute;
    inset: 0 0 auto 0;
    height: 2px;
    background: var(--gradient-data);
    opacity: 0.85;
}

.project-feature:hover {
    transform: translateY(-4px);
    border-color: rgba(59, 130, 246, 0.4);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.project-feature__body {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-self: center;
}

.project-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-accent-2);
}

.project-eyebrow__dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--color-accent-2);
    box-shadow: 0 0 10px var(--color-accent-2);
    animation: pulseDot 2s ease-in-out infinite;
}

.project-feature__title {
    font-family: var(--font-display);
    font-size: var(--font-size-2xl);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.02em;
    color: var(--color-text);
}

.project-feature__desc {
    color: var(--color-text-secondary);
    font-size: var(--font-size-md);
    line-height: 1.7;
    max-width: 54ch;
}

.project-feature__cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.25rem;
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--color-accent);
}

.project-feature__cta i {
    transition: transform var(--transition-fast);
}

.project-feature:hover .project-feature__cta i {
    transform: translateX(5px);
}

.project-feature__visual {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    padding: var(--spacing-lg);
    min-height: 280px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: var(--spacing-lg);
    background:
        radial-gradient(120% 120% at 80% 0%, rgba(34, 211, 238, 0.14), transparent 50%),
        radial-gradient(100% 120% at 0% 100%, var(--color-accent-soft), transparent 55%),
        var(--color-bg-elev-2);
}

.project-feature__visual::before {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 28px 28px;
    -webkit-mask-image: radial-gradient(120% 100% at 70% 18%, #000, transparent 78%);
    mask-image: radial-gradient(120% 100% at 70% 18%, #000, transparent 78%);
}

.project-feature__img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
    transition: transform var(--transition-slow);
}

.project-feature:hover .project-feature__img {
    transform: scale(1.04);
}

/* Legibility scrim over the image so the icon + metrics stay readable */
.project-feature__visual::after {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    background: linear-gradient(165deg, rgba(8, 9, 13, 0.35) 0%, rgba(8, 9, 13, 0.62) 55%, rgba(8, 9, 13, 0.85) 100%);
}

.project-feature__icon {
    position: relative;
    z-index: 2;
    width: 84px;
    height: 84px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-3xl);
    color: #fff;
    background: var(--gradient-data);
    box-shadow: var(--shadow-glow);
}

.project-feature__visual .project-stats {
    position: relative;
    z-index: 2;
    border-top: none;
    margin: 0;
    padding: 0;
}

/* ---- Panel grid ---- */
.projects-rest {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--spacing-lg);
}

.project-panel {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent), var(--color-bg-elev);
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.project-panel:hover {
    transform: translateY(-4px);
    border-color: rgba(59, 130, 246, 0.4);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.project-panel__cover {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--color-bg-elev-2);
}

.project-panel__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-slow);
}

.project-panel:hover .project-panel__img {
    transform: scale(1.06);
}

.project-panel__cover::after {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(180deg, rgba(8, 9, 13, 0) 45%, rgba(8, 9, 13, 0.9) 100%);
}

.project-panel__file {
    position: absolute;
    bottom: 0.7rem;
    left: 0.85rem;
    z-index: 1;
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    max-width: calc(100% - 3.6rem);
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.project-panel__dot {
    flex: 0 0 auto;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-accent-2);
    box-shadow: 0 0 8px var(--color-accent-2);
}

.project-panel__arrow {
    position: absolute;
    top: 0.7rem;
    right: 0.8rem;
    z-index: 1;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(8, 9, 13, 0.55);
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
    color: var(--color-text);
    font-size: 0.8rem;
    transition: transform var(--transition-fast), color var(--transition-fast);
}

.project-panel:hover .project-panel__arrow {
    color: var(--color-accent-2);
    transform: translate(2px, -2px);
}

.project-panel__content {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    padding: var(--spacing-md);
    flex: 1 1 auto;
}

.project-panel__title {
    font-family: var(--font-display);
    font-size: var(--font-size-md);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text);
}

.project-panel__desc {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.project-panel__metrics {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem 1rem;
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.project-panel__metrics .pm b {
    color: var(--color-accent-2);
    font-weight: 600;
}

.project-panel__content .project-tags {
    margin-top: auto;
}

@keyframes pulseDot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.35; }
}

/* Reveal (motion only; reduced-motion users see them immediately) */
@media (prefers-reduced-motion: no-preference) {
    .project-feature,
    .project-panel {
        opacity: 0;
        transform: translateY(28px);
        transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
        will-change: opacity, transform;
    }
    .project-feature.in-view,
    .project-panel.in-view {
        opacity: 1;
        transform: none;
    }
    .projects-rest .project-panel:nth-child(2) { transition-delay: 0.08s; }
    .projects-rest .project-panel:nth-child(3) { transition-delay: 0.16s; }
    .projects-rest .project-panel:nth-child(4) { transition-delay: 0.24s; }
    .projects-rest .project-panel:nth-child(5) { transition-delay: 0.32s; }
}

@media (max-width: 900px) {
    .project-feature {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    .project-feature__visual {
        order: -1;
        min-height: 200px;
    }
    .projects-rest {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 560px) {
    .project-feature {
        padding: var(--spacing-lg);
    }
    .projects-rest {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Education Section
   ============================================ */
.education-section {
    background: transparent;
}

.subsection-title {
    font-family: var(--font-display);
    font-size: var(--font-size-2xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-text);
    text-align: left;
    margin: var(--spacing-2xl) 0 var(--spacing-xl);
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.education-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.025), transparent), var(--color-bg-elev);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.education-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 3px;
    background: var(--gradient-data);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform var(--transition-normal);
}

.education-card:hover {
    transform: translateY(-6px);
    border-color: var(--color-border-strong);
    box-shadow: var(--shadow-glow);
}

.education-card:hover::before {
    transform: scaleY(1);
}

.education-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-accent-2);
    background: var(--color-accent-2-soft);
    border: 1px solid var(--color-border);
}

.education-degree {
    font-family: var(--font-display);
    font-size: var(--font-size-lg);
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.education-institution {
    font-size: var(--font-size-md);
    color: var(--color-accent-2);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.education-period {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    letter-spacing: 0.04em;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.education-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.education-achievements {
    list-style: none;
}

.education-achievements li {
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    position: relative;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.education-achievements li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-accent-2);
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.certification-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.025), transparent), var(--color-bg-elev);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: left;
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.certification-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-accent-2);
    box-shadow: var(--shadow-glow-cyan);
}

.certification-icon {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent-2);
    text-shadow: 0 0 20px rgba(34, 211, 238, 0.3);
}

.certification-title {
    font-family: var(--font-display);
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.certification-issuer {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
}

.certification-date {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    letter-spacing: 0.04em;
    color: var(--color-text-muted);
}

/* ============================================
   Contact Section
   ============================================ */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.6fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-info-item {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.025), transparent), var(--color-bg-elev);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
    text-decoration: none;
    box-shadow: var(--shadow-sm);
}

.contact-info-item:hover {
    transform: translateX(8px);
    border-color: var(--color-accent-2);
    box-shadow: var(--shadow-glow-cyan);
}

.contact-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
    color: var(--color-accent-2);
    background: var(--color-accent-2-soft);
    border: 1px solid var(--color-border);
}

.contact-info-content .contact-info-label {
    display: block;
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

.contact-info-content p {
    font-size: var(--font-size-md);
    color: var(--color-text);
}

.contact-form-wrapper {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.025), transparent), var(--color-bg-elev);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.form-group label i {
    color: var(--color-accent-2);
}

.form-group input,
.form-group textarea {
    padding: 0.8rem var(--spacing-sm);
    background: var(--color-bg-elev-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    transition: background var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    background: var(--color-bg-elev-2);
    border-color: var(--color-accent-2);
    box-shadow: 0 0 0 3px var(--color-accent-2-soft);
}

.form-group textarea {
    resize: vertical;
    min-height: 130px;
}

.form-submit {
    padding: 0.9rem var(--spacing-lg);
    background: var(--gradient-data);
    border: none;
    border-radius: var(--radius-full);
    color: #04121f;
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    box-shadow: 0 6px 22px rgba(34, 211, 238, 0.32);
}

.form-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(34, 211, 238, 0.5);
}

.form-submit:disabled {
    opacity: 0.7;
    cursor: progress;
}

.form-message {
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-top: var(--spacing-md);
    display: none;
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
}

.form-message.success {
    background: var(--color-accent-2-soft);
    border: 1px solid var(--color-accent-2);
    color: var(--color-text);
}

.form-message.error {
    background: rgba(251, 113, 133, 0.12);
    border: 1px solid rgba(251, 113, 133, 0.4);
    color: var(--color-error);
}

.contact-social {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-start;
    margin-top: var(--spacing-xl);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--color-bg-darker);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(34, 211, 238, 0.4), transparent);
}

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

.footer-tagline {
    font-family: var(--font-display);
    font-size: var(--font-size-md);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.footer-copyright {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    letter-spacing: 0.04em;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.footer-links {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

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

.footer-links a:hover {
    color: var(--color-accent-2);
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: var(--radius-full);
    background: var(--gradient-data);
    border: none;
    color: #04121f;
    font-size: var(--font-size-lg);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal), transform var(--transition-normal), box-shadow var(--transition-normal);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-navbar);
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 34px rgba(34, 211, 238, 0.5);
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(28px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-8px);
    }
}

/* ============================================
   Scroll Reveal — hidden initial -> .in-view visible
   The contract hook is .in-view. The existing main.js adds
   .reveal + .active, so both are supported as the visible state.
   ============================================ */
.reveal,
.section,
.timeline-item,
.skill-category,
.education-card,
.certification-card {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: opacity, transform;
}

/* Visible / animated state (both hooks) */
.reveal.active,
.in-view,
.section.in-view,
.timeline-item.in-view,
.skill-category.in-view,
.education-card.in-view,
.certification-card.in-view {
    opacity: 1;
    transform: translateY(0) translateX(0);
}

/* Stagger within grids/groups via nth-child delay */
.skills-grid .skill-category:nth-child(2),
.education-grid .education-card:nth-child(2),
.certifications-grid .certification-card:nth-child(2) {
    transition-delay: 0.08s;
}

.skills-grid .skill-category:nth-child(3),
.education-grid .education-card:nth-child(3),
.certifications-grid .certification-card:nth-child(3) {
    transition-delay: 0.16s;
}

.skills-grid .skill-category:nth-child(4),
.certifications-grid .certification-card:nth-child(4) {
    transition-delay: 0.24s;
}

.timeline-item:nth-child(2) { transition-delay: 0.1s; }
.timeline-item:nth-child(3) { transition-delay: 0.2s; }

/* The hero/section atmosphere never starts hidden — the hero animates via its
   own keyframes, so don't let the generic .section rule blank it out. */
#hero,
.hero-section {
    opacity: 1;
    transform: none;
    transition: none;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 968px) {
    :root {
        --font-size-4xl: 3.75rem;
        --font-size-3xl: 2.75rem;
        --font-size-2xl: 2.25rem;
        --font-size-xl: 1.875rem;
    }

    .nav-toggle {
        display: flex;
    }

    /* Mobile nav drawer */
    .nav-menu {
        position: fixed;
        top: 68px;
        left: -100%;
        width: 100%;
        max-width: 320px;
        height: calc(100vh - 68px);
        background: rgba(8, 9, 13, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-right: 1px solid var(--color-border);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-lg);
        transition: left var(--transition-normal);
        box-shadow: var(--shadow-xl);
        gap: var(--spacing-md);
    }

    .nav-menu.active {
        left: 0;
    }

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

    /* Timeline rail stays left; tighten card offset */
    .timeline-item {
        padding-left: 64px;
    }

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

    .education-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-4xl: 3rem;
        --font-size-3xl: 2.25rem;
        --spacing-xl: 3rem;
        --spacing-2xl: 4.5rem;
    }

    .section {
        padding: var(--spacing-xl) 0;
    }

    .hero-section {
        min-height: auto;
        padding: calc(var(--spacing-2xl) + 68px) 0 var(--spacing-2xl);
    }

    /* Hero stacks: portrait above text */
    .hero-section .container {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
        justify-items: center;
        text-align: center;
    }

    .hero-section::before {
        background:
            radial-gradient(120% 60% at 50% 70%, rgba(8, 9, 13, 0.92) 0%, rgba(8, 9, 13, 0.4) 45%, transparent 75%),
            linear-gradient(to bottom, transparent 55%, var(--color-bg) 100%);
    }

    .hero-content {
        text-align: center;
        order: 2;
    }

    .hero-cta,
    .hero-social,
    .hero-highlights,
    .scroll-indicator {
        justify-content: center;
        align-items: center;
    }

    .scroll-indicator {
        align-self: center;
    }

    .hero-portrait {
        order: 1;
    }

    .hero-portrait-frame {
        width: min(260px, 64vw);
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }

    .certifications-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }

    .hero-highlights {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-4xl: 2.5rem;
        --font-size-3xl: 1.9rem;
        --font-size-2xl: 1.6rem;
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

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

    .certifications-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Reduced Motion (a11y)
   Disable all transforms/animations/transitions, show content immediately,
   neutralize the timeline draw and the neural canvas.
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        animation-delay: 0ms !important;
        transition-duration: 0.001ms !important;
        transition-delay: 0ms !important;
        scroll-behavior: auto !important;
    }

    /* Show every reveal target immediately, regardless of which hook ships. */
    .reveal,
    .section,
    .timeline-item,
    .skill-category,
    .project-feature,
    .project-panel,
    .education-card,
    .certification-card {
        opacity: 1 !important;
        transform: none !important;
    }

    .scroll-indicator {
        animation: none;
    }

    /* Neutralize the timeline draw — show the lit rail statically. */
    .timeline::after {
        transform: scaleY(1) !important;
        transition: none !important;
    }

    /* Hide the live neural canvas; the CSS atmosphere remains. */
    #neural-canvas {
        display: none;
    }

    /* Neutralize hover translate/scale lifts */
    .highlight-item:hover,
    .stat-card:hover,
    .timeline-content:hover,
    .skill-category:hover,
    .skill-tag:hover,
    .project-feature:hover,
    .project-panel:hover,
    .education-card:hover,
    .certification-card:hover,
    .social-link:hover,
    .btn-primary:hover,
    .btn-secondary:hover,
    .form-submit:hover,
    .contact-info-item:hover,
    .hero-portrait:hover .hero-portrait-frame img,
    .back-to-top:hover {
        transform: none;
    }

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

    .skill-category:hover::before,
    .education-card:hover::before {
        transform: scaleY(1);
    }
}