/* ==========================================================================
   Jordan STIEN - Portfolio v2
   Palette: indigo
   ========================================================================== */

/* ---------- 1. Tokens / Variables ---------- */
:root {
    /* Backgrounds (dark default) */
    --bg-primary: #0a0a1a;
    --bg-secondary: #0f0f2e;
    --bg-tertiary: #14143a;
    --bg-card: rgba(15, 15, 46, 0.6);
    --bg-card-hover: rgba(25, 25, 60, 0.85);
    --bg-overlay: rgba(10, 10, 26, 0.85);

    /* Accent gradient (indigo → violet → cyan) */
    --accent-start: #6366f1;
    --accent-mid: #8b5cf6;
    --accent-end: #06b6d4;
    --accent-light: #a78bfa;
    --gradient-main: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #06b6d4 100%);
    --gradient-soft: linear-gradient(135deg, rgba(99,102,241,.15) 0%, rgba(139,92,246,.15) 50%, rgba(6,182,212,.15) 100%);
    --gradient-text: linear-gradient(135deg, #818cf8 0%, #c084fc 50%, #22d3ee 100%);
    --gradient-btn: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);

    /* Text */
    --text-primary: #ffffff;
    --text-secondary: #e2e8f0;
    --text-muted: #94a3b8;
    --text-faint: #64748b;

    /* Borders */
    --border-color: rgba(99, 102, 241, 0.2);
    --border-glow: rgba(139, 92, 246, 0.4);
    --border-soft: rgba(255, 255, 255, 0.06);

    /* Glass */
    --glass-bg: rgba(15, 15, 46, 0.4);
    --glass-border: rgba(99, 102, 241, 0.15);
    --glass-blur: 20px;

    /* Shadows */
    --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.15);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-card-hover: 0 16px 48px rgba(99, 102, 241, 0.25);
    --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.2);

    /* Typo */
    --font-body: 'Inter', system-ui, -apple-system, sans-serif;
    --font-heading: 'Space Grotesk', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Sizing */
    --container-width: 1240px;
    --container-padding: clamp(1rem, 4vw, 2rem);
    --section-py: clamp(4rem, 10vw, 7rem);

    /* Radius */
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-pill: 999px;

    /* Transition */
    --t-fast: 0.15s ease;
    --t-norm: 0.3s ease;
    --t-slow: 0.5s ease;

    /* Header */
    --header-h: 72px;
}

/* Light theme overrides */
[data-theme="light"] {
    --bg-primary: #fafbff;
    --bg-secondary: #f1f3fb;
    --bg-tertiary: #e7eaf7;
    --bg-card: rgba(255, 255, 255, 0.7);
    --bg-card-hover: rgba(255, 255, 255, 0.95);
    --bg-overlay: rgba(250, 251, 255, 0.85);

    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    --text-faint: #94a3b8;

    --border-color: rgba(99, 102, 241, 0.18);
    --border-glow: rgba(139, 92, 246, 0.35);
    --border-soft: rgba(15, 23, 42, 0.06);

    --glass-bg: rgba(255, 255, 255, 0.6);
    --glass-border: rgba(99, 102, 241, 0.15);

    --shadow-card: 0 8px 32px rgba(99, 102, 241, 0.08);
    --shadow-card-hover: 0 16px 48px rgba(99, 102, 241, 0.18);
    --shadow-soft: 0 4px 20px rgba(99, 102, 241, 0.08);
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 16px;
    overflow-x: hidden;
    transition: background var(--t-norm), color var(--t-norm);
    min-height: 100vh;
}
img, svg { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
a { color: inherit; text-decoration: none; transition: color var(--t-fast); }
ul, ol { list-style: none; }
input, textarea { font: inherit; }

::selection { background: var(--accent-mid); color: white; }

/* ---------- 3. Utility ---------- */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

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

/* ---------- 4. Ambient background ---------- */
.ambient-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}
.ambient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 20s ease-in-out infinite;
}
.ambient-orb--1 {
    width: 500px;
    height: 500px;
    top: -150px;
    left: -100px;
    background: radial-gradient(circle, var(--accent-start), transparent 70%);
}
.ambient-orb--2 {
    width: 600px;
    height: 600px;
    bottom: -200px;
    right: -150px;
    background: radial-gradient(circle, var(--accent-mid), transparent 70%);
    animation-delay: -5s;
}
.ambient-orb--3 {
    width: 400px;
    height: 400px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, var(--accent-end), transparent 70%);
    opacity: 0.3;
    animation-delay: -10s;
}
[data-theme="light"] .ambient-orb { opacity: 0.18; }

.ambient-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(99, 102, 241, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.06) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 0%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 75%);
}
[data-theme="light"] .ambient-grid {
    background-image:
        linear-gradient(rgba(99, 102, 241, 0.07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.07) 1px, transparent 1px);
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(50px, -30px) scale(1.05); }
    66% { transform: translate(-30px, 40px) scale(0.95); }
}

main, footer, .header { position: relative; z-index: 1; }

/* ---------- 5. Header ---------- */
.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--header-h);
    z-index: 100;
    background: var(--bg-overlay);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: border-color var(--t-norm), background var(--t-norm);
}
.header.is-scrolled {
    border-bottom-color: var(--border-soft);
}

.header__inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.header__brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-heading);
    color: var(--text-primary);
}
.header__brand-mark {
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    border-radius: var(--radius-sm);
    background: var(--gradient-btn);
    color: white;
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 0.02em;
    box-shadow: var(--shadow-glow);
}
.header__brand-name {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
}
.header__brand-name strong { color: var(--text-primary); }

.nav {
    display: flex;
    gap: 2rem;
    align-items: center;
}
.nav a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
    position: relative;
}
.nav a:hover { color: var(--text-primary); }
.nav a::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0; right: 0;
    height: 2px;
    background: var(--gradient-main);
    border-radius: 2px;
    transform: scaleX(0);
    transition: transform var(--t-fast);
    transform-origin: left;
}
.nav a:hover::after, .nav a.is-active::after { transform: scaleX(1); }
.nav a.is-active { color: var(--text-primary); }

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

.lang-toggle, .theme-toggle, .menu-toggle {
    height: 38px;
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    border: 1px solid var(--border-soft);
    transition: all var(--t-fast);
}
.lang-toggle:hover, .theme-toggle:hover {
    border-color: var(--border-color);
    color: var(--text-primary);
    background: var(--glass-bg);
}

.lang-toggle {
    padding: 0 0.75rem;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    gap: 0.25rem;
}
.lang-toggle__current { color: var(--text-primary); }
.lang-toggle__sep { color: var(--text-faint); }
.lang-toggle__other { color: var(--text-muted); }

.theme-toggle {
    width: 38px;
    position: relative;
}
.theme-toggle__icon {
    width: 18px;
    height: 18px;
    position: absolute;
    transition: opacity var(--t-fast), transform var(--t-norm);
}
.theme-toggle__icon--sun { opacity: 1; transform: rotate(0); }
.theme-toggle__icon--moon { opacity: 0; transform: rotate(90deg); }
[data-theme="light"] .theme-toggle__icon--sun { opacity: 0; transform: rotate(-90deg); }
[data-theme="light"] .theme-toggle__icon--moon { opacity: 1; transform: rotate(0); }

.menu-toggle {
    display: none;
    width: 38px;
    flex-direction: column;
    gap: 4px;
    padding: 0 8px;
}
.menu-toggle span {
    width: 18px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: transform var(--t-fast), opacity var(--t-fast);
}
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 6. Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.5rem;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all var(--t-fast);
    border: 1px solid transparent;
    line-height: 1;
}
.btn--primary {
    background: var(--gradient-btn);
    color: white;
    box-shadow: 0 4px 24px rgba(99, 102, 241, 0.4);
}
.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(99, 102, 241, 0.55);
}
.btn--ghost {
    color: var(--text-primary);
    border-color: var(--border-color);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}
.btn--ghost:hover {
    border-color: var(--accent-mid);
    background: rgba(99, 102, 241, 0.08);
    transform: translateY(-2px);
}

/* ---------- 7. Section ---------- */
.section {
    padding: var(--section-py) 0;
    position: relative;
}
.section--alt {
    background: var(--bg-secondary);
}
[data-theme="light"] .section--alt {
    background: var(--bg-secondary);
}

.section__header {
    text-align: center;
    margin-bottom: 4rem;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}
.section__num {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-light);
    margin-bottom: 0.75rem;
    letter-spacing: 0.1em;
}
.section__title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.15;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}
.section__subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
}

/* ---------- 8. Hero ---------- */
.hero {
    min-height: 100vh;
    padding-top: calc(var(--header-h) + 2rem);
    padding-bottom: 4rem;
    display: flex;
    align-items: center;
    position: relative;
}
.hero__inner {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero__eyebrow {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-light);
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.9rem;
    border-radius: var(--radius-pill);
    margin-bottom: 1.5rem;
    letter-spacing: 0.05em;
}

.hero__title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 7vw, 4.5rem);
    line-height: 1.05;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.03em;
    margin-bottom: 1.25rem;
}

.hero__role {
    font-size: 1.15rem;
    color: var(--accent-light);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.hero__bio {
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 540px;
    margin-bottom: 2rem;
}

.hero__actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.hero__socials {
    display: flex;
    gap: 0.75rem;
}
.hero__socials a {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border-radius: var(--radius-sm);
    background: var(--glass-bg);
    border: 1px solid var(--border-soft);
    color: var(--text-muted);
    transition: all var(--t-fast);
}
.hero__socials a:hover {
    color: var(--accent-light);
    border-color: var(--accent-mid);
    transform: translateY(-2px);
    background: rgba(139, 92, 246, 0.08);
}
.hero__socials svg { width: 18px; height: 18px; }

.hero__visual {
    position: relative;
}

.hero__card {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    box-shadow: var(--shadow-card-hover);
    overflow: hidden;
    transform: perspective(1000px) rotateY(-2deg) rotateX(2deg);
    transition: transform var(--t-slow);
    position: relative;
}
.hero__card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-lg);
    padding: 1px;
    background: linear-gradient(135deg, var(--accent-start), transparent 50%, var(--accent-end));
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
    opacity: 0.6;
}
.hero__card:hover { transform: perspective(1000px) rotateY(0) rotateX(0); }

.hero__card-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.25rem;
    border-bottom: 1px solid var(--border-soft);
    background: rgba(0, 0, 0, 0.15);
}
.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--text-faint);
}
.dot--red { background: #ff5f57; }
.dot--yellow { background: #febc2e; }
.dot--green { background: #28c840; }
.hero__card-title {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-left: 0.75rem;
}

.hero__card-code {
    padding: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.7;
    color: var(--text-secondary);
    overflow-x: auto;
}
.c-key { color: #c084fc; }
.c-var { color: #22d3ee; }
.c-prop { color: #818cf8; }
.c-str { color: #86efac; }
.c-num { color: #fdba74; }
[data-theme="light"] .c-key { color: #9333ea; }
[data-theme="light"] .c-var { color: #0891b2; }
[data-theme="light"] .c-prop { color: #4f46e5; }
[data-theme="light"] .c-str { color: #16a34a; }
[data-theme="light"] .c-num { color: #ea580c; }

.hero__stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
    margin-top: 1.5rem;
}
.hero__stat {
    text-align: center;
    padding: 1.25rem 0.75rem;
    background: var(--bg-card);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all var(--t-fast);
}
.hero__stat:hover {
    border-color: var(--border-color);
    transform: translateY(-3px);
}
.hero__stat strong {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.75rem;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    margin-bottom: 0.25rem;
}
.hero__stat span {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.hero__scroll {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-muted);
    animation: scrollPulse 2s ease-in-out infinite;
}
.hero__scroll:hover { color: var(--accent-light); }
@keyframes scrollPulse {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.6; }
    50% { transform: translateX(-50%) translateY(8px); opacity: 1; }
}

/* ---------- 9. About ---------- */
.about {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 3rem;
    align-items: start;
}
.about__text p {
    margin-bottom: 1.25rem;
    font-size: 1.05rem;
    color: var(--text-secondary);
}
.about__text strong { color: var(--text-primary); }

.about__values {
    margin-top: 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
.about__values li {
    padding: 1rem 1.25rem;
    background: var(--glass-bg);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all var(--t-fast);
}
.about__values li:hover {
    border-color: var(--border-color);
    transform: translateY(-2px);
}
.about__values strong {
    display: block;
    color: var(--accent-light);
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
}
.about__values span {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.about__card {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    box-shadow: var(--shadow-card);
    position: sticky;
    top: calc(var(--header-h) + 1rem);
}
.about__photo {
    width: 160px;
    height: 160px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    background: var(--gradient-btn);
    padding: 3px;
    box-shadow: 0 8px 32px rgba(99, 102, 241, 0.35);
    position: relative;
}
.about__photo img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    display: block;
    background: var(--bg-secondary);
}
.about__photo::before {
    content: '';
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    border: 1px solid var(--accent-mid);
    opacity: 0.4;
    pointer-events: none;
}

.about__info {
    display: grid;
    gap: 1rem;
}
.about__info > div {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-soft);
}
.about__info > div:last-child { border-bottom: none; padding-bottom: 0; }
.about__info dt {
    font-size: 0.85rem;
    color: var(--text-muted);
}
.about__info dd {
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 500;
    text-align: right;
}

.status {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    font-weight: 500;
}
.status::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
    box-shadow: 0 0 8px currentColor;
}
.status--ok { color: #4ade80; }

/* ---------- 10. Skills ---------- */
.skills {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
    gap: 1.5rem;
}
.skill-card {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    transition: all var(--t-norm);
    position: relative;
    overflow: hidden;
}
.skill-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-soft);
    opacity: 0;
    transition: opacity var(--t-norm);
    z-index: 0;
}
.skill-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-glow);
    box-shadow: var(--shadow-card-hover);
}
.skill-card:hover::before { opacity: 1; }
.skill-card > * { position: relative; z-index: 1; }

.skill-card--featured {
    border-color: rgba(139, 92, 246, 0.35);
    background: linear-gradient(135deg,
        rgba(99, 102, 241, 0.1) 0%,
        rgba(139, 92, 246, 0.08) 50%,
        rgba(6, 182, 212, 0.1) 100%),
        var(--bg-card);
    box-shadow: 0 8px 32px rgba(139, 92, 246, 0.15);
}
.skill-card--featured::before {
    opacity: 0.4;
}
.skill-card__badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-pill);
    background: var(--gradient-btn);
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
    z-index: 2;
    box-shadow: 0 2px 12px rgba(99, 102, 241, 0.4);
}

.skill-card__icon {
    width: 52px;
    height: 52px;
    display: grid;
    place-items: center;
    border-radius: var(--radius-md);
    background: var(--gradient-btn);
    color: white;
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.35);
    margin: 0 auto;
    margin-bottom: 2rem;
}
.skill-card__icon svg { width: 24px; height: 24px; }

.skill-card h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}
.skill-card > p {
    color: var(--text-muted);
    font-size: 0.92rem;
    margin-bottom: 1.25rem;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}
.tag-list li {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    padding: 0.3rem 0.65rem;
    border-radius: var(--radius-pill);
    background: rgba(139, 92, 246, 0.08);
    border: 1px solid var(--border-soft);
    color: var(--accent-light);
}
[data-theme="light"] .tag-list li {
    background: rgba(99, 102, 241, 0.06);
    color: var(--accent-mid);
}

/* ---------- 11. Timeline ---------- */
.timeline {
    position: relative;
    max-width: 920px;
    margin: 0 auto;
    padding-left: 2.5rem;
}
.timeline::before {
    content: '';
    position: absolute;
    top: 0; bottom: 0;
    left: 8px;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent-start), var(--accent-mid), var(--accent-end));
    opacity: 0.4;
}

.timeline__item {
    position: relative;
    margin-bottom: 2.5rem;
    padding-left: 2rem;
}
.timeline__item:last-child { margin-bottom: 0; }

.timeline__marker {
    position: absolute;
    left: -2.5rem;
    top: 0.4rem;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--bg-primary);
    border: 2px solid var(--accent-mid);
    box-shadow: 0 0 0 4px var(--bg-primary), 0 0 14px var(--accent-mid);
    transition: transform var(--t-fast);
}
.timeline__item:hover .timeline__marker { transform: scale(1.2); }
.timeline__marker--edu {
    border-color: var(--accent-end);
    box-shadow: 0 0 0 4px var(--bg-primary), 0 0 14px var(--accent-end);
}

.timeline__content {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all var(--t-fast);
}
.timeline__item:hover .timeline__content {
    border-color: var(--border-color);
    transform: translateX(4px);
}
.timeline__date {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--accent-light);
    margin-bottom: 0.5rem;
    letter-spacing: 0.04em;
}
.timeline__content h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}
.timeline__company {
    font-size: 0.9rem;
    color: var(--accent-light);
    margin-bottom: 0.75rem;
    font-weight: 500;
}
.timeline__content > p:last-child,
.timeline__content > p:nth-last-child(2) {
    color: var(--text-muted);
    font-size: 0.93rem;
    line-height: 1.65;
}
.timeline__rncp {
    margin-top: 1rem;
}
.timeline__rncp li {
    padding: 0;
    background: transparent;
    border: none;
}
.timeline__rncp li a {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.3rem 0.65rem;
    border-radius: var(--radius-pill);
    background: var(--gradient-soft);
    border: 1px solid var(--border-color);
    color: var(--accent-light);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    transition: all var(--t-fast);
}
.timeline__rncp li a:hover {
    border-color: var(--accent-mid);
    background: rgba(139, 92, 246, 0.15);
    transform: translateY(-1px);
}
.timeline__rncp li a strong { font-weight: 700; color: var(--text-primary); }
.timeline__rncp li a span {
    color: var(--text-faint);
    font-size: 0.72rem;
    border-left: 1px solid var(--border-soft);
    padding-left: 0.4rem;
}
.timeline__rncp-cta {
    margin-top: 0.85rem !important;
    font-size: 0.85rem !important;
}
.timeline__rncp-cta a {
    color: var(--accent-end);
    font-family: var(--font-mono);
    transition: color var(--t-fast);
}
.timeline__rncp-cta a:hover { color: var(--accent-light); }

/* ---------- 12. Projects ---------- */
.projects {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}
.project-card {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    display: flex;
    flex-direction: column;
    transition: all var(--t-norm);
    position: relative;
    overflow: hidden;
}
.project-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-main);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--t-norm);
}
.project-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-color);
    box-shadow: var(--shadow-card-hover);
}
.project-card:hover::before { transform: scaleX(1); }

.project-card__head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}
.project-card__year {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-light);
}
.project-card__tag {
    font-size: 0.72rem;
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-pill);
    background: rgba(34, 211, 238, 0.1);
    color: #67e8f9;
    border: 1px solid rgba(34, 211, 238, 0.2);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}
.project-card__tag--product {
    background: rgba(139, 92, 246, 0.15);
    color: var(--accent-light);
    border-color: rgba(139, 92, 246, 0.35);
}

.project-card--more {
    background: linear-gradient(135deg,
        rgba(99, 102, 241, 0.12) 0%,
        rgba(139, 92, 246, 0.08) 50%,
        rgba(6, 182, 212, 0.12) 100%),
        var(--bg-card);
    border-color: rgba(139, 92, 246, 0.35);
    text-align: center;
    align-items: center;
    justify-content: center;
}
.project-card--more::before {
    transform: scaleX(1);
    height: 3px;
    opacity: 0.6;
}
.project-card__more {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 1rem;
}
.project-card__more strong {
    font-family: var(--font-heading);
    font-size: 3rem;
    line-height: 1;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    margin-bottom: 0.5rem;
}
.project-card__more span {
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 600;
}
.project-card--more > p {
    text-align: center;
}
.project-card--more .project-card__link {
    align-self: center;
}
[data-theme="light"] .project-card__tag {
    background: rgba(6, 182, 212, 0.08);
    color: #0e7490;
}

.project-card h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}
.project-card > p {
    color: var(--text-muted);
    font-size: 0.92rem;
    line-height: 1.6;
    margin-bottom: 1.25rem;
    flex-grow: 1;
}

.project-card__stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1rem;
}
.project-card__stack li {
    font-family: var(--font-mono);
    font-size: 0.74rem;
    padding: 0.25rem 0.55rem;
    border-radius: var(--radius-pill);
    background: rgba(139, 92, 246, 0.08);
    color: var(--accent-light);
    border: 1px solid var(--border-soft);
}

.project-card__link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.9rem;
    color: var(--accent-light);
    font-weight: 500;
    align-self: flex-start;
    transition: gap var(--t-fast);
}
.project-card__link:hover {
    color: var(--accent-end);
    gap: 0.6rem;
}

/* ---------- 13. Ventures ---------- */
.ventures {
    display: grid;
    gap: 1.5rem;
}
.venture {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 2rem;
    align-items: center;
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    transition: all var(--t-norm);
}
.venture:hover {
    border-color: var(--border-color);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
}

.venture__logo {
    width: 100%;
    aspect-ratio: 1 / 1;
    max-width: 180px;
    border-radius: var(--radius-md);
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(139, 92, 246, 0.08));
    border: 1px solid var(--border-soft);
    padding: 1.25rem;
    overflow: hidden;
    justify-self: center;
}
.venture__logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}
.venture__logo--geits {
    background: linear-gradient(135deg, rgba(56, 38, 102, 0.12), rgba(218, 44, 93, 0.12));
}
[data-theme="light"] .venture__logo--geits {
    background: linear-gradient(135deg, rgba(56, 38, 102, 0.06), rgba(218, 44, 93, 0.06));
}
.venture__logo--text {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    letter-spacing: 0.05em;
}


.venture__body h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}
.venture__role {
    display: block;
    font-size: 0.9rem;
    color: var(--accent-light);
    margin-bottom: 0.75rem;
    font-weight: 500;
}
.venture__body > p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}
.venture__links {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}
.venture__links a {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-end);
    padding: 0.4rem 0.85rem;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-pill);
    transition: all var(--t-fast);
}
.venture__links a:hover {
    border-color: var(--accent-mid);
    color: var(--accent-light);
    background: rgba(139, 92, 246, 0.08);
}

/* ---------- 14. Contact ---------- */
.contact {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 3rem;
    align-items: start;
}
.contact--simple {
    grid-template-columns: 1.3fr 1fr;
    align-items: center;
    max-width: 1000px;
    margin: 0 auto;
}
.contact__cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 1.5rem;
}
.contact__list--card {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
}
.contact__list--card li {
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-soft);
    border-radius: 0;
    padding: 0.85rem 0;
}
.contact__list--card li:last-child { border-bottom: none; }
.contact__list--card li:hover { transform: none; }

.contact__intro h3 {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}
.contact__intro > p {
    color: var(--text-muted);
    margin-bottom: 2rem;
    font-size: 1rem;
}

.contact__list {
    display: grid;
    gap: 0.75rem;
}
.contact__list li {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: var(--glass-bg);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all var(--t-fast);
}
.contact__list li:hover {
    border-color: var(--border-color);
    transform: translateX(4px);
}
.contact__label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-light);
    width: 60px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.contact__list a, .contact__list span:not(.contact__label) {
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 500;
}
.contact__list a:hover { color: var(--accent-light); }

.contact__card {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
}
.contact__card-glow {
    position: absolute;
    top: -50%;
    right: -30%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--accent-mid), transparent 70%);
    opacity: 0.15;
    pointer-events: none;
}

.contact__card h4 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    position: relative;
}
.contact__card > p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1.75rem;
    position: relative;
}

.contact-form {
    display: grid;
    gap: 1rem;
    position: relative;
}
.contact-form label {
    display: block;
}
.contact-form span {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
    font-weight: 500;
}
.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 0.85rem 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
[data-theme="light"] .contact-form input,
[data-theme="light"] .contact-form textarea {
    background: white;
}
.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent-mid);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}
.contact-form textarea {
    resize: vertical;
    min-height: 120px;
    font-family: var(--font-body);
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
.contact-form button {
    margin-top: 0.5rem;
    justify-content: center;
    width: 100%;
}

/* ---------- 15. Footer ---------- */
.footer {
    border-top: 1px solid var(--border-soft);
    padding: 3rem 0 2rem;
    background: var(--bg-primary);
}
.footer__inner {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 2rem;
    align-items: center;
}
.footer__brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}
.footer__logo {
    width: 44px;
    height: 44px;
    object-fit: contain;
    flex-shrink: 0;
}
.footer__brand div {
    display: flex;
    flex-direction: column;
}
.footer__brand strong {
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-size: 1rem;
}
.footer__brand span {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer__nav {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}
.footer__nav a {
    color: var(--text-muted);
    font-size: 0.88rem;
    font-weight: 500;
}
.footer__nav a:hover { color: var(--accent-light); }

.footer__copy {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--text-faint);
    font-size: 0.82rem;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-soft);
}

/* ---------- 16. Reveal-in animation (additive, non-blocking) ----------
   Content is always visible by default. JS adds .reveal-in when an element
   scrolls into view, triggering a subtle one-shot lift animation. */
@keyframes reveal-in {
    from { transform: translateY(14px); opacity: 0.4; }
    to   { transform: translateY(0); opacity: 1; }
}
.reveal-in {
    animation: reveal-in 0.55s ease both;
}

/* ---------- 17. Responsive ---------- */
@media (max-width: 980px) {
    .hero__inner { grid-template-columns: 1fr; gap: 3rem; }
    .hero__visual { order: -1; max-width: 540px; margin: 0 auto; width: 100%; }
    .hero__stats { grid-template-columns: repeat(3, 1fr); }
    .about { grid-template-columns: 1fr; }
    .about__card { position: static; }
    .contact { grid-template-columns: 1fr; }
    .venture { grid-template-columns: 1fr; text-align: center; }
    .venture__logo { max-width: 200px; margin: 0 auto; }
    .venture__links { justify-content: center; }
}

@media (max-width: 720px) {
    .nav { display: none; }
    .menu-toggle { display: inline-flex; }
    .nav.is-open {
        display: flex;
        position: fixed;
        top: var(--header-h);
        left: 0; right: 0;
        flex-direction: column;
        background: var(--bg-overlay);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        padding: 1.5rem var(--container-padding);
        border-bottom: 1px solid var(--border-soft);
        gap: 1.25rem;
    }
    .nav.is-open a { padding: 0.5rem 0; }

    .hero { padding-top: calc(var(--header-h) + 1rem); }
    .hero__title { font-size: clamp(2rem, 9vw, 3rem); }
    .hero__actions { width: 100%; }
    .hero__actions .btn { flex: 1; justify-content: center; }
    .hero__stats { grid-template-columns: repeat(3, 1fr); gap: 0.4rem; }
    .hero__stat { padding: 0.85rem 0.5rem; }
    .hero__stat strong { font-size: 1.3rem; }
    .hero__stat span { font-size: 0.7rem; }
    .hero__card-code { font-size: 0.72rem; padding: 1rem; }

    .section__header { margin-bottom: 2.5rem; }
    .about__values { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .timeline { padding-left: 1.5rem; }
    .timeline__item { padding-left: 1.25rem; }
    .timeline__marker { left: -1.75rem; }

    .footer__inner { grid-template-columns: 1fr; text-align: center; }
    .footer__brand { justify-content: center; }
    .footer__brand div { align-items: center; }
    .footer__nav { justify-content: center; }
}

@media (max-width: 480px) {
    .header__brand-name { display: none; }
    .lang-toggle { padding: 0 0.6rem; font-size: 0.75rem; }
    .hero__eyebrow { font-size: 0.75rem; padding: 0.3rem 0.7rem; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    .reveal { opacity: 1; transform: none; }
}