/* ============================================================
   Tien Dat Do — Portfolio
   "Aurora Dark" — editorial, premium, indigo→cyan accent
   ============================================================ */

:root {
    /* Surfaces — warm charcoal (caladan.xyz) */
    --bg: #151413;
    --bg-2: #100F0E;
    --surface: rgba(232, 228, 218, 0.035);
    --surface-2: rgba(232, 228, 218, 0.065);
    --card-bg-color: rgba(28, 27, 24, 0.72);
    --line: rgba(198, 193, 182, 0.14);
    --line-strong: rgba(198, 193, 182, 0.26);
    --card-border-color: rgba(198, 193, 182, 0.12);
    --border-color: rgba(198, 193, 182, 0.14);

    /* Text — warm beige */
    --text-color-primary: #E7E4DD;
    --text: #C6C1B6;
    --text-color-secondary: #948F82;
    --muted: #948F82;
    --faint: rgba(198, 193, 182, 0.5);
    --hover-accent-color: #FFFFFF;

    /* Accent — electric lime (legacy var names repointed to lime) */
    --lime: #E0FE35;
    --indigo: #E0FE35;
    --cyan: #E0FE35;
    --violet: #C6C1B6;
    --accent: #E0FE35;
    --accent-grad: #E0FE35;
    --accent-glow: transparent;

    /* Type scale — five tokens, no ad-hoc sizes */
    --fs-display: clamp(2.75rem, 7vw, 5rem);
    --fs-title:   clamp(1.75rem, 3.4vw, 2.4rem);
    --fs-sub:     1.375rem;
    --fs-body:    1rem;
    --fs-meta:    0.8125rem;

    /* Weight scale — two weights, both light */
    --fw-body: 400;
    --fw-med:  500;

    /* Radius — two steps */
    --r:    10px;
    --r-sm: 6px;

    /* Type — Matter-like grotesque + mono eyebrows */
    --font-display: 'Hanken Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Hanken Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', monospace;
    --font-primary: var(--font-body); /* legacy alias */


    --transition-speed: 0.3s;
    --transition-timing: cubic-bezier(0.22, 0.61, 0.36, 1);

    --container: 1280px;
    --gutter: clamp(22px, 4.5vw, 64px);
    color-scheme: dark;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 0;
    -webkit-text-size-adjust: 100%;
}

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-weight: var(--fw-body);
    font-size: var(--fs-body);
    line-height: 1.7;
    letter-spacing: normal;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection { background: rgba(224, 254, 53, 0.85); color: #151413; }

a { color: inherit; }
strong, b { font-weight: var(--fw-med); }

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 4px;
}

[hidden], .hidden { display: none !important; }

.container {
    width: 90%;
    max-width: var(--container);
    margin: 0 auto;
}

/* ============================================================
   Atmosphere: aurora + grain
   ============================================================ */
.aurora {
    position: fixed;
    inset: 0;
    z-index: -2;
    overflow: hidden;
    pointer-events: none;
    background:
        radial-gradient(110% 70% at 50% -12%, rgba(224, 254, 53, 0.035), transparent 60%),
        var(--bg);
}

.aurora-blob { display: none; }

.grain {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    opacity: 0.045;
    mix-blend-mode: overlay;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ============================================================
   Navigation
   ============================================================ */
.top-nav {
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    padding: 22px 0;
    z-index: 1000;
    transition: padding var(--transition-speed) var(--transition-timing),
                background-color var(--transition-speed) var(--transition-timing),
                border-color var(--transition-speed) var(--transition-timing),
                backdrop-filter var(--transition-speed) var(--transition-timing);
    border-bottom: 1px solid transparent;
}

.top-nav.scrolled {
    padding: 13px 0;
    background-color: rgba(8, 8, 12, 0.72);
    backdrop-filter: blur(16px) saturate(140%);
    -webkit-backdrop-filter: blur(16px) saturate(140%);
    border-bottom: 1px solid var(--line);
}

/* Full-bleed nav: logo flush-left, menu flush-right (caladan.xyz style) */
.nav-container { display: flex; justify-content: space-between; align-items: center; width: 100%; max-width: none; padding: 0 var(--gutter); }

.nav-logo {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    font-family: var(--font-display);
    font-size: var(--fs-sub);
    font-weight: var(--fw-med);
    letter-spacing: -0.01em;
    color: var(--text);
}
.nav-logo-mark { color: var(--accent); }

.nav-links { display: flex; align-items: center; gap: 34px; }

.nav-links a {
    position: relative;
    color: var(--muted);
    text-decoration: none;
    font-size: var(--fs-body);
    font-weight: var(--fw-med);
    letter-spacing: 0.01em;
    transition: color var(--transition-speed) var(--transition-timing);
    display: inline-flex;
    align-items: baseline;
    gap: 7px;
}
.nav-num {
    font-family: var(--font-mono);
    font-size: var(--fs-meta);
    color: var(--accent);
    opacity: 0.7;
}
.nav-links a:hover { color: var(--text); }
.nav-links a:not(.nav-cta)::after {
    content: '';
    position: absolute;
    left: 0; bottom: -6px;
    width: 0; height: 1.5px;
    background: var(--accent-grad);
    transition: width var(--transition-speed) var(--transition-timing);
}
.nav-links a:not(.nav-cta):hover::after { width: 100%; }

.nav-links a.nav-cta {
    padding: 8px 16px;
    border-radius: var(--r-sm);
    border: 1px solid var(--line-strong);
    color: var(--text);
    font-weight: var(--fw-med);
    background: var(--surface);
    transition: all var(--transition-speed) var(--transition-timing);
}
.nav-links a.nav-cta:hover {
    border-color: var(--accent);
    background: var(--accent);
    color: #151413;
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0;
    overflow: clip;
}

.hero-stage {
    position: relative;
    width: 100%;
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: clip;
    background-color: var(--bg);
    background-image: url("assets/hero/science-collage.jpg");
    background-size: cover;
    background-position: center;
}

.hero-plane {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    max-width: none;
    pointer-events: none;
    will-change: transform;
}
img.hero-plane {
    display: block;
    object-fit: cover;
    object-position: center;
}
.hero-plane--bg {
    z-index: 1;
    inset: -6%;
    width: 112%;
    height: 112%;
    filter: brightness(0.58) saturate(0.62) contrast(1.04);
}
.hero-plane--veil {
    z-index: 2;
    will-change: auto;
    background:
        linear-gradient(180deg,
            rgba(21, 20, 19, 0.7) 0%,
            rgba(21, 20, 19, 0.28) 26%,
            rgba(21, 20, 19, 0.22) 58%,
            rgba(21, 20, 19, 0.9) 100%),
        radial-gradient(ellipse 74% 58% at 50% 46%,
            rgba(21, 20, 19, 0.74) 0%,
            rgba(21, 20, 19, 0.46) 40%,
            rgba(21, 20, 19, 0.16) 72%,
            rgba(21, 20, 19, 0.08) 100%);
}

.hero-floor {
    position: absolute;
    inset: auto 0 0 0;
    height: 260px;
    z-index: 7;
    pointer-events: none;
    background: linear-gradient(to bottom, transparent, var(--bg));
}

.hero-grain {
    position: absolute;
    inset: 0;
    z-index: 7;
    pointer-events: none;
    opacity: 0.05;
    mix-blend-mode: overlay;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.hero-content {
    position: relative;
    z-index: 8;
    max-width: 880px;
    padding: 150px 20px 110px;
}
.hero-content::before {
    content: "";
    position: absolute;
    inset: 24px -56px 64px;
    z-index: -1;
    pointer-events: none;
    background: radial-gradient(ellipse at center,
        rgba(21, 20, 19, 0.88) 0%,
        rgba(21, 20, 19, 0.58) 46%,
        rgba(21, 20, 19, 0.18) 70%,
        transparent 82%);
}

.hero-kicker {
    display: inline-flex;
    flex-wrap: wrap;
    justify-content: center;
    text-align: center;
    align-items: center;
    max-width: 100%;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: var(--fs-meta);
    letter-spacing: normal;
    color: var(--muted);
    padding: 8px 16px;
    border: 1px solid var(--line);
    border-radius: var(--r-sm);
    background: var(--surface);
    margin-bottom: 30px;
}

.hero-title {
    font-family: var(--font-display);
    font-size: var(--fs-display);
    font-weight: var(--fw-med);
    line-height: 1.0;
    letter-spacing: -0.035em;
    overflow-wrap: break-word;
    margin-bottom: 0.22em;
    color: var(--text-color-primary);
    text-shadow: 0 2px 28px rgba(21, 20, 19, 0.9);
}
.accent-text {
    color: var(--accent);
    -webkit-text-fill-color: var(--accent);
}

.hero-subtitle {
    font-family: var(--font-body);
    font-weight: var(--fw-med);
    font-size: var(--fs-sub);
    color: var(--text);
    letter-spacing: -0.01em;
    margin-bottom: 0.9em;
    text-shadow: 0 2px 18px rgba(21, 20, 19, 0.8);
}

.hero-statement {
    max-width: 620px;
    margin: 0 auto 2.4em;
}
.hero-statement p {
    font-size: var(--fs-body);
    font-weight: var(--fw-body);
    color: var(--muted);
    line-height: 1.8;
    text-shadow: 0 1px 14px rgba(21, 20, 19, 0.75);
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 2.6em;
}

.btn-resume {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-body);
    font-weight: var(--fw-med);
    font-size: var(--fs-body);
    text-decoration: none;
    padding: 14px 26px;
    border-radius: var(--r-sm);
    color: #07070A;
    background: var(--accent-grad);
    border: 1px solid var(--accent);
    transition: background-color 0.2s var(--transition-timing), color 0.2s var(--transition-timing);
}
.btn-resume:hover { background: transparent; color: var(--accent); }

.btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-body);
    font-weight: var(--fw-med);
    font-size: var(--fs-body);
    text-decoration: none;
    padding: 14px 24px;
    border-radius: var(--r-sm);
    color: var(--text);
    border: 1px solid var(--line-strong);
    background: var(--surface);
    transition: border-color var(--transition-speed) var(--transition-timing), color var(--transition-speed) var(--transition-timing);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--text-color-primary); }
.btn-arrow { transition: transform 0.25s var(--transition-timing); }
.btn-ghost:hover .btn-arrow { transform: translateX(4px); }

.hero-socials {
    display: flex;
    gap: 18px;
    justify-content: center;
    align-items: center;
    font-family: var(--font-mono);
    font-size: var(--fs-meta);
    letter-spacing: 0.02em;
}
.hero-socials a {
    color: var(--muted);
    text-decoration: none;
    transition: color var(--transition-speed) var(--transition-timing);
}
.hero-socials a:hover { color: var(--text); }
.hero-socials-sep { width: 4px; height: 4px; border-radius: 50%; background: var(--line-strong); }

.hero-scroll {
    position: absolute;
    bottom: 34px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 8;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--faint);
}
.hero-scroll-line {
    width: 1px; height: 42px;
    background: linear-gradient(to bottom, var(--line-strong), transparent);
}
.hero-scroll-text {
    font-family: var(--font-mono);
    font-size: var(--fs-meta);
    letter-spacing: normal;
}

/* ============================================================
   Section scaffolding
   ============================================================ */
/* Nav-link landing. Sections carry their own 110px of top padding, so with a
   0 offset the section's top border lands at the viewport edge — behind the
   blurred nav — and the "/ nn" kicker sits ~38px below it. The old 96px offset
   parked the previous section's tail, and the divider rule, in the gap under
   the nav. Keep this under the nav's height (72px) or that residue returns. */
.content-section {
    padding: 110px 0;
    position: relative;
    scroll-margin-top: 0;
}
.content-section + .content-section { border-top: 1px solid var(--line); }

.section-head { max-width: 720px; margin: 0 0 52px; text-align: left; }

.section-index {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: var(--fs-meta);
    letter-spacing: normal;
    color: var(--accent);
    margin-bottom: 14px;
}

.section-title {
    font-family: var(--font-display);
    font-size: var(--fs-title);
    font-weight: var(--fw-med);
    letter-spacing: -0.025em;
    line-height: 1.1;
    overflow-wrap: break-word;
    color: var(--text-color-primary);
}

.section-lead {
    margin-top: 16px;
    font-size: var(--fs-body);
    font-weight: var(--fw-body);
    color: var(--muted);
    line-height: 1.7;
}

/* ============================================================
   Skills
   ============================================================ */
.skills-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 34px 40px;
}
@media (min-width: 980px) { .skills-list { grid-template-columns: repeat(4, 1fr); } }

.skill-item {
    position: relative;
    padding: 24px 0 0;
    border-top: 1px solid var(--line);
}

.skill-num {
    font-family: var(--font-mono);
    font-size: var(--fs-meta);
    color: var(--accent);
    opacity: 0.8;
}
.skill-item h3 {
    font-family: var(--font-body);
    color: var(--text);
    font-size: var(--fs-sub);
    font-weight: var(--fw-med);
    margin: 10px 0 12px;
    letter-spacing: -0.01em;
}
.skill-item p {
    font-size: var(--fs-body);
    color: var(--muted);
    font-weight: var(--fw-body);
    line-height: 1.65;
}

/* ============================================================
   Projects carousel
   ============================================================ */
.project-carousel {
    display: flex;
    flex-direction: column;
    gap: 18px;
    position: relative;
}

/* 740px, not 520: the diagram slides put their artwork above the caption, and
   the caption is bottom-anchored — a two-row frame grid at a readable size does
   not fit in a 520px slide. The <=900px override keeps the old height, where
   the caption goes full-width and the art is cropped anyway. */
.project-slider {
    position: relative;
    min-height: 740px;
    border: 1px solid var(--line);
    border-radius: var(--r);
    overflow: hidden;
}

.project-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    display: none;
    color: #fff;
}
.project-slide.active { display: block; animation: fadeIn 0.6s var(--transition-timing); }

.project-slide-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(115deg, rgba(7, 7, 10, 0.94) 26%, rgba(7, 7, 10, 0.45) 70%, rgba(7, 7, 10, 0.2) 100%),
        linear-gradient(to top, rgba(7, 7, 10, 0.85), transparent 55%);
}

.project-slide--diagram { background-position: top center; }
.project-slide--diagram .project-slide-overlay {
    background: linear-gradient(to top,
        rgba(7, 7, 10, 0.95) 24%, rgba(7, 7, 10, 0.55) 52%, rgba(7, 7, 10, 0) 80%);
}

.project-slide-content {
    position: absolute;
    inset: auto 0 0 0;
    padding: 44px;
    max-width: 640px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.project-tag {
    align-self: flex-start;
    font-family: var(--font-mono);
    font-size: var(--fs-meta);
    letter-spacing: normal;
    color: var(--accent);
    padding: 0;
    font-weight: var(--fw-med);
}

.project-slide-content h3 {
    font-family: var(--font-display);
    font-size: var(--fs-sub);
    font-weight: var(--fw-med);
    letter-spacing: -0.01em;
    margin: 0;
    line-height: 1.1;
}
.project-slide-content p {
    font-size: var(--fs-body);
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.88);
    margin: 0;
    font-weight: var(--fw-body);
}
.project-meta {
    font-family: var(--font-mono);
    font-size: var(--fs-meta) !important;
    letter-spacing: 0.01em;
    color: rgba(255, 255, 255, 0.74) !important;
    text-transform: none;
}

.project-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
    margin-top: 8px;
}
.btn-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--r-sm);
    background: #fff;
    color: #07070A;
    text-decoration: none;
    font-size: var(--fs-body);
    font-weight: var(--fw-med);
    transition: background-color 0.2s var(--transition-timing);
}
.btn-link:hover { background: #E7E4DD; }
.btn-link--ghost {
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.3);
}
.btn-link--ghost:hover { background: rgba(255, 255, 255, 0.12); }

.project-control-panel {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
    border-radius: var(--r);
    overflow: hidden;
}
.project-control-btn {
    position: relative;
    text-align: left;
    padding: 16px 16px 22px;
    background: rgba(13, 14, 19, 0.85);
    color: rgba(255, 255, 255, 0.7);
    border: none;
    cursor: pointer;
    font-family: var(--font-body);
    transition: background var(--transition-speed) var(--transition-timing), color var(--transition-speed) var(--transition-timing);
}
.project-control-btn:hover { background: rgba(255, 255, 255, 0.05); color: #fff; }
.project-control-btn.active { color: #fff; background: rgba(224, 254, 53, 0.12); }

.project-control-title {
    display: block;
    font-size: var(--fs-body);
    font-weight: var(--fw-med);
    margin-bottom: 6px;
    letter-spacing: -0.01em;
}
.project-control-desc {
    display: block;
    font-size: var(--fs-meta);
    line-height: 1.4;
    color: rgba(255, 255, 255, 0.5);
    font-weight: var(--fw-body);
}
.project-progress {
    position: absolute;
    left: 0; bottom: 0;
    height: 3px; width: 0%;
    background: var(--accent-grad);
}

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

/* ============================================================
   Experience timeline
   ============================================================ */
.timeline { position: relative; max-width: 880px; }
.timeline::before {
    content: '';
    position: absolute;
    left: 5px; top: 8px; bottom: 8px;
    width: 1px;
    background: var(--line);
}

.experience-entry {
    position: relative;
    padding: 4px 0 8px 44px;
    margin-bottom: 40px;
}
.experience-entry:last-child { margin-bottom: 0; }

.timeline-node {
    position: absolute;
    left: 0; top: 12px;
    width: 11px; height: 11px;
    border-radius: 50%;
    background: var(--accent);
}

.entry-head {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: space-between;
    gap: 8px;
}
.experience-entry h3 {
    font-family: var(--font-display);
    font-size: var(--fs-sub);
    color: var(--text);
    font-weight: var(--fw-med);
    letter-spacing: -0.01em;
}
.experience-entry .dates {
    font-family: var(--font-mono);
    font-size: var(--fs-meta);
    color: var(--muted);
    letter-spacing: 0.01em;
    white-space: nowrap;
}
.experience-entry .role-title {
    font-weight: var(--fw-body);
    font-size: var(--fs-body);
    color: var(--text-color-primary);
    margin: 6px 0 16px;
}

.responsibilities { list-style: none; padding-left: 0; }
.responsibilities li {
    margin-bottom: 11px;
    padding-left: 20px;
    position: relative;
    color: var(--muted);
    font-weight: var(--fw-body);
    line-height: 1.7;
}
.responsibilities li::before {
    content: '';
    position: absolute;
    left: 2px; top: 0.72em;
    width: 4px; height: 1px;
    background: var(--line-strong);
}
.responsibilities li strong { color: var(--text); font-weight: var(--fw-med); }

/* ============================================================
   Education & Certifications
   ============================================================ */
.edu-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 34px 40px;
    align-items: start;
}
@media (max-width: 820px) { .edu-grid { grid-template-columns: 1fr; } }

.education-entry {
    padding: 24px 0 0;
    border-top: 1px solid var(--line);
}
.education-entry h3 {
    font-family: var(--font-display);
    font-size: var(--fs-sub);
    color: var(--text);
    font-weight: var(--fw-med);
    margin-bottom: 6px;
    letter-spacing: -0.01em;
}
.edu-degree { color: var(--text); font-weight: var(--fw-med); margin-bottom: 4px; }
.edu-dates { font-family: var(--font-mono); font-size: var(--fs-meta); color: var(--muted); margin-bottom: 14px; }
.education-entry .coursework {
    font-size: var(--fs-body);
    color: var(--muted);
    font-weight: var(--fw-body);
    line-height: 1.6;
    padding-top: 14px;
    border-top: 1px solid var(--line);
}

.education-entry.certifications h3 { font-size: var(--fs-sub); margin-bottom: 18px; }

.cert-list { list-style: none; padding: 0; margin: 0; }
.cert-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 13px 0;
    border-bottom: 1px solid var(--line);
}
.cert-item:last-child { border-bottom: none; }
.cert-name {
    color: var(--text);
    text-decoration: none;
    font-size: var(--fs-body);
    font-weight: var(--fw-body);
    line-height: 1.4;
    background-image: linear-gradient(var(--accent), var(--accent));
    background-size: 0% 1.5px;
    background-position: 0 100%;
    background-repeat: no-repeat;
    transition: background-size 0.35s var(--transition-timing), color var(--transition-speed) var(--transition-timing);
}
.cert-name:hover { color: #fff; background-size: 100% 1.5px; }
.cert-issuer {
    flex-shrink: 0;
    font-family: var(--font-mono);
    font-size: var(--fs-meta);
    letter-spacing: normal;
    color: var(--muted);
}

/* ============================================================
   Contact
   ============================================================ */
.contact-section {
    padding: 110px 0;
    position: relative;
    border-top: 1px solid var(--line);
    scroll-margin-top: 0;
}

.contact-section .container {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    column-gap: 64px;
    align-items: start;
}
.contact-section .section-head { grid-area: 1 / 1; margin-bottom: 28px; }
.contact-links { grid-area: 2 / 1; }
.contact-form-container { grid-area: 1 / 2 / span 2 / auto; }

.contact-form-container {
    max-width: none;
    margin: 0;
    padding: 34px;
    border-radius: var(--r);
    border: 1px solid var(--line);
    text-align: left;
}
.contact-form { display: flex; flex-direction: column; gap: 22px; }
.form-group { position: relative; }
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px 18px;
    border: 1px solid var(--line);
    border-radius: var(--r-sm);
    background: rgba(255, 255, 255, 0.02);
    color: var(--text);
    font-family: var(--font-body);
    font-size: var(--fs-body);
    outline: none;
    transition: border-color var(--transition-speed) var(--transition-timing), box-shadow var(--transition-speed) var(--transition-timing), background-color var(--transition-speed) var(--transition-timing);
}
.form-group textarea { resize: vertical; }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--accent);
    background: rgba(255, 255, 255, 0.04);

}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--faint); }
.form-group select option { background: var(--bg-2); color: var(--text); }

.form-validation {
    position: absolute;
    bottom: -18px; left: 2px;
    font-size: var(--fs-meta);
    color: #ff8a8a;
    opacity: 0;
    transition: opacity var(--transition-speed);
}
.form-validation.show { opacity: 1; }
.form-validation.valid { color: #6ee7b7; }

.form-status { min-height: 22px; font-size: var(--fs-body); color: var(--muted); }
.form-status.success { color: #6ee7b7; }
.form-status.error { color: #ff8a8a; }

.form-buttons { display: flex; gap: 14px; align-items: center; }
.btn-submit, .btn-secondary {
    padding: 14px 26px;
    border-radius: var(--r-sm);
    font-family: var(--font-body);
    font-weight: var(--fw-med);
    font-size: var(--fs-body);
    cursor: pointer;
    transition: background-color var(--transition-speed) var(--transition-timing), color var(--transition-speed) var(--transition-timing), border-color var(--transition-speed) var(--transition-timing);
    flex: 1;
    text-align: center;
    border: 1px solid transparent;
}
.btn-submit {
    color: #07070A;
    background: var(--accent-grad);
}
.btn-submit:hover { background: transparent; color: var(--accent); border-color: var(--accent); }
.btn-secondary {
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--line-strong);
}
.btn-secondary:hover { border-color: var(--accent); color: var(--text-color-primary); }

.contact-links { margin-top: 30px; }
.contact-links p { margin-bottom: 12px; }
.contact-link {
    color: var(--text);
    text-decoration: none;
    font-size: var(--fs-body);
    font-weight: var(--fw-body);
    border-bottom: 1px solid var(--line-strong);
    padding-bottom: 2px;
    transition: color var(--transition-speed) var(--transition-timing), border-color var(--transition-speed) var(--transition-timing);
}
.contact-link:hover { color: var(--accent); border-color: var(--accent); }
.contact-sep { color: var(--faint); margin: 0 8px; }

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
    border-top: 1px solid var(--line);
    padding: 36px 0;
    background: var(--bg-2);
}
.footer-inner { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }
.footer-mark {
    font-family: var(--font-display);
    font-weight: var(--fw-med);
    font-size: var(--fs-body);
    color: var(--accent);
}
.site-footer p { font-size: var(--fs-meta); color: var(--faint); font-weight: var(--fw-body); }

/* ============================================================
   Reveal animations
   ============================================================ */
.js .reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.7s var(--transition-timing), transform 0.7s var(--transition-timing); }
.js .reveal.in-view { opacity: 1; transform: none; }
/* Staggered hero children */
.js .hero .reveal[data-reveal] { transition-delay: calc(var(--d, 0) * 1ms); }
.js .hero .reveal[data-reveal="0"] { --d: 60; }
.js .hero .reveal[data-reveal="1"] { --d: 160; }
.js .hero .reveal[data-reveal="2"] { --d: 260; }
.js .hero .reveal[data-reveal="3"] { --d: 360; }
.js .hero .reveal[data-reveal="4"] { --d: 460; }
.js .hero .reveal[data-reveal="5"] { --d: 560; }

/* Nav-click focus. SectionFocusManager (chatbot.js) sets .section-blur on
   every other section for 4s after a nav link is clicked. These rules existed
   until 8eb83c3 (the caladan redesign) dropped them, leaving the click with no
   feedback. Restored without the original scale(1.02) and white box-shadow. */
.hero { transition: opacity 0.45s var(--transition-timing), filter 0.45s var(--transition-timing); }
.js .reveal { transition: opacity 0.7s var(--transition-timing), transform 0.7s var(--transition-timing), filter 0.45s var(--transition-timing); }
.js .hero.section-blur,
.js .content-section.section-blur,
.js .contact-section.section-blur { opacity: 0.32; filter: blur(2px); }

/* ============================================================
   Mobile nav
   ============================================================ */
.nav-hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 6px;
    background: none;
    border: none;
}
.nav-hamburger span { width: 26px; height: 2px; background: var(--text); margin: 3px 0; transition: 0.3s var(--transition-timing); border-radius: 2px; }
.nav-hamburger.active span:nth-child(1) { transform: rotate(-45deg) translate(-5px, 6px); }
.nav-hamburger.active span:nth-child(2) { opacity: 0; }
.nav-hamburger.active span:nth-child(3) { transform: rotate(45deg) translate(-5px, -6px); }

.mobile-nav-overlay {
    position: fixed; inset: 0;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(4px);
    z-index: 1999;
    opacity: 0; visibility: hidden; pointer-events: none;
    transition: all 0.3s var(--transition-timing);
}
.mobile-nav-overlay.active { opacity: 1; visibility: visible; pointer-events: all; }
.mobile-nav-menu {
    position: fixed; top: 0; right: -340px;
    width: 320px; height: 100vh;
    background: #0A0A0F;
    border-left: 1px solid var(--line);
    box-shadow: -16px 0 40px rgba(0, 0, 0, 0.5);
    display: flex; flex-direction: column; align-items: stretch; justify-content: center;
    gap: 14px; padding: 80px 32px;
    transition: right 0.4s var(--transition-timing);
    z-index: 2000;
}
.mobile-nav-overlay.active .mobile-nav-menu { right: 0; }
.mobile-nav-menu a {
    color: var(--text); text-decoration: none;
    font-family: var(--font-display); font-weight: var(--fw-med); font-size: var(--fs-sub);
    padding: 16px 22px; border-radius: 12px;
    background: var(--surface); border: 1px solid var(--line);
    text-align: left;
    transition: all 0.3s var(--transition-timing);
}
.mobile-nav-menu a:hover { background: var(--surface-2); border-color: var(--accent); }
.mobile-nav-menu a.nav-cta { background: var(--accent-grad); color: #07070A; border: none; font-weight: var(--fw-med); margin-top: 8px; }

/* ============================================================
   Modals
   ============================================================ */
.modal-overlay {
    position: fixed; inset: 0;
    background: rgba(0, 0, 0, 0.75);
    z-index: 2000;
    display: none;
    align-items: center; justify-content: center;
    backdrop-filter: blur(6px);
    padding: 20px;
}
.modal-overlay.active { display: flex; }
.modal-content {
    background: rgba(16, 17, 24, 0.96);
    border: 1px solid var(--line-strong);
    border-radius: 20px;
    max-width: 760px; max-height: 84vh; width: 100%;
    position: relative; overflow-y: auto;
    padding: 36px;
    box-shadow: 0 24px 60px -30px rgba(0, 0, 0, 0.8);
    animation: modalAppear 0.35s var(--transition-timing);
}
.modal-content.calendar-modal { max-width: 680px; }
@keyframes modalAppear { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
.modal-close {
    position: absolute; top: 16px; right: 18px;
    background: none; border: none; color: var(--muted);
    font-size: var(--fs-sub); cursor: pointer;
    width: 40px; height: 40px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    transition: all var(--transition-speed) var(--transition-timing);
}
.modal-close:hover { color: var(--text); background: var(--surface); }

.calendar-container h3 { color: var(--text); font-family: var(--font-display); font-size: var(--fs-sub); font-weight: var(--fw-med); margin-bottom: 12px; text-align: center; }
.calendar-container > p { color: var(--muted); text-align: center; margin-bottom: 28px; }
.calendar-options { display: flex; flex-direction: column; gap: 18px; margin-bottom: 26px; }
.calendar-option {
    background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 22px;
    transition: all var(--transition-speed) var(--transition-timing);
}
.calendar-option:hover { background: var(--surface-2); border-color: var(--accent); }
.calendar-option h4 { color: var(--text); font-size: var(--fs-body); margin-bottom: 8px; font-weight: var(--fw-med); }
.calendar-option p { color: var(--muted); font-size: var(--fs-body); margin-bottom: 14px; }
.calendar-btn {
    width: 100%; padding: 13px 20px; border-radius: 10px; border: none; cursor: pointer;
    background: var(--accent-grad); color: #07070A; font-family: var(--font-body); font-weight: var(--fw-med); font-size: var(--fs-body);
    transition: transform 0.25s var(--transition-timing), box-shadow 0.25s var(--transition-timing);
}
.calendar-btn:hover { background: #ECFF6A; }
.meeting-form { display: flex; flex-direction: column; gap: 13px; }
.meeting-form input, .meeting-form select, .meeting-form textarea {
    width: 100%; padding: 12px 15px; border: 1px solid var(--line); border-radius: 10px;
    background: rgba(255, 255, 255, 0.02); color: var(--text); font-family: var(--font-body); font-size: var(--fs-body); outline: none;
    transition: border-color var(--transition-speed) var(--transition-timing);
}
.meeting-form input:focus, .meeting-form select:focus, .meeting-form textarea:focus { border-color: var(--accent); }
.meeting-form select option { background: var(--bg-2); }
.availability-info { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 20px; text-align: center; }
.availability-info h4 { color: var(--text); font-size: var(--fs-body); margin-bottom: 12px; font-weight: var(--fw-med); }
.availability-info p { color: var(--muted); font-size: var(--fs-body); margin-bottom: 6px; }

.project-modal-content h2 { color: var(--text); font-family: var(--font-display); font-size: var(--fs-sub); margin-bottom: 18px; font-weight: var(--fw-med); }
.project-modal-content .project-links { margin: 18px 0; }
.project-modal-content .project-links a {
    display: inline-block; margin-right: 12px; padding: 9px 16px; border-radius: 8px;
    background: var(--accent-grad); color: #07070A; text-decoration: none; font-size: var(--fs-body); font-weight: var(--fw-med);
}
.tech-stack { margin: 18px 0; }
.tech-stack h4 { color: var(--text); font-size: var(--fs-body); margin-bottom: 10px; }
.tech-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tech-tag { padding: 5px 12px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-sm); color: var(--muted); font-size: var(--fs-meta); font-family: var(--font-mono); }

/* ============================================================
   Chatbot
   ============================================================ */
.chatbot-toggle {
    position: fixed; bottom: 28px; right: 28px;
    width: 60px; height: 60px; border-radius: 50%;
    background: var(--accent-grad); color: #07070A; border: none; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    z-index: 1001;
    transition: background-color var(--transition-speed) var(--transition-timing);
}
.chatbot-toggle:hover { background: #ECFF6A; }

.chatbot-container {
    position: fixed; bottom: 100px; right: 28px;
    width: 420px; height: 660px; max-height: calc(100vh - 130px);
    background: rgba(13, 14, 20, 0.92);
    border: 1px solid var(--line-strong);
    border-radius: 18px;
    z-index: 1000; display: none; flex-direction: column; overflow: hidden;
    box-shadow: 0 20px 50px -22px rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
}
.chatbot-container.open { display: flex; animation: chatIn 0.35s var(--transition-timing); }
@keyframes chatIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

.chatbot-header {
    background: var(--bg-2);
    color: var(--text-color-primary);
    border-bottom: 1px solid var(--line);
    padding: 14px 18px;
    display: flex; justify-content: space-between; align-items: center;
}
.chatbot-header-id { display: flex; align-items: center; gap: 11px; }
.chatbot-avatar {
    width: 34px; height: 34px; border-radius: 50%;
    background: var(--accent); color: #151413;
    display: flex; align-items: center; justify-content: center;
    font-family: var(--font-display); font-weight: var(--fw-med); font-size: var(--fs-body);
}
.chatbot-header h3 { font-size: var(--fs-body); font-weight: var(--fw-med); margin: 0; line-height: 1.1; }
.chatbot-status { font-size: var(--fs-meta); font-family: var(--font-mono); color: var(--muted); }
.chatbot-close {
    background: none; border: none; color: var(--muted); font-size: var(--fs-sub); cursor: pointer;
    width: 28px; height: 28px; display: flex; align-items: center; justify-content: center; border-radius: 50%;
    transition: background var(--transition-speed);
}
.chatbot-close:hover { background: var(--surface); color: var(--text); }

.quick-actions { padding: 13px 16px; border-bottom: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; }
.quick-action-btn {
    padding: 6px 12px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-sm);
    color: var(--muted); font-family: var(--font-body); font-size: var(--fs-meta); cursor: pointer;
    transition: all var(--transition-speed) var(--transition-timing);
}
.quick-action-btn:hover { background: var(--accent-grad); color: #07070A; border-color: transparent; }

.chatbot-messages {
    flex: 1; padding: 18px; overflow-y: auto; display: flex; flex-direction: column; gap: 14px;
    scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent;
}
.chatbot-messages::-webkit-scrollbar { width: 6px; }
.chatbot-messages::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 3px; }
.message { display: flex; }
.bot-message { justify-content: flex-start; }
.user-message { justify-content: flex-end; }
.message-content {
    max-width: 82%; padding: 11px 15px; border-radius: 16px; font-size: var(--fs-body); line-height: 1.5;
    font-family: var(--font-body); word-wrap: break-word;
}
.bot-message .message-content { background: var(--surface-2); color: var(--text); border-bottom-left-radius: 5px; border: 1px solid var(--line); }
.user-message .message-content { background: var(--accent-grad); color: #07070A; font-weight: var(--fw-med); border-bottom-right-radius: 5px; }

.suggested-questions { padding: 10px 18px; border-top: 1px solid var(--line); display: none; }
.suggested-questions.show { display: flex; flex-wrap: wrap; gap: 8px; }
.suggestion-bubble {
    padding: 6px 12px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-sm);
    color: var(--muted); font-size: var(--fs-meta); cursor: pointer; transition: all var(--transition-speed) var(--transition-timing);
    animation: fadeInUp 0.3s var(--transition-timing);
}
.suggestion-bubble:hover { background: var(--surface-2); color: var(--text); border-color: var(--accent); }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.chatbot-input-container { padding: 14px 16px; border-top: 1px solid var(--line); display: flex; gap: 10px; align-items: center; }
#chatbot-input {
    flex: 1; padding: 11px 16px; border: 1px solid var(--line); border-radius: var(--r-sm);
    background: rgba(255, 255, 255, 0.02); color: var(--text); font-family: var(--font-body); font-size: var(--fs-body); outline: none;
    transition: border-color var(--transition-speed) var(--transition-timing);
}
#chatbot-input:focus { border-color: var(--accent); }
#chatbot-input::placeholder { color: var(--faint); }
#chatbot-send {
    padding: 11px 20px; border-radius: var(--r-sm); border: none; cursor: pointer;
    background: var(--accent-grad); color: #07070A; font-family: var(--font-body); font-weight: var(--fw-med); font-size: var(--fs-body);
    white-space: nowrap; transition: transform 0.25s var(--transition-timing), box-shadow 0.25s var(--transition-timing);
}
#chatbot-send:hover { background: #ECFF6A; }
#chatbot-send:disabled { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none; }

/* Booking card — deterministic scheduling overlay inside the chat panel */
.booking-card {
    position: absolute; inset: 0; z-index: 6;
    background: rgba(10, 11, 16, 0.98);
    backdrop-filter: blur(8px);
    display: flex; flex-direction: column;
    animation: chatIn 0.28s var(--transition-timing);
}
.booking-card[hidden] { display: none; }
.booking-card-header { display: flex; align-items: center; gap: 10px; padding: 16px 18px; border-bottom: 1px solid var(--line); }
.booking-card-header h3 { margin: 0; font-size: var(--fs-body); font-weight: var(--fw-med); color: var(--text); }
.booking-back {
    background: none; border: 1px solid var(--line); color: var(--text);
    width: 30px; height: 30px; border-radius: 50%; cursor: pointer; font-size: var(--fs-body); line-height: 1;
    display: flex; align-items: center; justify-content: center;
    transition: all var(--transition-speed) var(--transition-timing);
}
.booking-back:hover { border-color: var(--accent); color: var(--accent); }
.booking-card-body {
    flex: 1; overflow-y: auto; padding: 16px 18px; display: flex; flex-direction: column; gap: 12px;
    scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent;
}
.booking-field { display: flex; flex-direction: column; gap: 5px; }
.booking-field > span { font-size: var(--fs-meta); color: var(--muted); font-family: var(--font-body); }
.booking-field > span em { color: var(--faint); font-style: normal; }
.booking-field input, .booking-field select, .booking-field textarea {
    width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px;
    background: rgba(255, 255, 255, 0.02); color: var(--text);
    font-family: var(--font-body); font-size: var(--fs-body); outline: none;
    transition: border-color var(--transition-speed) var(--transition-timing);
}
.booking-field textarea { resize: vertical; min-height: 44px; }
.booking-field input:focus, .booking-field select:focus, .booking-field textarea:focus { border-color: var(--accent); }
.booking-field input.invalid, .booking-field select.invalid { border-color: #ff6b6b; }
.booking-field select option { background: #0d0e14; color: var(--text); }
.booking-status { min-height: 18px; margin: 2px 0 0; font-size: var(--fs-meta); color: var(--muted); }
.booking-status.error { color: #ff8585; }
.booking-status.success { color: var(--accent); }
.booking-card-actions { display: flex; gap: 10px; padding: 14px 18px; border-top: 1px solid var(--line); }
.booking-btn-primary, .booking-btn-secondary {
    flex: 1; padding: 11px 16px; border-radius: var(--r-sm); cursor: pointer;
    font-family: var(--font-body); font-weight: var(--fw-med); font-size: var(--fs-body);
    transition: transform 0.2s var(--transition-timing), box-shadow 0.2s var(--transition-timing), opacity 0.2s;
}
.booking-btn-primary { border: none; background: var(--accent-grad); color: #07070A; }
.booking-btn-primary:hover { background: #ECFF6A; }
.booking-btn-primary:disabled { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none; }
.booking-btn-secondary { border: 1px solid var(--line); background: transparent; color: var(--muted); }
.booking-btn-secondary:hover { border-color: var(--line-strong); color: var(--text); }

/* Soft inline "open booking" prompt rendered under a bot message */
.booking-inline-prompt {
    align-self: flex-start;
    padding: 8px 14px; border-radius: var(--r-sm);
    background: var(--surface); border: 1px solid var(--accent);
    color: var(--text); font-family: var(--font-body); font-size: var(--fs-meta); cursor: pointer;
    transition: all var(--transition-speed) var(--transition-timing);
    animation: fadeInUp 0.3s var(--transition-timing);
}
.booking-inline-prompt:hover { background: var(--accent-grad); color: #07070A; border-color: transparent; }

.typing-indicator { display: flex; align-items: center; gap: 5px; padding: 12px 16px; background: var(--surface-2); border-radius: 16px; border-bottom-left-radius: 5px; max-width: 70px; }
.typing-indicator.enhanced { border: 1px solid var(--line); }
.typing-dot, .typing-dot.enhanced { width: 7px; height: 7px; background: var(--muted); border-radius: 50%; animation: typing 1.4s infinite ease-in-out; }
.typing-dot:nth-child(1), .typing-dot.enhanced:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2), .typing-dot.enhanced:nth-child(2) { animation-delay: -0.16s; }
@keyframes typing { 0%, 80%, 100% { opacity: 0.3; transform: scale(0.8); } 40% { opacity: 1; transform: scale(1); } }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 900px) {
    .project-slide-content { padding: 30px; max-width: 100%; }
    .project-slider { min-height: 620px; }
    /* Below the container width, cover would crop ~170px off each side of the
       1600x926 diagram artwork and cut the first column off. Fit the whole
       thing instead — smaller, but nothing is lost and the caption clears it. */
    .project-slide--diagram { background-size: contain; background-repeat: no-repeat; }
    .project-control-panel { grid-template-columns: repeat(3, 1fr); }
    .project-control-desc { display: none; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-hamburger { display: flex; }
    .hero { min-height: auto; padding: 0; }
    .hero-stage { min-height: 100svh; }
    .hero-content { padding: 130px 18px 80px; z-index: 10; }
    .hero-plane--bg { filter: brightness(0.5) saturate(0.55) contrast(1.02); }
    .hero-plane--veil {
        background:
            linear-gradient(180deg,
                rgba(21, 20, 19, 0.78) 0%,
                rgba(21, 20, 19, 0.42) 30%,
                rgba(21, 20, 19, 0.38) 58%,
                rgba(21, 20, 19, 0.94) 100%),
            radial-gradient(ellipse 90% 62% at 50% 46%,
                rgba(21, 20, 19, 0.78) 0%,
                rgba(21, 20, 19, 0.5) 48%,
                rgba(21, 20, 19, 0.2) 100%);
    }
    .hero-scroll { display: none; }
    .hero-kicker { padding: 7px 12px; gap: 8px; }
    .content-section { padding: 70px 0; }
    .content-section, .contact-section { scroll-margin-top: 32px; }
    .section-head { margin-bottom: 40px; }
    .timeline::before { left: 6px; }
    .experience-entry { padding-left: 34px; }
    .entry-head { flex-direction: column; gap: 2px; }
    .experience-entry .dates { white-space: normal; }
    .chatbot-container { width: calc(100vw - 32px); height: 82vh; right: 16px; left: 16px; bottom: 90px; }
    .chatbot-toggle { bottom: 18px; right: 18px; width: 54px; height: 54px; }
    .contact-form-container { padding: 24px; }
    .contact-section .container { grid-template-columns: 1fr; }
    .contact-section .section-head { grid-area: 1 / 1; }
    .contact-form-container { grid-area: 2 / 1; }
    .contact-links { grid-area: 3 / 1; margin-top: 26px; }
    .form-buttons { flex-direction: column; align-items: stretch; }
    .modal-content { padding: 24px; }
}

@media (max-width: 560px) {
    .project-slider { min-height: 560px; }
    .project-control-panel { grid-template-columns: repeat(2, 1fr); }
    .skills-list { grid-template-columns: 1fr; }
    .hero-actions { flex-direction: column; align-items: stretch; }
    .hero-socials { flex-wrap: wrap; }
}

/* ============================================================
   Reduced motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
    * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
    .js .reveal { opacity: 1 !important; transform: none !important; }
    .js .section-blur { opacity: 1 !important; filter: none !important; }
    .aurora-blob { animation: none !important; }
    .hero-plane { transform: none !important; }
    .hero-shader { display: none !important; }
    .hero-stage { background-image: url("assets/hero/science-collage.jpg"); }
}