/* ============================================
   Asaad Cheema — Personal Site
   Modern dark portfolio · ML engineer aesthetic
   ============================================ */

:root {
    --bg: #07070a;
    --bg-elev: #0d0d12;
    --bg-card: #11111a;
    --border: rgba(255, 255, 255, 0.07);
    --border-strong: rgba(255, 255, 255, 0.14);
    --text: #e8e8ee;
    --text-dim: #9a9aa8;
    --text-mute: #62626f;
    --accent: #a78bfa;
    --accent-2: #38bdf8;
    --accent-warm: #f0abfc;
    --gradient: linear-gradient(135deg, #a78bfa 0%, #38bdf8 50%, #f0abfc 100%);
    --gradient-soft: linear-gradient(135deg, rgba(167, 139, 250, 0.18), rgba(56, 189, 248, 0.18));
    --radius: 14px;
    --radius-sm: 8px;
    --max-w: 1180px;
    --pad-x: clamp(20px, 5vw, 64px);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    --font-serif: 'Instrument Serif', 'Times New Roman', serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', monospace;
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

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

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.65;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    min-height: 100vh;
}

::selection { background: var(--accent); color: #07070a; }

a { color: inherit; text-decoration: none; transition: color 0.2s var(--ease); }

img { max-width: 100%; display: block; }

/* ============== Background canvas ============== */
#bg-canvas {
    position: fixed;
    inset: 0;
    z-index: -1;
    opacity: 0.7;
    pointer-events: none;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% -10%, rgba(167, 139, 250, 0.15), transparent 50%),
        radial-gradient(ellipse at 80% 100%, rgba(56, 189, 248, 0.1), transparent 50%);
    z-index: -1;
    pointer-events: none;
}

/* ============== Nav ============== */
.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px var(--pad-x);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    background: rgba(7, 7, 10, 0.55);
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s var(--ease), background 0.3s var(--ease), padding 0.3s var(--ease);
}

.nav.scrolled {
    padding: 14px var(--pad-x);
    border-bottom-color: var(--border);
    background: rgba(7, 7, 10, 0.78);
}

.nav-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.logo-mark {
    display: inline-grid;
    place-items: center;
    width: 34px; height: 34px;
    border-radius: 10px;
    background: var(--gradient);
    color: #07070a;
    font-weight: 700;
    font-size: 13px;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    gap: 32px;
    font-size: 14.5px;
    font-weight: 450;
    color: var(--text-dim);
}

.nav-links a { position: relative; }

.nav-links a::after {
    content: '';
    position: absolute;
    left: 0; bottom: -6px;
    width: 0; height: 1px;
    background: var(--accent);
    transition: width 0.3s var(--ease);
}

.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }

.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 16px;
    border: 1px solid var(--border-strong);
    border-radius: 999px;
    font-size: 13.5px;
    font-weight: 500;
    transition: all 0.25s var(--ease);
}

.nav-cta:hover {
    background: var(--text);
    color: var(--bg);
    border-color: var(--text);
}

.nav-toggle { display: none; }

/* ============== Buttons ============== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 13px 22px;
    border-radius: 999px;
    font-size: 14.5px;
    font-weight: 500;
    letter-spacing: -0.01em;
    transition: all 0.3s var(--ease);
    cursor: pointer;
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--text);
    color: var(--bg);
}
.btn-primary:hover {
    background: #fff;
    transform: translateY(-1px);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.12);
}

.btn-ghost {
    background: transparent;
    color: var(--text);
    border-color: var(--border-strong);
}
.btn-ghost:hover {
    border-color: var(--text);
    background: rgba(255, 255, 255, 0.04);
}

.btn-lg { padding: 18px 32px; font-size: 16px; }

/* ============== Hero ============== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px var(--pad-x) 80px;
    position: relative;
}

.hero-inner {
    max-width: var(--max-w);
    width: 100%;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.45fr 1fr;
    gap: 80px;
    align-items: center;
}

.hero-text { min-width: 0; }

/* Portrait */
.hero-portrait {
    position: relative;
    justify-self: center;
    width: 100%;
    max-width: 380px;
    aspect-ratio: 4 / 5;
}

.portrait-frame {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: 18px;
    overflow: hidden;
    background:
        linear-gradient(180deg, var(--bg-elev), var(--bg-card));
    border: 1px solid var(--border-strong);
    isolation: isolate;
    display: grid;
    place-items: center;
    box-shadow: 0 30px 80px -30px rgba(167, 139, 250, 0.45),
                0 0 0 1px rgba(255, 255, 255, 0.04) inset;
}

.portrait-frame::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: 18px;
    padding: 1px;
    background: var(--gradient);
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
            mask-composite: exclude;
    opacity: 0.55;
    pointer-events: none;
    z-index: 2;
}

.portrait-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    position: relative;
    z-index: 1;
    transition: transform 0.6s var(--ease);
}

.portrait-frame:hover img { transform: scale(1.03); }

.portrait-fallback {
    position: absolute;
    inset: 0;
    display: none;
    place-items: center;
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 7rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    z-index: 0;
}

.portrait-frame.no-image .portrait-fallback { display: grid; }

.portrait-glow {
    position: absolute;
    inset: -30%;
    background: radial-gradient(ellipse at center, rgba(167, 139, 250, 0.18), transparent 60%);
    filter: blur(40px);
    z-index: -1;
    pointer-events: none;
}

.portrait-badge {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px 8px 12px;
    background: rgba(7, 7, 10, 0.78);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 999px;
    font-size: 12.5px;
    font-weight: 500;
    color: var(--text);
    white-space: nowrap;
    z-index: 3;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

.badge-dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: #4ade80;
    box-shadow: 0 0 10px #4ade80;
    animation: pulse 2.2s ease-in-out infinite;
}

/* Today / Learning card under portrait */
.today-card {
    margin-top: 20px;
    padding: 18px 18px 16px;
    background: rgba(255, 255, 255, 0.025);
    border: 1px solid var(--border);
    border-radius: 12px;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.today-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 14px;
}

.today-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.today-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 12px;
    line-height: 1.5;
    letter-spacing: -0.005em;
    color: var(--text);
}

.today-list strong {
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 13px;
    color: var(--text);
    letter-spacing: -0.01em;
}

.today-icon {
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--accent);
    opacity: 0.85;
}

.today-funfact {
    margin-top: 4px;
    padding-top: 10px;
    border-top: 1px dashed var(--border);
}

.funfact-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--bg);
    background: var(--gradient);
    padding: 2px 8px;
    border-radius: 999px;
    font-weight: 600;
    margin-right: 6px;
    vertical-align: middle;
}

.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 7px 14px;
    border: 1px solid var(--border-strong);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.03);
    font-size: 13px;
    color: var(--text-dim);
    margin-bottom: 32px;
}

.status-dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: #4ade80;
    box-shadow: 0 0 12px #4ade80, 0 0 24px rgba(74, 222, 128, 0.4);
    animation: pulse 2.2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(0.85); }
}

.hero-title {
    font-size: clamp(2.6rem, 7vw, 5.4rem);
    font-weight: 600;
    line-height: 1.05;
    letter-spacing: -0.035em;
    margin-bottom: 32px;
    max-width: 16ch;
}

.hero-title em {
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 400;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: -0.01em;
}

.hero-sub {
    font-size: clamp(1.05rem, 1.6vw, 1.25rem);
    color: var(--text-dim);
    line-height: 1.65;
    max-width: 62ch;
    margin-bottom: 44px;
}

.hero-sub strong { color: var(--text); font-weight: 500; }

.hero-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.hero-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 13.5px;
    color: var(--text-mute);
    font-family: var(--font-mono);
    flex-wrap: wrap;
}

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

.scroll-cue {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    font-size: 11px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-mute);
}

.scroll-line {
    width: 1px; height: 40px;
    background: linear-gradient(to bottom, var(--text-mute), transparent);
    position: relative;
    overflow: hidden;
}

.scroll-line::after {
    content: '';
    position: absolute;
    top: -20px; left: 0;
    width: 100%; height: 20px;
    background: var(--accent);
    animation: scroll-down 2.4s var(--ease) infinite;
}

@keyframes scroll-down {
    0% { top: -20px; }
    100% { top: 40px; }
}

/* ============== Now / Currently working on ============== */
.now-section {
    padding: 40px var(--pad-x) 60px;
    position: relative;
}

.now-inner {
    max-width: var(--max-w);
    margin: 0 auto;
}

.now-head {
    text-align: center;
    margin-bottom: 40px;
    max-width: 760px;
    margin-left: auto;
    margin-right: auto;
}

.now-head .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 14px;
}

.now-dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: #4ade80;
    box-shadow: 0 0 10px #4ade80;
    animation: pulse 2.2s ease-in-out infinite;
}

.now-title {
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 600;
    letter-spacing: -0.025em;
    line-height: 1.15;
}

.now-title em {
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 400;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.now-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 18px;
}

.now-tag {
    font-family: var(--font-sans);
    font-style: normal;
    font-size: 0.85em;
    font-weight: 500;
    color: var(--text-dim);
    background: none;
    -webkit-background-clip: initial;
    background-clip: initial;
    -webkit-text-fill-color: var(--text-dim);
    padding: 4px 10px;
    border: 1px solid var(--border-strong);
    border-radius: 999px;
    margin-left: 6px;
    white-space: nowrap;
    letter-spacing: -0.01em;
}

.now-card {
    position: relative;
    background: linear-gradient(180deg, rgba(167, 139, 250, 0.06), rgba(56, 189, 248, 0.03));
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px 24px;
    overflow: hidden;
    transition: all 0.35s var(--ease);
}

.now-card::after {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 2px;
    background: var(--gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s var(--ease);
}

.now-card:hover {
    transform: translateY(-3px);
    border-color: var(--border-strong);
}
.now-card:hover::after { transform: scaleX(1); }

.now-card-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 12px;
}

.now-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.015em;
    margin-bottom: 10px;
}

.now-card p {
    color: var(--text-dim);
    font-size: 14px;
    line-height: 1.6;
}

/* ============== Sections ============== */
.section {
    padding: 120px var(--pad-x);
    max-width: var(--max-w);
    margin: 0 auto;
    position: relative;
}

.section-grid {
    display: grid;
    grid-template-columns: 1fr 1.7fr;
    gap: 80px;
    margin-bottom: 72px;
    align-items: start;
}

.eyebrow {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.06em;
    color: var(--text-mute);
    margin-bottom: 16px;
    text-transform: uppercase;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    line-height: 1.05;
    letter-spacing: -0.03em;
}

.section-body { padding-top: 8px; }

.lead {
    font-size: 1.15rem;
    color: var(--text);
    line-height: 1.65;
    margin-bottom: 20px;
    font-weight: 400;
}

.section-body p {
    color: var(--text-dim);
    max-width: 65ch;
    margin-bottom: 16px;
}

.section-body p strong { color: var(--text); font-weight: 500; }
.section-body em { font-family: var(--font-serif); font-style: italic; font-weight: 400; }

.edu-link {
    color: var(--accent);
    font-weight: 500;
    border-bottom: 1px solid rgba(167, 139, 250, 0.35);
    transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.edu-link:hover {
    color: var(--accent-warm);
    border-bottom-color: var(--accent-warm);
}

/* ============== Stats ============== */
.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.stat {
    background: var(--bg-elev);
    padding: 36px 28px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: background 0.3s var(--ease);
}

.stat:hover { background: var(--bg-card); }

.stat-num {
    font-size: clamp(2.4rem, 4vw, 3.2rem);
    font-weight: 600;
    letter-spacing: -0.04em;
    line-height: 1;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.stat-label {
    font-size: 13.5px;
    color: var(--text-dim);
    line-height: 1.5;
}

/* ============== Timeline ============== */
.timeline {
    list-style: none;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 220px; top: 12px; bottom: 12px;
    width: 1px;
    background: var(--border);
}

.timeline-item {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 60px;
    padding: 40px 0;
    border-bottom: 1px solid var(--border);
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 215px; top: 52px;
    width: 11px; height: 11px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 4px var(--bg), 0 0 16px var(--accent);
}

.timeline-item:last-child { border-bottom: none; }

.timeline-time { display: flex; flex-direction: column; gap: 6px; }

.time-range {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text);
    font-weight: 500;
}

.time-loc {
    font-size: 12.5px;
    color: var(--text-mute);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.timeline-body h3 {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.015em;
    margin-bottom: 4px;
}

.timeline-body .company {
    display: block;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--accent);
    margin-bottom: 16px;
}

.timeline-body p, .timeline-body li {
    color: var(--text-dim);
    line-height: 1.65;
}

.timeline-body strong { color: var(--text); font-weight: 500; }

.timeline-body ul {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.timeline-body li {
    padding-left: 22px;
    position: relative;
}

.timeline-body li::before {
    content: '';
    position: absolute;
    left: 0; top: 11px;
    width: 12px; height: 1px;
    background: var(--text-mute);
}

.experience-note {
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px dashed var(--border);
    color: var(--text-dim);
    font-size: 14px;
}

.experience-note em {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1.05rem;
    color: var(--text);
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ============== Projects ============== */
.projects {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.project {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    transition: all 0.4s var(--ease);
    position: relative;
    overflow: hidden;
}

.project::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-soft);
    opacity: 0;
    transition: opacity 0.4s var(--ease);
    pointer-events: none;
}

.project:hover {
    transform: translateY(-4px);
    border-color: var(--border-strong);
}
.project:hover::before { opacity: 1; }

.project > * { position: relative; }

.project-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: 0.04em;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 16px;
}

.project-title {
    font-size: 1.35rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.25;
    margin-bottom: 14px;
}

.project p {
    color: var(--text-dim);
    margin-bottom: 22px;
    font-size: 15px;
    line-height: 1.65;
}

.project em { font-family: var(--font-serif); font-style: italic; }

.project-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding-top: 18px;
    border-top: 1px solid var(--border);
}

.project-meta span {
    font-family: var(--font-mono);
    font-size: 11.5px;
    color: var(--text-mute);
    padding: 4px 10px;
    border: 1px solid var(--border);
    border-radius: 999px;
}

/* ============== Collaborators ============== */
.section-collab { text-align: center; }

.collab-head {
    max-width: 720px;
    margin: 0 auto 56px;
}

.collab-head .eyebrow { display: inline-block; margin-bottom: 16px; }

.collab-head .section-title { margin-bottom: 16px; }

.collab-lead {
    color: var(--text-dim);
    font-size: 1.05rem;
    max-width: 56ch;
    margin: 0 auto;
}

.collab-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 18px;
    max-width: 1100px;
    margin: 0 auto;
}

.collab-card {
    flex: 0 1 200px;
}

.collab-card {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 38px 28px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    transition: all 0.35s var(--ease);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.collab-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-soft);
    opacity: 0;
    transition: opacity 0.4s var(--ease);
    pointer-events: none;
}

.collab-card:hover {
    transform: translateY(-3px);
    border-color: var(--border-strong);
}
.collab-card:hover::before { opacity: 0.6; }

.collab-card > * { position: relative; }

.collab-mark {
    position: relative;
    width: 100%;
    height: 84px;
    display: grid;
    place-items: center;
    background: #ffffff;
    border-radius: 10px;
    padding: 12px 18px;
    transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.collab-mark img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    transition: transform 0.4s var(--ease);
}

.collab-card:hover .collab-mark {
    transform: translateY(-1px);
    box-shadow: 0 12px 30px -10px rgba(167, 139, 250, 0.35);
}

.collab-card:hover .collab-mark img {
    transform: scale(1.04);
}

.collab-fallback {
    display: none;
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 2.6rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1;
}

.collab-mark.no-image .collab-fallback { display: inline-block; }

.collab-info h4 {
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: -0.015em;
    margin-bottom: 6px;
}

.collab-info span {
    display: block;
    font-family: var(--font-mono);
    font-size: 12.5px;
    color: var(--text-mute);
    line-height: 1.5;
}

/* ============== Publications ============== */
.pub-list { list-style: none; }

.pub {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 32px;
    padding: 22px 0;
    border-bottom: 1px solid var(--border);
    transition: padding-left 0.3s var(--ease);
}

.pub:hover {
    padding-left: 12px;
}

.pub-year {
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--text-mute);
    padding-top: 3px;
}

.pub-body h4 {
    font-size: 1.05rem;
    font-weight: 500;
    line-height: 1.4;
    letter-spacing: -0.01em;
    margin-bottom: 4px;
}

.pub .venue {
    font-family: var(--font-mono);
    font-size: 12.5px;
    color: var(--accent);
}

/* ============== Talks ============== */
.talks {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.talk {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 28px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    position: relative;
    overflow: hidden;
    transition: all 0.4s var(--ease);
}

.talk::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-soft);
    opacity: 0;
    transition: opacity 0.4s var(--ease);
    pointer-events: none;
}

.talk:hover {
    transform: translateY(-4px);
    border-color: var(--border-strong);
}
.talk:hover::before { opacity: 1; }

.talk > * { position: relative; }

.talk-date {
    display: inline-block;
    align-self: flex-start;
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--bg);
    background: var(--gradient);
    padding: 5px 11px;
    border-radius: 999px;
    font-weight: 600;
}

.talk-title {
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.015em;
    margin: 0;
}

.talk-venue {
    font-family: var(--font-mono);
    font-size: 12.5px;
    color: var(--accent);
    line-height: 1.5;
}

.talk-co {
    color: var(--text-dim);
    font-size: 14px;
    line-height: 1.6;
    margin: 0;
}

.talk-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.talk-meta span {
    font-family: var(--font-mono);
    font-size: 11.5px;
    color: var(--text-mute);
    padding: 4px 10px;
    border: 1px solid var(--border);
    border-radius: 999px;
}

/* ============== Skills ============== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.skill-group {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
}

.skill-group h4 {
    font-family: var(--font-mono);
    font-size: 12.5px;
    color: var(--text-mute);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 18px;
    font-weight: 500;
}

.chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.chips span {
    padding: 6px 13px;
    background: rgba(255, 255, 255, 0.035);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 13px;
    color: var(--text);
    font-weight: 450;
    transition: all 0.2s var(--ease);
}

.chips span:hover {
    background: rgba(167, 139, 250, 0.1);
    border-color: var(--accent);
    color: var(--accent);
}

/* ============== Education ============== */
.edu-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 80px;
}

.edu-card {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: all 0.3s var(--ease);
}

.edu-card:hover {
    border-color: var(--border-strong);
    transform: translateY(-2px);
}

.edu-degree {
    display: block;
    font-family: var(--font-mono);
    font-size: 11.5px;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 14px;
}

.edu-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 8px;
}

.edu-meta {
    display: block;
    font-size: 13px;
    color: var(--text-mute);
    margin-bottom: 14px;
    font-family: var(--font-mono);
}

.edu-card p {
    color: var(--text-dim);
    font-size: 14px;
    line-height: 1.55;
}

.edu-card em {
    font-family: var(--font-serif);
    font-style: italic;
    color: var(--text);
}

/* Certifications */
.certs-heading {
    font-family: var(--font-mono);
    font-size: 12.5px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-mute);
    margin-bottom: 24px;
    font-weight: 500;
}

.cert-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 16px;
}

.cert {
    display: block;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 22px;
    transition: all 0.3s var(--ease);
}

.cert:hover {
    border-color: var(--accent);
    background: var(--bg-card);
    transform: translateY(-2px);
}

.cert-issuer {
    display: block;
    font-family: var(--font-mono);
    font-size: 11.5px;
    color: var(--text-mute);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 10px;
}

.cert h5 {
    font-size: 14.5px;
    font-weight: 500;
    line-height: 1.4;
    margin-bottom: 8px;
}

.cert-id {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--accent);
}

/* ============== Hobbies / Photography ============== */
.section-hobbies .lead em {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1.4rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: block;
    margin-bottom: 18px;
}

.hobby-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 0 0 40px;
    justify-content: center;
}

.hobby-chip {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px 10px 14px;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: 14px;
    color: var(--text);
    transition: all 0.3s var(--ease);
    position: relative;
    overflow: hidden;
}

.hobby-chip::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-soft);
    opacity: 0;
    transition: opacity 0.4s var(--ease);
    pointer-events: none;
}

.hobby-chip:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}
.hobby-chip:hover::before { opacity: 1; }

.hobby-chip > * { position: relative; }

.hobby-icon {
    display: inline-grid;
    place-items: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--gradient-soft);
    color: var(--accent);
    flex-shrink: 0;
}

.hobby-label {
    font-weight: 450;
    letter-spacing: -0.005em;
}

.photo-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-flow: dense;
    gap: 14px;
    margin-top: 12px;
}

.photo-item {
    margin: 0;
    aspect-ratio: 3 / 4;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    transition: transform 0.4s var(--ease), border-color 0.4s var(--ease);
}

.photo-item.photo-wide {
    grid-column: span 2;
    aspect-ratio: 3 / 2;
}

.photo-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.7s var(--ease), filter 0.5s var(--ease);
    filter: saturate(0.95) brightness(0.96);
}

.photo-item:hover {
    transform: translateY(-3px);
    border-color: var(--border-strong);
}

.photo-item:hover img {
    transform: scale(1.04);
    filter: saturate(1.05) brightness(1.02);
}

@media (max-width: 960px) {
    .photo-grid { grid-template-columns: repeat(2, 1fr); }
    .photo-item.photo-wide { grid-column: span 2; aspect-ratio: 3 / 2; }
}

@media (max-width: 560px) {
    .photo-grid { grid-template-columns: 1fr; }
    .photo-item, .photo-item.photo-wide { grid-column: span 1; }
}

/* ============== Contact ============== */
.section-contact {
    padding: 140px var(--pad-x);
    text-align: center;
    max-width: var(--max-w);
    margin: 0 auto;
}

.contact-inner { max-width: 720px; margin: 0 auto; }

.contact-title {
    font-size: clamp(2.4rem, 6vw, 4.4rem);
    font-weight: 600;
    line-height: 1.05;
    letter-spacing: -0.035em;
    margin: 16px 0 24px;
}

.contact-title em {
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 400;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.contact-lead {
    color: var(--text-dim);
    font-size: 1.1rem;
    margin-bottom: 40px;
}

.contact-actions { margin-bottom: 32px; }

.contact-links {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
    font-family: var(--font-mono);
    font-size: 13.5px;
    color: var(--text-mute);
}

.contact-links a {
    position: relative;
    padding-bottom: 2px;
}

.contact-links a::after {
    content: '';
    position: absolute;
    left: 0; bottom: 0;
    width: 100%; height: 1px;
    background: var(--text-mute);
    transition: background 0.2s var(--ease);
}

.contact-links a:hover { color: var(--accent); }
.contact-links a:hover::after { background: var(--accent); }

/* ============== Footer ============== */
.footer {
    border-top: 1px solid var(--border);
    padding: 32px var(--pad-x);
}

.footer-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 12.5px;
    color: var(--text-mute);
}

/* ============== Reveal animations ============== */
[data-reveal] {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

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

/* ============== Responsive ============== */
@media (max-width: 960px) {
    .hero-inner { grid-template-columns: 1fr; gap: 48px; }
    .hero-portrait { max-width: 260px; order: -1; }
    .section-grid { grid-template-columns: 1fr; gap: 32px; margin-bottom: 56px; }
    .stats { grid-template-columns: repeat(2, 1fr); }
    .collab-grid { grid-template-columns: 1fr; }
    .now-cards { grid-template-columns: 1fr; }
    .timeline::before { left: 6px; }
    .timeline-item { grid-template-columns: 1fr; gap: 16px; padding: 32px 0; padding-left: 32px; }
    .timeline-item::before { left: 1px; top: 38px; }
    .projects, .skills-grid, .edu-grid, .talks { grid-template-columns: 1fr; }
    .pub { grid-template-columns: 1fr; gap: 4px; }
    .nav-links { display: none; }
    .nav-cta { display: none; }
    .nav-toggle { display: flex; flex-direction: column; gap: 4px; background: none; border: none; cursor: pointer; padding: 8px; }
    .nav-toggle span { width: 22px; height: 1.5px; background: var(--text); transition: all 0.3s var(--ease); }
    .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
    .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
    .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }
    .nav-links.open {
        display: flex;
        position: fixed;
        top: 64px; left: 0; right: 0;
        background: rgba(7, 7, 10, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px var(--pad-x);
        gap: 18px;
        border-bottom: 1px solid var(--border);
    }
    .footer-inner { flex-direction: column; gap: 8px; }
    .section { padding: 80px var(--pad-x); }
    .hero { padding: 100px var(--pad-x) 60px; }
}

@media (max-width: 560px) {
    .stats { grid-template-columns: 1fr; }
    .hero-actions { flex-direction: column; align-items: stretch; }
    .hero-actions .btn { justify-content: center; }
}

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