:root {
    --bg: #0a0e14;
    --bg-alt: #0d131c;
    --surface: #111823;
    --surface-2: #16202e;
    --border: #1e2a3a;
    --border-strong: #2b3b52;
    --text: #c9d5e4;
    --text-dim: #7d8fa6;
    --text-bright: #eaf2fb;
    --accent: #4dd4a0;
    --accent-dim: #1f6d54;
    --accent-soft: rgba(77, 212, 160, 0.12);
    --warn: #e5b567;
    --danger: #e06c75;

    --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, "Cascadia Code", Consolas, monospace;

    --wrap: 1080px;
    --radius: 10px;
    --radius-sm: 6px;

    --header-h: 64px;
    --transition: 180ms cubic-bezier(0.4, 0, 0.2, 1);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-h) + 16px);
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    background-color: var(--bg);
    background-image:
        radial-gradient(900px 500px at 12% -8%, rgba(77, 212, 160, 0.07), transparent 60%),
        radial-gradient(700px 420px at 92% 4%, rgba(88, 140, 255, 0.06), transparent 62%),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: auto, auto, 48px 48px, 48px 48px;
    background-attachment: fixed;
    color: var(--text);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
    color: var(--text-bright);
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin: 0 0 0.5em;
}

h1 {
    font-size: clamp(2rem, 5vw, 3.1rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(1.5rem, 3.2vw, 2.1rem);
    font-weight: 700;
}

h3 {
    font-size: 1.05rem;
    font-weight: 600;
}

p {
    margin: 0 0 1em;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition), opacity var(--transition);
}

a:hover {
    color: var(--text-bright);
}

ul,
ol,
dl {
    margin: 0;
    padding: 0;
    list-style: none;
}

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

::selection {
    background: var(--accent-dim);
    color: var(--text-bright);
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    background: var(--accent);
    color: #04120c;
    padding: 10px 16px;
    z-index: 100;
    border-radius: 0 0 var(--radius-sm) 0;
    font-weight: 600;
}

.skip-link:focus {
    left: 0;
}

.wrap {
    width: 100%;
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================== HEADER ============================== */

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(10, 14, 20, 0.82);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition), background var(--transition);
}

.site-header.is-scrolled {
    border-bottom-color: var(--border);
    background: rgba(10, 14, 20, 0.95);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    height: var(--header-h);
}

.brand {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.98rem;
    color: var(--text-bright);
    letter-spacing: -0.01em;
}

.brand:hover {
    color: var(--text-bright);
}

.brand-prompt {
    color: var(--accent);
}

.brand-cursor {
    color: var(--accent);
    animation: blink 1.1s steps(1) infinite;
}

@keyframes blink {
    0%, 49% { opacity: 1; }
    50%, 100% { opacity: 0; }
}

.site-nav ul {
    display: flex;
    align-items: center;
    gap: 4px;
}

.site-nav a {
    display: block;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    color: var(--text-dim);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition), background var(--transition);
}

.site-nav a:hover {
    color: var(--text-bright);
    background: var(--surface);
}

.site-nav a.is-active {
    color: var(--accent);
    background: var(--accent-soft);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: 9px;
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    height: 1.5px;
    background: var(--text);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
}

/* =============================== HERO =============================== */

.hero {
    padding: clamp(64px, 11vw, 132px) 0 clamp(56px, 8vw, 96px);
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 64px);
    align-items: center;
}

.eyebrow {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--accent);
    margin-bottom: 14px;
}

.accent {
    color: var(--accent);
}

.lede {
    font-size: clamp(1rem, 1.6vw, 1.1rem);
    color: var(--text-dim);
    max-width: 54ch;
}

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

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 28px 0 34px;
}

.btn {
    display: inline-block;
    padding: 11px 22px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    font-size: 0.92rem;
    font-weight: 600;
    font-family: var(--font-body);
    cursor: pointer;
    transition: transform var(--transition), background var(--transition), border-color var(--transition), color var(--transition);
}

.btn-primary {
    background: var(--accent);
    color: #04120c;
}

.btn-primary:hover {
    background: #5febb4;
    color: #04120c;
    transform: translateY(-1px);
}

.btn-ghost {
    border-color: var(--border-strong);
    color: var(--text);
}

.btn-ghost:hover {
    border-color: var(--accent);
    color: var(--text-bright);
    transform: translateY(-1px);
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 32px;
    padding-top: 22px;
    border-top: 1px solid var(--border);
    font-size: 0.86rem;
    color: var(--text-dim);
}

.hero-meta strong {
    display: block;
    font-family: var(--font-mono);
    font-size: 1.3rem;
    color: var(--text-bright);
    font-weight: 700;
}

/* ============================= TERMINAL ============================= */

.terminal {
    background: #070a0f;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 24px 60px -24px rgba(0, 0, 0, 0.85);
}

.terminal-bar {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 11px 14px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex: none;
}

.dot-r { background: #ff5f57; }
.dot-y { background: #febc2e; }
.dot-g { background: #28c840; }

.terminal-title {
    margin-left: 8px;
    font-family: var(--font-mono);
    font-size: 0.74rem;
    color: var(--text-dim);
}

.terminal-body {
    margin: 0;
    padding: 18px 18px 22px;
    font-family: var(--font-mono);
    font-size: 0.79rem;
    line-height: 1.75;
    color: var(--text);
    white-space: pre-wrap;
    word-break: break-word;
    min-height: 268px;
}

.terminal-body .t-cmd { color: var(--accent); }
.terminal-body .t-out { color: var(--text-dim); }
.terminal-body .t-ok  { color: var(--accent); }
.terminal-body .t-key { color: var(--text-dim); }
.terminal-body .t-val { color: var(--text-bright); }

.terminal-body .t-caret {
    display: inline-block;
    width: 7px;
    height: 1em;
    margin-left: 2px;
    background: var(--accent);
    vertical-align: -0.15em;
    animation: blink 1.1s steps(1) infinite;
}

/* ============================= SECTIONS ============================= */

.section {
    padding: clamp(58px, 9vw, 104px) 0;
    border-top: 1px solid var(--border);
    scroll-margin-top: calc(var(--header-h) + 8px);
}

.section-alt {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.014), transparent);
}

.section-index {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--accent);
    letter-spacing: 0.16em;
    margin-bottom: 6px;
}

.section-lede {
    color: var(--text-dim);
    max-width: 60ch;
    margin-bottom: 34px;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: border-color var(--transition), transform var(--transition), background var(--transition);
}

.card:hover {
    border-color: var(--border-strong);
}

.card-mark {
    color: var(--accent);
    margin-right: 8px;
}

/* =============================== ABOUT ============================== */

.about-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 52px);
    align-items: start;
}

.about-card h3 {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-dim);
    margin-bottom: 18px;
}

.fact-list > div {
    display: grid;
    grid-template-columns: 96px 1fr;
    gap: 12px;
    padding: 10px 0;
    border-top: 1px solid var(--border);
    font-size: 0.9rem;
}

.fact-list > div:first-child {
    border-top: none;
    padding-top: 0;
}

.fact-list dt {
    color: var(--text-dim);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    padding-top: 3px;
}

.fact-list dd {
    margin: 0;
    color: var(--text);
}

.status-dot {
    display: inline-block;
    width: 7px;
    height: 7px;
    margin-right: 7px;
    border-radius: 50%;
    background: var(--accent);
    vertical-align: middle;
    box-shadow: 0 0 0 3px var(--accent-soft);
}

/* =============================== STACK ============================== */

.stack-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 18px;
}

.stack-grid h3 {
    display: flex;
    align-items: center;
    margin-bottom: 16px;
    font-size: 0.98rem;
}

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

.tag-list li {
    font-family: var(--font-mono);
    font-size: 0.76rem;
    padding: 4px 10px;
    border-radius: 999px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--text-dim);
}

.tag-list-sm li {
    font-size: 0.72rem;
}

/* ============================= PROJECTS ============================= */

.project {
    margin-bottom: 18px;
}

.project:hover {
    transform: translateY(-2px);
}

.project:last-of-type {
    margin-bottom: 0;
}

.project-head {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: space-between;
    gap: 6px 18px;
    margin-bottom: 12px;
}

.project-head h3 {
    margin: 0;
    font-size: 1.18rem;
}

.project-role {
    margin: 0;
    font-family: var(--font-mono);
    font-size: 0.76rem;
    color: var(--accent);
}

.project > p {
    color: var(--text-dim);
    max-width: 76ch;
}

.project-points {
    margin: 0 0 18px;
    padding: 0;
    display: grid;
    gap: 7px;
}

.project-points li {
    position: relative;
    padding-left: 20px;
    font-size: 0.9rem;
    color: var(--text);
}

.project-points li::before {
    content: "▹";
    position: absolute;
    left: 0;
    color: var(--accent);
}

.project-note {
    margin-top: 22px;
    font-size: 0.86rem;
    color: var(--text-dim);
    font-style: italic;
}

/* ============================ EXPERIENCE ============================ */

.timeline {
    position: relative;
    display: grid;
    gap: 8px;
    padding-left: 26px;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 5px;
    top: 10px;
    bottom: 10px;
    width: 1px;
    background: var(--border-strong);
}

.timeline > li {
    position: relative;
    padding: 16px 0 20px;
    border-bottom: 1px solid var(--border);
}

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

.timeline-marker {
    position: absolute;
    left: -26px;
    top: 26px;
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background: var(--bg-alt);
    border: 2px solid var(--accent-dim);
}

.timeline > li:hover .timeline-marker {
    border-color: var(--accent);
    background: var(--accent);
}

.timeline-period {
    font-family: var(--font-mono);
    font-size: 0.76rem;
    letter-spacing: 0.08em;
    color: var(--accent);
    margin-bottom: 4px;
}

.timeline-body h3 {
    margin-bottom: 2px;
}

.timeline-org {
    font-size: 0.86rem;
    color: var(--text-dim);
    margin-bottom: 8px;
}

.timeline-body p:last-child {
    margin: 0;
    color: var(--text-dim);
    font-size: 0.92rem;
    max-width: 72ch;
}

/* ============================= CONTACT ============================== */

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(215px, 1fr));
    gap: 14px;
}

.contact-card {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 20px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: border-color var(--transition), transform var(--transition);
}

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

.contact-label {
    font-family: var(--font-mono);
    font-size: 0.74rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-dim);
}

.contact-value {
    color: var(--text-bright);
    font-weight: 500;
    font-size: 0.95rem;
    word-break: break-word;
}

.copy-email {
    margin-top: 22px;
    padding: 10px 18px;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: border-color var(--transition), color var(--transition);
}

.copy-email:hover {
    border-color: var(--accent);
    color: var(--text-bright);
}

.copy-email.is-copied {
    border-color: var(--accent);
    color: var(--accent);
}

/* ============================== FOOTER ============================== */

.site-footer {
    border-top: 1px solid var(--border);
    padding: 28px 0;
    font-size: 0.84rem;
    color: var(--text-dim);
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 20px;
    align-items: center;
    justify-content: space-between;
}

.site-footer p {
    margin: 0;
}

.footer-note {
    font-family: var(--font-mono);
    font-size: 0.76rem;
}

/* ============================== REVEAL ============================== */

.reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 600ms ease, transform 600ms ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: none;
}

/* ============================ RESPONSIVE ============================ */

@media (max-width: 900px) {
    .hero-grid,
    .about-grid {
        grid-template-columns: 1fr;
    }

    .hero-terminal {
        order: -1;
    }

    .terminal-body {
        min-height: 220px;
    }
}

@media (max-width: 720px) {
    .nav-toggle {
        display: flex;
    }

    .wrap {
        padding: 0 18px;
    }

    .site-nav {
        position: absolute;
        top: var(--header-h);
        left: 0;
        right: 0;
        max-height: calc(100dvh - var(--header-h));
        overflow-y: auto;
        background: var(--bg-alt);
        border-bottom: 1px solid var(--border);
        display: none;
        padding: 10px 16px 16px;
    }

    .site-nav.is-open {
        display: block;
    }

    .site-nav ul {
        flex-direction: column;
        align-items: stretch;
        gap: 2px;
    }

    .site-nav a {
        padding: 11px 12px;
        font-size: 0.95rem;
    }

    .header-inner {
        position: relative;
    }

    .hero {
        padding-top: 48px;
    }

    .hero-actions .btn {
        flex: 1 1 180px;
        text-align: center;
    }

    .hero-meta {
        gap: 12px 24px;
    }

    .hero-meta strong {
        font-size: 1.15rem;
    }

    .terminal-body {
        font-size: 0.72rem;
        min-height: 200px;
        padding: 14px;
    }

    .card {
        padding: 18px;
    }

    .fact-list > div {
        grid-template-columns: 1fr;
        gap: 2px;
    }

    .project-head {
        flex-direction: column;
        gap: 4px;
    }

    .project:hover {
        transform: none;
    }

    .timeline {
        padding-left: 22px;
    }

    .timeline-marker {
        left: -22px;
    }

    .footer-inner {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 380px) {
    .wrap {
        padding: 0 14px;
    }

    .terminal-body {
        font-size: 0.66rem;
    }

    .tag-list li {
        font-size: 0.7rem;
        padding: 3px 8px;
    }
}

/* Touch devices: keep hover states from sticking after a tap */
@media (hover: none) {
    .card:hover,
    .contact-card:hover,
    .btn:hover {
        transform: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}

@media print {
    .site-header,
    .nav-toggle,
    .hero-terminal,
    .copy-email {
        display: none;
    }

    body {
        background: #fff;
        color: #111;
    }

    h1, h2, h3 {
        color: #000;
    }
}