/* ==========================================================================
   Wynston Wong - Portfolio stylesheet
   Layout system, colour tokens, components and responsive rules.
   ========================================================================== */

/* ---- Design tokens ------------------------------------------------------ */

:root {
    --bg: #080b14;
    --bg-soft: #0d1220;
    --surface: #111827;
    --surface-2: #16203a;
    --border: rgba(255, 255, 255, 0.09);
    --border-strong: rgba(255, 255, 255, 0.18);
    --text: #e9eff9;
    --text-soft: #b6c2d6;
    --muted: #8494ad;
    --accent: #4cc4ff;
    --accent-2: #9b8cff;
    --accent-3: #4ade80;
    --danger: #ff8a8a;
    --shadow: 0 18px 45px rgba(0, 0, 0, 0.45);
    --radius: 16px;
    --radius-sm: 10px;
    --max-width: 1120px;
    --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
    --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo,
        Consolas, "Liberation Mono", monospace;
}

[data-theme="light"] {
    --bg: #f6f8fc;
    --bg-soft: #ffffff;
    --surface: #ffffff;
    --surface-2: #eef2f9;
    --border: rgba(9, 20, 40, 0.1);
    --border-strong: rgba(9, 20, 40, 0.2);
    --text: #0d1728;
    --text-soft: #33445e;
    --muted: #5d6e88;
    --accent: #0b7fd4;
    --accent-2: #6a4ce0;
    --accent-3: #14884a;
    --shadow: 0 16px 38px rgba(15, 30, 60, 0.12);
}

/* ---- Base --------------------------------------------------------------- */

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 96px;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.68;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* Two soft light sources behind the content, fixed so they never scroll away. */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background:
        radial-gradient(58rem 30rem at 12% -8%, rgba(76, 196, 255, 0.16), transparent 60%),
        radial-gradient(46rem 26rem at 88% 4%, rgba(155, 140, 255, 0.14), transparent 62%);
}

[data-theme="light"] body::before {
    background:
        radial-gradient(58rem 30rem at 12% -8%, rgba(11, 127, 212, 0.12), transparent 60%),
        radial-gradient(46rem 26rem at 88% 4%, rgba(106, 76, 224, 0.1), transparent 62%);
}

.page {
    position: relative;
    z-index: 1;
}

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

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

a:hover {
    text-decoration: underline;
}

h1,
h2,
h3,
h4 {
    line-height: 1.2;
    margin: 0 0 0.5em;
    letter-spacing: -0.02em;
}

p {
    margin: 0 0 1em;
}

ul {
    margin: 0;
    padding-left: 1.15rem;
}

li + li {
    margin-top: 0.35rem;
}

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

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

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    background: var(--accent);
    color: #04121f;
    padding: 10px 16px;
    z-index: 100;
    font-weight: 600;
}

.skip-link:focus {
    left: 12px;
    top: 12px;
}

/* ---- Navigation --------------------------------------------------------- */

.nav {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    background: color-mix(in srgb, var(--bg) 82%, transparent);
    border-bottom: 1px solid var(--border);
}

.nav__inner {
    display: flex;
    align-items: center;
    gap: 18px;
    min-height: 68px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 11px;
    color: var(--text);
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-right: auto;
}

.brand:hover {
    text-decoration: none;
}

.brand__mark {
    width: 34px;
    height: 34px;
    flex: 0 0 34px;
    display: grid;
    place-items: center;
    border-radius: 9px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #04121f;
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 700;
}

.brand__text {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
}

.brand__text small {
    color: var(--muted);
    font-weight: 500;
    font-size: 11.5px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.nav__links {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav__links a {
    color: var(--text-soft);
    font-size: 14.5px;
    font-weight: 500;
    padding: 8px 13px;
    border-radius: 9px;
    transition: background 0.18s ease, color 0.18s ease;
}

.nav__links a:hover {
    color: var(--text);
    background: var(--surface-2);
    text-decoration: none;
}

.nav__links a[aria-current="page"] {
    color: var(--text);
    background: var(--surface-2);
}

.icon-btn {
    display: grid;
    place-items: center;
    width: 38px;
    height: 38px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text-soft);
    cursor: pointer;
    transition: border-color 0.18s ease, color 0.18s ease;
}

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

.icon-btn svg {
    width: 17px;
    height: 17px;
}

.nav__toggle {
    display: none;
}

/* ---- Hero --------------------------------------------------------------- */

.hero {
    padding: 84px 0 64px;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    font-family: var(--font-mono);
    font-size: 12.5px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
    background: color-mix(in srgb, var(--accent) 12%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
    padding: 7px 14px;
    border-radius: 999px;
    margin-bottom: 22px;
}

.eyebrow__dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent-3);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent-3) 22%, transparent);
}

.hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 46px;
    align-items: center;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 3.9rem);
    font-weight: 800;
    margin-bottom: 14px;
}

.gradient-text {
    background: linear-gradient(100deg, var(--accent), var(--accent-2) 70%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero__role {
    font-family: var(--font-mono);
    font-size: 15.5px;
    color: var(--accent-3);
    margin-bottom: 18px;
}

.hero__lede {
    font-size: 17.5px;
    color: var(--text-soft);
    max-width: 60ch;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 26px;
}

/* ---- Buttons ------------------------------------------------------------ */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 12px 20px;
    border-radius: 11px;
    border: 1px solid var(--border-strong);
    background: var(--surface);
    color: var(--text);
    font-size: 14.5px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: transform 0.16s ease, border-color 0.18s ease, background 0.18s ease;
}

.btn:hover {
    text-decoration: none;
    transform: translateY(-2px);
    border-color: var(--accent);
}

.btn--primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    border-color: transparent;
    color: #04121f;
}

.btn--primary:hover {
    border-color: transparent;
    filter: brightness(1.07);
}

.btn--ghost {
    background: transparent;
}

.btn svg {
    width: 16px;
    height: 16px;
}

/* ---- Portrait / hero card ---------------------------------------------- */

.hero__card {
    background: linear-gradient(160deg, var(--surface), var(--bg-soft));
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px;
    box-shadow: var(--shadow);
}

.terminal {
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.85;
    color: var(--text-soft);
}

.terminal__bar {
    display: flex;
    gap: 7px;
    margin-bottom: 16px;
}

.terminal__bar span {
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background: var(--border-strong);
}

.terminal__bar span:nth-child(1) {
    background: #ff6b6b;
}

.terminal__bar span:nth-child(2) {
    background: #ffd166;
}

.terminal__bar span:nth-child(3) {
    background: #4ade80;
}

.terminal b {
    color: var(--accent);
    font-weight: 600;
}

.terminal .ok {
    color: var(--accent-3);
}

/* ---- Stats -------------------------------------------------------------- */

.stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-top: 58px;
}

.stat {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 20px 22px;
}

.stat__value {
    font-size: 26px;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(120deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.stat__label {
    font-size: 13.5px;
    color: var(--muted);
    margin-top: 4px;
}

/* ---- Sections ----------------------------------------------------------- */

.section {
    padding: 72px 0;
    border-top: 1px solid var(--border);
}

.section--flush {
    border-top: none;
}

.section__head {
    max-width: 62ch;
    margin-bottom: 38px;
}

.section__head h2 {
    font-size: clamp(1.6rem, 3.4vw, 2.15rem);
    font-weight: 750;
}

.section__head p {
    color: var(--text-soft);
    margin-bottom: 0;
}

.kicker {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 10px;
}

/* ---- Cards -------------------------------------------------------------- */

.grid {
    display: grid;
    gap: 18px;
}

.grid--2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid--3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: transform 0.18s ease, border-color 0.18s ease;
}

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

.card h3 {
    font-size: 17.5px;
    margin-bottom: 8px;
}

.card p {
    color: var(--text-soft);
    font-size: 14.8px;
    margin-bottom: 0;
}

.card__icon {
    width: 40px;
    height: 40px;
    border-radius: 11px;
    display: grid;
    place-items: center;
    background: color-mix(in srgb, var(--accent) 14%, transparent);
    color: var(--accent);
    margin-bottom: 15px;
}

.card__icon svg {
    width: 20px;
    height: 20px;
}

/* ---- Tags & chips ------------------------------------------------------- */

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin-top: 15px;
}

.tag {
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: 0.02em;
    color: var(--text-soft);
    background: var(--surface-2);
    border: 1px solid var(--border);
    padding: 4px 10px;
    border-radius: 999px;
}

.tag--accent {
    color: var(--accent);
    background: color-mix(in srgb, var(--accent) 12%, transparent);
    border-color: color-mix(in srgb, var(--accent) 30%, transparent);
}

.tag--green {
    color: var(--accent-3);
    background: color-mix(in srgb, var(--accent-3) 12%, transparent);
    border-color: color-mix(in srgb, var(--accent-3) 30%, transparent);
}

/* ---- Project cards ------------------------------------------------------ */

.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
    margin-bottom: 30px;
}

.filter {
    font-family: inherit;
    font-size: 14px;
    font-weight: 550;
    color: var(--text-soft);
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 9px 16px;
    border-radius: 999px;
    cursor: pointer;
    transition: color 0.16s ease, border-color 0.16s ease, background 0.16s ease;
}

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

.filter[aria-pressed="true"] {
    color: #04121f;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    border-color: transparent;
}

/* On the light palette the accent gradient is dark enough to need white text. */
[data-theme="light"] .filter[aria-pressed="true"],
[data-theme="light"] .btn--primary {
    color: #ffffff;
}

.project {
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
    transition: transform 0.18s ease, border-color 0.18s ease;
}

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

.project[hidden] {
    display: none;
}

.project__top {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 10px;
}

.project__name {
    font-family: var(--font-mono);
    font-size: 15.5px;
    font-weight: 600;
    color: var(--text);
    margin: 0;
    word-break: break-word;
}

.project__name:hover {
    color: var(--accent);
    text-decoration: none;
}

.project__meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-left: auto;
    flex: 0 0 auto;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--muted);
}

.project__meta svg {
    width: 13px;
    height: 13px;
    vertical-align: -2px;
}

.project p {
    color: var(--text-soft);
    font-size: 14.5px;
    margin-bottom: 0;
}

.project__foot {
    margin-top: auto;
    padding-top: 16px;
}

.project__link {
    font-size: 13.5px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.project__link svg {
    width: 14px;
    height: 14px;
}

.empty {
    color: var(--muted);
    font-size: 15px;
}

/* ---- Timeline ----------------------------------------------------------- */

.timeline {
    position: relative;
    margin: 0;
    padding: 0 0 0 30px;
    list-style: none;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 7px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(180deg, var(--accent), var(--accent-2), transparent);
    opacity: 0.5;
}

.timeline > li {
    position: relative;
    padding-bottom: 34px;
    margin: 0;
}

.timeline > li:last-child {
    padding-bottom: 0;
}

.timeline > li::before {
    content: "";
    position: absolute;
    left: -30px;
    top: 7px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--bg);
    border: 2px solid var(--accent);
}

.timeline__when {
    font-family: var(--font-mono);
    font-size: 12.5px;
    color: var(--accent);
    letter-spacing: 0.03em;
    margin-bottom: 6px;
}

.timeline__what {
    font-size: 17px;
    font-weight: 700;
    margin: 0 0 3px;
}

.timeline__where {
    font-size: 14.5px;
    color: var(--muted);
    margin-bottom: 10px;
}

.timeline__body {
    color: var(--text-soft);
    font-size: 14.8px;
}

.timeline__body ul {
    padding-left: 1.1rem;
}

/* ---- Award rows --------------------------------------------------------- */

.award {
    display: grid;
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 20px;
    padding: 19px 0;
    border-bottom: 1px solid var(--border);
}

.award:last-child {
    border-bottom: none;
}

.award__when {
    font-family: var(--font-mono);
    font-size: 12.5px;
    color: var(--muted);
    padding-top: 4px;
}

.award__title {
    font-size: 16.5px;
    font-weight: 700;
    margin: 0 0 4px;
}

.award__desc {
    color: var(--text-soft);
    font-size: 14.8px;
    margin: 0;
}

.pill-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 14px;
}

/* ---- Skill panels ------------------------------------------------------- */

.skill {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
    border-left: 3px solid var(--accent);
}

.skill:nth-child(2n) {
    border-left-color: var(--accent-2);
}

.skill:nth-child(3n) {
    border-left-color: var(--accent-3);
}

.skill h3 {
    font-size: 16.5px;
    margin-bottom: 8px;
}

.skill p {
    color: var(--text-soft);
    font-size: 14.6px;
    margin-bottom: 0;
}

/* ---- Callout ------------------------------------------------------------ */

.callout {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 22px;
    padding: 30px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background:
        linear-gradient(135deg, color-mix(in srgb, var(--accent) 12%, transparent), transparent 60%),
        var(--surface);
}

.callout h3 {
    font-size: 20px;
    margin-bottom: 6px;
}

.callout p {
    color: var(--text-soft);
    font-size: 15px;
    margin: 0;
}

.callout__actions {
    margin-left: auto;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* ---- Contact ------------------------------------------------------------ */

.contact-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 22px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    transition: transform 0.16s ease, border-color 0.16s ease;
}

.contact-card:hover {
    text-decoration: none;
    transform: translateY(-3px);
    border-color: var(--accent);
}

.contact-card__icon {
    width: 42px;
    height: 42px;
    flex: 0 0 42px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: var(--surface-2);
    color: var(--accent);
}

.contact-card__icon svg {
    width: 20px;
    height: 20px;
}

.contact-card b {
    display: block;
    font-size: 15.5px;
}

.contact-card span {
    color: var(--muted);
    font-size: 13.5px;
    word-break: break-word;
}

/* ---- Footer ------------------------------------------------------------- */

.footer {
    border-top: 1px solid var(--border);
    padding: 30px 0 42px;
    color: var(--muted);
    font-size: 14px;
}

.footer__inner {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    align-items: center;
    justify-content: space-between;
}

.footer__links {
    display: flex;
    gap: 18px;
}

.footer a {
    color: var(--muted);
}

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

/* ---- Reveal on scroll --------------------------------------------------- */

.reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ---- Responsive --------------------------------------------------------- */

@media (max-width: 940px) {
    .hero__grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 34px;
    }

    .grid--3 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .callout__actions {
        margin-left: 0;
    }
}

@media (max-width: 720px) {
    .hero {
        padding: 56px 0 44px;
    }

    .nav__toggle {
        display: grid;
    }

    .nav__links {
        display: none;
        position: absolute;
        left: 0;
        right: 0;
        top: 100%;
        flex-direction: column;
        align-items: stretch;
        gap: 2px;
        padding: 10px 16px 16px;
        background: var(--bg-soft);
        border-bottom: 1px solid var(--border);
    }

    .nav__links.is-open {
        display: flex;
    }

    .nav__links a {
        padding: 12px 14px;
    }

    .grid--2,
    .grid--3 {
        grid-template-columns: minmax(0, 1fr);
    }

    .section {
        padding: 54px 0;
    }

    .award {
        grid-template-columns: minmax(0, 1fr);
        gap: 6px;
    }

    .terminal {
        font-size: 12.5px;
    }
}

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

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

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

/* ---- Print -------------------------------------------------------------- */

@media print {
    body::before,
    .nav,
    .footer,
    .hero__actions,
    .filters {
        display: none !important;
    }

    body {
        background: #fff;
        color: #000;
        font-size: 11.5pt;
    }

    .card,
    .project,
    .skill,
    .stat,
    .award {
        border: 1px solid #ccc;
        break-inside: avoid;
        box-shadow: none;
    }

    .gradient-text,
    .stat__value {
        color: #000;
        -webkit-text-fill-color: #000;
        background: none;
    }

    a {
        color: #000;
        text-decoration: none;
    }
}