:root {
    --display: "Bricolage Grotesque", "Avenir Next", sans-serif;
    --sans: "Hanken Grotesk", -apple-system, "Segoe UI", sans-serif;

    /* type scale (1.333) */
    --fs-xs: 0.75rem;
    --fs-sm: 0.875rem;
    --fs-base: 1rem;
    --fs-md: 1.333rem;
    --fs-lg: 1.777rem;
    --fs-xl: 2.369rem;
    --fs-hero: clamp(2.6rem, 6.5vw, 4.8rem);

    /* spacing (8px base) */
    --sp-1: 0.5rem;
    --sp-2: 1rem;
    --sp-3: 1.5rem;
    --sp-4: 2rem;
    --sp-6: 3rem;
    --sp-8: 4rem;
    --sp-10: 5rem;
    --sp-12: 6rem;
    --sp-16: 8rem;

    --radius: 12px;

    /* grain texture, tiled */
    --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");

    /* light: green-tinted bone + deep forest + amber */
    --bg: #EFF1E6;
    --ink: #16241B;
    --muted: #55665A;
    --accent: #8A5C0E;              /* amber, darkened for small text on bone */
    --amber: #E5A33C;               /* full amber for buttons & dark surfaces */
    --amber-strong: #D18E24;
    --on-amber: #1B2A20;
    --rule: #DAE0CC;
    --card: #F8FAF0;
    --card-shadow: 0 10px 30px rgba(22, 36, 27, 0.09);
    --amber-wash: rgba(229, 163, 60, 0.13);
    --moss-wash: rgba(28, 58, 45, 0.08);
    --forest-1: #142B21;            /* band gradient ends */
    --forest-2: #1E4432;
    --forest-glow: rgba(76, 140, 104, 0.5);
    --forest-amber-glow: rgba(229, 163, 60, 0.16);
    --forest-ink: #ECEFE0;
    --forest-muted: #A9BAA8;

    --max: 1080px;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg: #12190F;
        --ink: #E6EADB;
        --muted: #9BA894;
        --accent: #EBB55C;
        --amber: #E5A33C;
        --amber-strong: #F0B65A;
        --on-amber: #1B2A20;
        --rule: #26301F;
        --card: #1A231A;
        --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        --amber-wash: rgba(229, 163, 60, 0.1);
        --moss-wash: rgba(120, 160, 130, 0.08);
        --forest-1: #0F221A;
        --forest-2: #1A3A2B;
        --forest-glow: rgba(76, 140, 104, 0.4);
        --forest-amber-glow: rgba(229, 163, 60, 0.13);
        --forest-ink: #ECEFE0;
        --forest-muted: #A9BAA8;
    }
}

:root[data-theme="dark"] {
    --bg: #12190F;
    --ink: #E6EADB;
    --muted: #9BA894;
    --accent: #EBB55C;
    --amber: #E5A33C;
    --amber-strong: #F0B65A;
    --on-amber: #1B2A20;
    --rule: #26301F;
    --card: #1A231A;
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    --amber-wash: rgba(229, 163, 60, 0.1);
    --moss-wash: rgba(120, 160, 130, 0.08);
    --forest-1: #0F221A;
    --forest-2: #1A3A2B;
    --forest-glow: rgba(76, 140, 104, 0.4);
    --forest-amber-glow: rgba(229, 163, 60, 0.13);
    --forest-ink: #ECEFE0;
    --forest-muted: #A9BAA8;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--sans), sans-serif;
    font-weight: 400;
    background: var(--bg);
    color: var(--ink);
    font-size: var(--fs-base);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.3s, color 0.3s;
}

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

    *, *::before, *::after {
        transition: none !important;
    }

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

a {
    color: var(--ink);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
    text-decoration-color: var(--muted);
}

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

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

.wrap {
    max-width: var(--max);
    margin: 0 auto;
    padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

/* scroll-reveal: quiet fade-up as sections enter */
.reveal {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.5s ease, transform 0.5s ease, background-color 0.3s, color 0.3s, box-shadow 0.3s;
}

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

/* section scaffold: one even rhythm between all blocks */
section {
    padding-top: var(--sp-16);
}

.sec-head {
    margin-bottom: var(--sp-6);
}

h2 {
    font-family: var(--display), sans-serif;
    font-weight: 650;
    font-size: var(--fs-xl);
    line-height: 1.08;
    letter-spacing: -0.01em;
}

h2 em, h1 em {
    font-style: normal;
    color: var(--accent);
}

.section-intro {
    color: var(--muted);
    max-width: 58ch;
    margin-top: var(--sp-2);
    text-wrap: pretty;
}

/* ============ forest band: header + hero ============ */
.band {
    position: relative;
    background:
        radial-gradient(56rem 30rem at 88% 0%, var(--forest-glow), transparent 62%),
        radial-gradient(44rem 26rem at 4% 100%, var(--forest-amber-glow), transparent 60%),
        linear-gradient(160deg, var(--forest-1) 0%, var(--forest-2) 100%);
    color: var(--forest-ink);
    overflow: hidden;
}

.band::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: var(--grain);
    opacity: 0.07;
    pointer-events: none;
}

.band > * {
    position: relative;
}

header .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-3);
    padding-top: var(--sp-2);
    padding-bottom: var(--sp-2);
}

.wordmark {
    font-family: var(--display), sans-serif;
    font-weight: 650;
    font-size: var(--fs-md);
    text-decoration: none;
    color: var(--forest-ink);
}

.wordmark:hover {
    color: var(--forest-ink);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--sp-4);
}

nav {
    display: flex;
    gap: var(--sp-3);
}

nav a {
    font-size: var(--fs-sm);
    font-weight: 500;
    color: var(--forest-muted);
    text-decoration: none;
}

nav a:hover {
    color: var(--amber);
}

#theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border: 1px solid rgba(236, 239, 224, 0.3);
    border-radius: var(--radius);
    background: transparent;
    color: var(--forest-muted);
    cursor: pointer;
    font-size: var(--fs-sm);
    line-height: 1;
}

#theme-toggle:hover {
    color: var(--amber);
    border-color: var(--amber);
}

.icon-sun {
    display: none;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .icon-sun {
        display: inline;
    }

    :root:not([data-theme="light"]) .icon-moon {
        display: none;
    }
}

:root[data-theme="dark"] .icon-sun {
    display: inline;
}

:root[data-theme="dark"] .icon-moon {
    display: none;
}

@media (max-width: 560px) {
    nav {
        gap: var(--sp-2);
    }

    .header-right {
        gap: var(--sp-2);
    }
}

/* ---- hero ---- */
.hero {
    padding-block: var(--sp-10);
}

.kicker {
    font-size: var(--fs-sm);
    font-weight: 500;
    color: var(--amber);
    margin-bottom: var(--sp-2);
}

.hero h1 {
    font-family: var(--display), sans-serif;
    font-weight: 700;
    font-size: var(--fs-hero);
    line-height: 1.04;
    letter-spacing: -0.015em;
    max-width: 18ch;
    color: var(--forest-ink);
}

.hero h1 em {
    color: var(--amber);
}

.lede {
    margin-top: var(--sp-3);
    max-width: 46ch;
    color: var(--forest-muted);
    font-size: var(--fs-md);
    line-height: 1.5;
}

.hero .actions {
    margin-top: var(--sp-4);
    display: flex;
    gap: var(--sp-4);
    align-items: center;
    flex-wrap: wrap;
}

.hero .ghost {
    color: var(--forest-muted);
}

.hero .ghost:hover {
    color: var(--amber);
}

/* the single filled action per view */
.btn {
    display: inline-block;
    background: var(--amber);
    color: var(--on-amber);
    font-size: var(--fs-sm);
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    text-decoration: none;
    box-shadow: 0 6px 18px rgba(229, 163, 60, 0.28);
}

.btn:hover {
    background: var(--amber-strong);
    color: var(--on-amber);
}

.btn:active {
    transform: scale(0.98);
}

.ghost {
    font-size: var(--fs-sm);
    font-weight: 500;
    color: var(--muted);
}

/* ---- facts rail ---- */
.facts {
    border-bottom: 1px solid var(--rule);
}

.facts .wrap {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-4);
    padding-top: var(--sp-4);
    padding-bottom: var(--sp-4);
}

.fact-label {
    display: block;
    font-size: var(--fs-sm);
    color: var(--muted);
    margin-bottom: 0.15rem;
}

.facts strong {
    font-family: var(--display), sans-serif;
    font-weight: 600;
    font-size: var(--fs-md);
}

@media (max-width: 720px) {
    .facts .wrap {
        grid-template-columns: 1fr;
        gap: var(--sp-2);
    }
}

/* ---- process: numbered flow, amber badges ---- */
.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-6);
}

.step {
    display: flex;
    gap: var(--sp-2);
    align-items: flex-start;
}

.step .num {
    flex: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.4rem;
    height: 2.4rem;
    border-radius: 50%;
    background: var(--amber-wash);
    color: var(--accent);
    font-family: var(--display), sans-serif;
    font-weight: 700;
    font-size: var(--fs-md);
}

.step h3 {
    font-family: var(--display), sans-serif;
    font-size: var(--fs-md);
    font-weight: 600;
    margin-bottom: var(--sp-1);
}

.step p {
    color: var(--muted);
    font-size: var(--fs-sm);
    line-height: 1.65;
}

@media (max-width: 720px) {
    .steps {
        grid-template-columns: 1fr;
        gap: var(--sp-4);
    }
}

/* ---- work: soft-shadow cards with washed variants ---- */
.work-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-3);
}

.work-card {
    background: var(--card);
    border-radius: var(--radius);
    padding: var(--sp-4);
    box-shadow: var(--card-shadow);
    transition: transform 0.2s ease, opacity 0.5s ease, box-shadow 0.3s, background-color 0.3s, color 0.3s;
}

.work-card:hover {
    transform: translateY(-3px);
}

.work-card.amber {
    background: linear-gradient(150deg, var(--card) 0%, transparent 45%), var(--amber-wash);
    background-color: var(--card);
}

.work-card.moss {
    background: linear-gradient(330deg, var(--card) 0%, transparent 45%), var(--moss-wash);
    background-color: var(--card);
}

.work-card .cat {
    font-size: var(--fs-sm);
    font-weight: 500;
    color: var(--accent);
}

.work-card h3 {
    font-family: var(--display), sans-serif;
    font-weight: 650;
    font-size: var(--fs-lg);
    line-height: 1.15;
    margin: 0.4rem 0 var(--sp-2);
}

.work-card p {
    color: var(--muted);
    font-size: var(--fs-sm);
    max-width: 52ch;
}

.work-card .tags {
    margin-top: var(--sp-2);
    font-size: var(--fs-xs);
    color: var(--muted);
}

@media (max-width: 720px) {
    .work-grid {
        grid-template-columns: 1fr;
    }
}

/* ---- featured project: forest panel, bookends the hero ---- */
.panel {
    position: relative;
    background:
        radial-gradient(40rem 24rem at 92% 8%, var(--forest-glow), transparent 62%),
        radial-gradient(36rem 22rem at 2% 96%, var(--forest-amber-glow), transparent 60%),
        linear-gradient(200deg, var(--forest-1) 0%, var(--forest-2) 100%);
    color: var(--forest-ink);
    border-radius: var(--radius);
    padding: var(--sp-8) clamp(1.5rem, 4vw, 3.5rem);
    overflow: hidden;
}

.panel::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: var(--grain);
    opacity: 0.07;
    pointer-events: none;
}

.panel > * {
    position: relative;
}

.panel-kicker {
    font-size: var(--fs-sm);
    font-weight: 500;
    color: var(--amber);
}

.panel h3 {
    font-family: var(--display), sans-serif;
    font-weight: 650;
    font-size: var(--fs-xl);
    line-height: 1.1;
    margin: var(--sp-2) 0 var(--sp-3);
}

.panel h3 em {
    font-style: normal;
    color: var(--amber);
}

.panel p {
    color: var(--forest-muted);
    max-width: 62ch;
}

.panel p + p {
    margin-top: var(--sp-2);
}

.panel .stack {
    margin-top: var(--sp-3);
    font-size: var(--fs-sm);
}

.panel .stack b {
    color: var(--forest-ink);
    font-weight: 600;
}

.panel .repo {
    display: inline-block;
    margin-top: var(--sp-4);
    color: var(--forest-ink);
    text-decoration-color: var(--amber);
    font-size: var(--fs-sm);
    font-weight: 500;
}

.panel .repo:hover {
    color: var(--amber);
}

/* ---- tech: grouped chunks with soft chips ---- */
.tech-groups {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-4) var(--sp-6);
}

.tech-group h3 {
    font-family: var(--display), sans-serif;
    font-size: var(--fs-base);
    font-weight: 600;
    margin-bottom: var(--sp-2);
}

.chips {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-1);
}

.chips li {
    display: inline-flex;
    align-items: center;
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: 0 2px 8px rgba(22, 36, 27, 0.07);
    padding: 0.35rem 0.8rem;
    font-size: var(--fs-sm);
    color: var(--muted);
}

@media (max-width: 900px) {
    .tech-groups {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 620px) {
    .tech-groups {
        grid-template-columns: 1fr;
        gap: var(--sp-3);
    }
}

/* ---- contact ---- */
.contact h2 {
    font-size: clamp(2rem, 5vw, 3.157rem);
    max-width: 18ch;
}

.contact p {
    color: var(--muted);
    max-width: 52ch;
    margin-top: var(--sp-3);
}

.contact .btn {
    margin-top: var(--sp-4);
}

.contact {
    padding-bottom: var(--sp-16);
}

/* ---- footer ---- */
footer {
    border-top: 1px solid var(--rule);
}

footer .wrap {
    display: flex;
    justify-content: space-between;
    gap: var(--sp-2);
    flex-wrap: wrap;
    padding-top: var(--sp-2);
    padding-bottom: var(--sp-3);
}

footer, footer a {
    font-size: var(--fs-sm);
    color: var(--muted);
}

footer a {
    text-decoration: none;
}

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