/* ============================================================
   ABEANT — Design Tokens
   System: "The Drafting Table"
   Derived from the Payload palette (warm plaster / carbon ink)
   Fonts: Necto Mono (annotation) + Ortica Linear (voice)
   ============================================================ */

@font-face {
    font-family: 'Ortica Linear';
    src: url('../assets/fonts/OrticaLinear-Regular.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Ortica Linear';
    src: url('../assets/fonts/OrticaLinear-Light.woff2') format('woff2');
    font-weight: 300;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Necto Mono';
    src: url('../assets/fonts/NectoMono-Regular.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

:root {
    /* ---- Typefaces ---- */
    --font-mono: 'Necto Mono', ui-monospace, 'SF Mono', monospace;
    --font-display: 'Ortica Linear', Georgia, serif;

    /* ---- Type scale ---- */
    --text-caption: 0.625rem;    /* 10px — figure annotations */
    --text-label: 0.6875rem;     /* 11px — mono labels */
    --text-body-s: 0.8125rem;    /* 13px — mono body */
    --text-body: 1rem;           /* 16px — display body */
    --text-lead: clamp(1.125rem, 1.4vw, 1.375rem);
    --text-title: clamp(1.75rem, 3vw, 2.5rem);
    --text-display: clamp(2.75rem, 6vw, 5rem);
    --text-hero: clamp(3.25rem, 9vw, 7.5rem);

    --tracking-label: 0.16em;
    --tracking-wide: 0.24em;

    /* ---- Spacing (8px base) ---- */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 1rem;
    --space-4: 1.5rem;
    --space-5: 2.5rem;
    --space-6: 4rem;
    --space-7: 6.5rem;

    /* ---- Fixed chrome ---- */
    --chrome-top: clamp(4.25rem, 6.6vw, 5.5rem);
    --brand-logo-height: calc(var(--chrome-top) - 1rem);

    /* ---- Lines ---- */
    --hairline: 1px;
    --radius-s: 4px;
    --radius-m: 8px;
    --radius-icon: 22.37%; /* squircle-ish ratio for app icons */

    /* ---- Motion ---- */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --dur-fast: 160ms;
    --dur-base: 320ms;
    --dur-slow: 640ms;

    /* ---- Theme: Plaster (light) ---- */
    /* Signal = ABEANT orange, deepened on plaster for WCAG contrast */
    --signal: #C24E00;
    --signal-ink: #FFFFFF;
    --bg: #EDEBE9;              /* warm plaster */
    --bg-raised: #FCFBFA;       /* bleached paper */
    --bg-recessed: #E6E2DE;     /* darker almond */
    --ink: #1C1A19;             /* soft carbon */
    --ink-2: #666460;           /* secondary */
    --ink-3: #6F6A64;           /* tertiary — AA on plaster */
    --line: #D6D3D0;            /* drafting pencil */
    --line-strong: #1A1A1A;     /* inked line */
    --grid-line: rgba(28, 26, 25, 0.07);
    --grid-line-strong: rgba(28, 26, 25, 0.13);
    --grain-opacity: 0.09;
    --vignette: rgba(28, 26, 25, 0.12);
    --shadow-soft: 0 4px 24px rgba(28, 26, 25, 0.08);
}

/* tablet & phone: the wordmark holds its weight */
@media (max-width: 1023px) {
    :root {
        --chrome-top: 4.75rem;
    }
}

[data-theme="dark"] {
    /* ---- Theme: Charcoal (dark) ---- */
    /* Full-strength orange on charcoal; dark ink on signal surfaces */
    --signal: #FF6600;
    --signal-ink: #1C1A19;
    --bg: #0C0C0C;              /* warm charcoal */
    --bg-raised: #141414;
    --bg-recessed: #1F1F1F;
    --ink: #F0EBE6;             /* warm paper-white */
    --ink-2: #B3B3B3;
    --ink-3: #8A8580;           /* tertiary — AA on charcoal */
    --line: #2A2A2A;
    --line-strong: #E8DCC6;     /* drafting beige */
    --grid-line: rgba(240, 235, 230, 0.05);
    --grid-line-strong: rgba(240, 235, 230, 0.105);
    --grain-opacity: 0.13;
    --vignette: rgba(0, 0, 0, 0.45);
    --shadow-soft: 0 4px 24px rgba(0, 0, 0, 0.5);
}

/* ============================================================
   Base
   ============================================================ */

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

html,
body {
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg);
    color: var(--ink);
    font-family: var(--font-mono);
    font-size: var(--text-body-s);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    transition: background-color var(--dur-base) var(--ease-out),
        color var(--dur-base) var(--ease-out);
}

::selection {
    background: var(--signal);
    color: var(--signal-ink);
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font: inherit;
    color: inherit;
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
}

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

/* ---- Cutting-mat surface: major/minor grid + diagonal guides + grain ---- */
.sheet {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
    /* worn-in vignette */
    background: radial-gradient(ellipse 90% 85% at 50% 45%,
            transparent 55%,
            var(--vignette) 130%);
}

.sheet::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        /* major grid */
        linear-gradient(var(--grid-line-strong) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line-strong) 1px, transparent 1px),
        /* minor grid */
        linear-gradient(var(--grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line) 1px, transparent 1px),
        /* 45° alignment guides */
        repeating-linear-gradient(45deg, var(--grid-line) 0, var(--grid-line) 1px, transparent 1px, transparent 300px),
        repeating-linear-gradient(-45deg, var(--grid-line) 0, var(--grid-line) 1px, transparent 1px, transparent 300px);
    background-size:
        150px 150px,
        150px 150px,
        30px 30px,
        30px 30px,
        auto,
        auto;
}

.sheet::after {
    /* living film grain — oversized so the jitter never shows edges */
    content: '';
    position: absolute;
    inset: -120px;
    background-image: url('data:image/svg+xml;utf8,<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg"><filter id="n"><feTurbulence type="fractalNoise" baseFrequency="1.1" numOctaves="3" stitchTiles="stitch"/></filter><rect width="100%" height="100%" filter="url(%23n)" opacity="0.5"/></svg>');
    background-size: 220px 220px;
    opacity: var(--grain-opacity);
    mix-blend-mode: overlay;
    animation: grain-jitter 1.4s steps(7) infinite;
}

@keyframes grain-jitter {
    0% { transform: translate(0, 0); }
    14% { transform: translate(-38px, 22px); }
    28% { transform: translate(24px, -41px); }
    42% { transform: translate(-19px, -33px); }
    57% { transform: translate(41px, 14px); }
    71% { transform: translate(-30px, 39px); }
    85% { transform: translate(16px, -24px); }
    100% { transform: translate(0, 0); }
}

/* ============================================================
   Shared primitives
   ============================================================ */

/* Mono annotation label — [ 01 ] WORK etc. */
.label {
    font-family: var(--font-mono);
    font-size: var(--text-label);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
    color: var(--ink-2);
}

.label--strong {
    color: var(--ink);
}

.label--signal {
    color: var(--signal);
}

/* Display voice */
.display {
    font-family: var(--font-display);
    font-weight: 300;
    letter-spacing: -0.015em;
    line-height: 1.05;
    color: var(--ink);
}

/* Hairline rule with optional mono caption */
.rule {
    border: none;
    border-top: var(--hairline) solid var(--line);
    margin: 0;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-mono);
    font-size: var(--text-label);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
    padding: 0.875rem 1.5rem;
    border: var(--hairline) solid var(--line-strong);
    border-radius: 999px;
    color: var(--ink);
    transition: background-color var(--dur-fast) var(--ease-out),
        color var(--dur-fast) var(--ease-out),
        border-color var(--dur-fast) var(--ease-out),
        transform var(--dur-fast) var(--ease-out);
}

.btn:hover {
    background: var(--ink);
    color: var(--bg);
    border-color: var(--ink);
}

.btn--signal {
    background: var(--signal);
    border-color: var(--signal);
    color: var(--signal-ink);
}

.btn--signal:hover {
    background: var(--ink);
    border-color: var(--ink);
    color: var(--bg);
}

.btn .icon {
    width: 0.875rem;
    height: 0.875rem;
}

/* Carbon icons inherit currentColor */
.icon {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    fill: currentColor;
    flex: none;
}

/* ============================================================
   Top bar + colophon (shared chrome)
   ============================================================ */

.topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    min-height: var(--chrome-top);
    padding: 0.5rem var(--space-4);
    border-bottom: var(--hairline) solid var(--line);
    background: color-mix(in srgb, var(--bg) 82%, transparent);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
}

/* The logo IS the wordmark — no companion text */
.topbar__brand {
    display: flex;
    align-items: center;
}

.topbar__brand img {
    height: var(--brand-logo-height);
    max-width: min(42vw, 13rem);
    width: auto;
    object-fit: contain;
    display: block;
}

.topbar__controls {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-mono);
    font-size: var(--text-caption);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
    color: var(--ink-2);
    border: var(--hairline) solid var(--line);
    border-radius: 999px;
    padding: 0.45rem 0.9rem;
    transition: color var(--dur-fast) var(--ease-out),
        border-color var(--dur-fast) var(--ease-out),
        background-color var(--dur-fast) var(--ease-out);
}

.chip:hover,
.chip[aria-pressed="true"] {
    color: var(--ink);
    border-color: var(--ink);
}

.chip[aria-pressed="true"] {
    background: var(--bg-recessed);
}

.chip .icon {
    width: 0.75rem;
    height: 0.75rem;
}

.colophon {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-4);
    border-top: var(--hairline) solid var(--line);
    background: color-mix(in srgb, var(--bg) 82%, transparent);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    font-size: var(--text-caption);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
    color: var(--ink-3);
}

.colophon a:hover {
    color: var(--signal);
}

@media (max-width: 540px) {
    .topbar {
        gap: var(--space-2);
        padding-inline: var(--space-3);
    }

    .topbar__controls {
        gap: var(--space-1);
    }

    .topbar__controls .chip span {
        display: none;
    }

    .topbar__controls .chip {
        padding: 0.55rem;
    }

    .colophon {
        padding-inline: var(--space-3);
    }
}

/* Screen-reader-only text */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

/* ============================================================
   Reduced motion
   ============================================================ */

@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}