/* ============================================================
   ASR Landing — base.css
   Design tokens (mirrored from the dashboard), reset, typography,
   shared utilities and components.
   ============================================================ */

:root {
    /* Surfaces */
    --base: #0e1116;
    --surface: #151a21;
    --raised: #1b222c;
    --border: #232b36;

    /* Text */
    --text: #f4f6f8;
    --text-2: #9aa4b2;
    --text-3: #5c6675;

    /* Accents */
    --gold: #c9a24b;
    --gold-soft: rgba(201, 162, 75, 0.14);
    --blue: #38bdf8;
    --teal: #2dd4bf;
    --grad: linear-gradient(135deg, #38bdf8, #2dd4bf);

    /* Status */
    --success: #34d399;
    --warning: #fbbf24;
    --danger: #f87171;
    --info: #60a5fa;

    /* Fonts */
    --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
    --font-ui: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
    --font-ar: "IBM Plex Sans Arabic", "Inter", system-ui, sans-serif;
    --font-zh: "Noto Sans SC", "Inter", system-ui, sans-serif;

    /* Shape & motion */
    --r-card: 14px;
    --r-btn: 10px;
    --r-pill: 999px;
    --t-fast: 180ms;
    --t-med: 260ms;
    --t-slow: 750ms;
    --ease: cubic-bezier(0.22, 0.61, 0.36, 1);

    --container: 1200px;
}

/* ---------- Reset ---------- */

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

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

body {
    background: var(--base);
    color: var(--text);
    font-family: var(--font-ui);
    font-size: 15px;
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

html[lang="ar"] body,
html[lang="ar"] button,
html[lang="ar"] input,
html[lang="ar"] select,
html[lang="ar"] textarea {
    font-family: var(--font-ar);
}

html[lang="zh"] body,
html[lang="zh"] button,
html[lang="zh"] input,
html[lang="zh"] select,
html[lang="zh"] textarea {
    font-family: var(--font-zh);
}

h1,
h2,
h3,
h4 {
    font-family: var(--font-display);
    font-weight: 600;
    letter-spacing: -0.01em;
}

html[lang="ar"] h1,
html[lang="ar"] h2,
html[lang="ar"] h3,
html[lang="ar"] h4 {
    font-family: var(--font-ar);
}

html[lang="zh"] h1,
html[lang="zh"] h2,
html[lang="zh"] h3,
html[lang="zh"] h4 {
    font-family: var(--font-zh);
}

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

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

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

ul,
ol {
    list-style: none;
}

::selection {
    background: rgba(201, 162, 75, 0.35);
    color: var(--text);
}

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

/* ---------- Layout utilities ---------- */

.container {
    width: min(100% - 40px, var(--container));
    margin-inline: auto;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

.skip-link {
    position: fixed;
    inset-block-start: -56px;
    inset-inline-start: 16px;
    z-index: 200;
    background: var(--gold);
    color: #191509;
    font-weight: 600;
    padding: 10px 18px;
    border-radius: 0 0 var(--r-btn) var(--r-btn);
    transition: inset-block-start var(--t-fast) var(--ease);
}

.skip-link:focus {
    inset-block-start: 0;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    border-radius: var(--r-btn);
    border: 1px solid transparent;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.01em;
    cursor: pointer;
    transition: transform var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}

.btn--lg {
    padding: 14px 26px;
    font-size: 15px;
}

.btn--primary {
    background: var(--gold);
    color: #191509;
}

.btn--primary:hover {
    background: #d8b25e;
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(201, 162, 75, 0.22);
}

.btn--primary:active {
    transform: translateY(0);
}

.btn--primary:disabled {
    opacity: 0.55;
    cursor: wait;
    transform: none;
    box-shadow: none;
}

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

.btn--ghost:hover {
    border-color: rgba(201, 162, 75, 0.55);
    background: var(--raised);
    transform: translateY(-1px);
}

/* ---------- Chips ---------- */

.chip {
    display: inline-flex;
    align-items: center;
    padding: 4px 11px;
    border-radius: var(--r-pill);
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-2);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.chip--gold {
    color: var(--gold);
    border-color: rgba(201, 162, 75, 0.4);
    background: var(--gold-soft);
}

.chip--info {
    color: var(--info);
    border-color: rgba(96, 165, 250, 0.35);
    background: rgba(96, 165, 250, 0.07);
}

.chip--teal {
    color: var(--teal);
    border-color: rgba(45, 212, 191, 0.35);
    background: rgba(45, 212, 191, 0.07);
}

/* ---------- Section scaffolding ---------- */

.section {
    position: relative;
    padding-block: clamp(72px, 9vw, 116px);
}

.section__head {
    max-width: 640px;
    margin-bottom: clamp(36px, 5vw, 56px);
}

.section__title {
    font-size: clamp(30px, 4vw, 44px);
    line-height: 1.12;
    margin-top: 14px;
}

.eyebrow {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-3);
}

.eyebrow::before {
    content: "";
    width: 28px;
    height: 1px;
    background: var(--gold);
    flex: none;
}

.eyebrow__num {
    color: var(--gold);
    font-family: var(--font-display);
    letter-spacing: 0.06em;
}

/* ---------- Skeleton loaders ---------- */

.skeleton {
    border-radius: 8px;
    background: linear-gradient(100deg, var(--raised) 35%, #242e3a 45%, var(--raised) 55%);
    background-size: 220% 100%;
    animation: shimmer 1.6s linear infinite;
}