/* ----------------------------------------------------------------------------
   Disco — marketing site styles
   ----------------------------------------------------------------------------
   One stylesheet, shared across landing / invite / releases / legal pages.
   Design goals:
     • Mirrors the iOS app's dark-first palette so the site feels like an
       extension of the app, not a separate brand.
     • Fluid typography — no media-query breakpoints for font size; uses
       clamp() so everything scales smoothly from phone to desktop.
     • Zero JS dependencies. The one place we use JS (/u/) is a tiny inline
       snippet that does not rely on this file.
   ---------------------------------------------------------------------------- */

:root {
    /* Palette. Accent mirrors the app's default accent (warm amber). */
    --bg:            #0B0B0E;
    --bg-elev:       #141418;
    --bg-elev-2:     #1C1C22;
    --ink:           #F4F1EC;
    --ink-dim:       #B6B3AE;
    --ink-faint:     #6E6B66;
    --accent:        #E8A94B;
    --accent-soft:   #E8A94B22;
    --accent-ink:    #0B0B0E;
    --danger:        #E2574C;
    --hairline:      #2A2A30;

    --radius-sm:     8px;
    --radius-md:     14px;
    --radius-lg:     22px;
    --radius-pill:   999px;

    --shadow-lg:     0 30px 80px rgba(0,0,0,0.45);

    --maxw-text:     640px;
    --maxw-wide:     1120px;

    /* Font stack — system first, no webfont round-trip. */
    --font-body:     -apple-system, BlinkMacSystemFont, "SF Pro Text",
                     "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-display:  -apple-system, BlinkMacSystemFont, "SF Pro Display",
                     "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono:     ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

/* Reset / baseline */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: var(--font-body);
    font-size: clamp(16px, 1.05vw + 0.6rem, 18px);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    min-height: 100vh;
    display: flex; flex-direction: column;
}
main { flex: 1; }

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

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

h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin: 0 0 0.5em;
}
h1 { font-size: clamp(2.2rem, 4.5vw + 1rem, 4.4rem); letter-spacing: -0.035em; }
h2 { font-size: clamp(1.6rem, 2vw + 1rem, 2.4rem); }
h3 { font-size: clamp(1.15rem, 0.5vw + 1rem, 1.4rem); }

p  { margin: 0 0 1em; }
p.lead { font-size: clamp(1.05rem, 0.4vw + 1rem, 1.25rem); color: var(--ink-dim); }

code, pre { font-family: var(--font-mono); font-size: 0.95em; }
pre { background: var(--bg-elev); padding: 1rem 1.1rem; border-radius: var(--radius-md); overflow-x: auto; border: 1px solid var(--hairline); }

/* Layout wrappers */
.wrap        { max-width: var(--maxw-wide); margin: 0 auto; padding: 0 clamp(1rem, 3vw, 2rem); }
.wrap-text   { max-width: var(--maxw-text); margin: 0 auto; padding: 0 clamp(1rem, 3vw, 2rem); }
section      { padding: clamp(3rem, 7vw, 6rem) 0; }

/* Navigation */
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 0;
    gap: 1rem;
}
.nav .brand {
    display: inline-flex; align-items: center; gap: 0.6rem;
    font-weight: 700; font-size: 1.05rem; letter-spacing: -0.01em;
    color: var(--ink); text-decoration: none;
}
.nav .brand .mark {
    width: 28px; height: 28px; border-radius: 50%;
    background:
        radial-gradient(circle at 50% 50%, var(--bg-elev-2) 0 22%, transparent 23%),
        conic-gradient(from 180deg, #E8A94B, #C97C2F, #E8A94B);
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.05);
}
.nav nav a {
    color: var(--ink-dim);
    margin-left: 1.5rem;
    font-size: 0.95rem;
    text-decoration: none;
}
.nav nav a:hover { color: var(--ink); }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    gap: 0.55rem;
    padding: 0.85rem 1.35rem;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    border: 1px solid transparent;
    transition: transform 120ms ease, background-color 120ms ease, border-color 120ms ease;
    cursor: pointer;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary {
    background: var(--accent);
    color: var(--accent-ink);
}
.btn-primary:hover { background: #F0B863; }
.btn-ghost {
    color: var(--ink);
    border-color: var(--hairline);
    background: transparent;
}
.btn-ghost:hover { border-color: var(--ink-faint); }

/* Hero */
.hero {
    position: relative;
    padding-top: clamp(2.5rem, 6vw, 5rem);
    padding-bottom: clamp(3rem, 8vw, 7rem);
    overflow: hidden;
}
.hero::before {
    content: "";
    position: absolute;
    top: -30%;
    left: 50%;
    width: 120vmin;
    height: 120vmin;
    max-width: 1400px; max-height: 1400px;
    transform: translateX(-50%);
    background:
        radial-gradient(closest-side, var(--accent-soft), transparent 70%);
    pointer-events: none;
    z-index: 0;
}
.hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: clamp(2rem, 5vw, 5rem);
    align-items: center;
}
@media (max-width: 780px) {
    .hero-grid { grid-template-columns: 1fr; text-align: center; }
    .hero-cta { justify-content: center; }
}
.hero h1 span.accent { color: var(--accent); }
.hero .kicker {
    display: inline-block;
    font-size: 0.85rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    background: var(--accent-soft);
    padding: 0.4rem 0.85rem;
    border-radius: var(--radius-pill);
    margin-bottom: 1.1rem;
    font-weight: 600;
}
.hero-cta {
    display: flex; flex-wrap: wrap; gap: 0.9rem;
    margin-top: 1.75rem;
}

/* App Store badge — SVG inlined directly into HTML. Sized here. */
.appstore-badge {
    height: 52px;
    display: inline-block;
}
.appstore-badge img, .appstore-badge svg { height: 100%; width: auto; display: block; }

/* Phone mockup — pure CSS, no external image required. */
.phone {
    position: relative;
    width: min(320px, 80vw);
    aspect-ratio: 9 / 19.5;
    margin: 0 auto;
    background: linear-gradient(180deg, #1A1A1F, #0E0E12);
    border-radius: 46px;
    border: 1px solid #2C2C33;
    box-shadow: var(--shadow-lg), inset 0 0 0 6px #0B0B0E;
    padding: 14px;
    overflow: hidden;
}
.phone-screen {
    width: 100%; height: 100%;
    border-radius: 36px;
    background: linear-gradient(180deg, #141418, #0B0B0E 60%);
    position: relative;
    overflow: hidden;
    display: flex; flex-direction: column;
}
.phone-notch {
    position: absolute;
    top: 10px; left: 50%;
    transform: translateX(-50%);
    width: 110px; height: 28px;
    background: #0B0B0E;
    border-radius: 999px;
    z-index: 2;
}
.phone-content {
    flex: 1;
    padding: 48px 16px 16px;
    display: flex; flex-direction: column; gap: 10px;
    overflow: hidden;
}
.sample-card {
    background: var(--bg-elev);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-md);
    padding: 10px 12px;
    display: flex; gap: 10px; align-items: center;
}
.sample-card .art {
    width: 44px; height: 44px; border-radius: 6px; flex-shrink: 0;
    background: linear-gradient(135deg, #E8A94B, #C97C2F);
}
.sample-card .art.v2 { background: linear-gradient(135deg, #5B8CFF, #324FB5); }
.sample-card .art.v3 { background: linear-gradient(135deg, #E75A72, #8E2A46); }
.sample-card .art.v4 { background: linear-gradient(135deg, #4CAF8A, #1F6B52); }
.sample-card .meta { flex: 1; min-width: 0; font-size: 11px; }
.sample-card .meta .t { color: var(--ink); font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sample-card .meta .s { color: var(--ink-dim); font-size: 10px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sample-card .stars {
    color: var(--accent);
    font-size: 10px;
    letter-spacing: 1px;
}

/* Feature grid */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.25rem;
}
.feature {
    background: var(--bg-elev);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
}
.feature .icon {
    width: 44px; height: 44px;
    border-radius: 12px;
    background: var(--accent-soft);
    color: var(--accent);
    display: inline-flex; align-items: center; justify-content: center;
    margin-bottom: 1rem;
    font-size: 1.25rem;
}
.feature h3 { margin-bottom: 0.35rem; }
.feature p  { margin: 0; color: var(--ink-dim); font-size: 0.98rem; }

/* Section divider title */
.section-title {
    text-align: center;
    margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}
.section-title p { color: var(--ink-dim); max-width: 52ch; margin: 0 auto; }

/* Footer */
footer {
    border-top: 1px solid var(--hairline);
    padding: 2rem 0 2.5rem;
    font-size: 0.9rem;
    color: var(--ink-dim);
}
footer .row {
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 1rem;
}
footer nav a {
    color: var(--ink-dim);
    margin-left: 1.25rem;
    text-decoration: none;
}
footer nav a:first-child { margin-left: 0; }
footer nav a:hover { color: var(--ink); }

/* Content pages (privacy / terms / releases) */
article.doc {
    padding: clamp(2.5rem, 5vw, 4rem) 0;
}
article.doc h1 { margin-top: 0; }
article.doc h2 { margin-top: 2.25em; }
article.doc ul, article.doc ol { padding-left: 1.3rem; }
article.doc li { margin: 0.35em 0; }
article.doc .meta-line {
    color: var(--ink-faint);
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

/* Release notes */
.release {
    border-top: 1px solid var(--hairline);
    padding: 2rem 0;
}
.release:first-of-type { border-top: none; padding-top: 0; }
.release .version-row {
    display: flex; align-items: baseline; gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 0.5rem;
}
.release h2 { margin: 0; font-size: 1.5rem; }
.release .date { color: var(--ink-faint); font-size: 0.9rem; }
.release .tag {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
    background: var(--accent-soft);
    padding: 0.25rem 0.55rem;
    border-radius: var(--radius-pill);
    font-weight: 600;
}

/* Invite page */
.invite-card {
    max-width: 440px;
    margin: 0 auto;
    background: var(--bg-elev);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    padding: clamp(1.75rem, 4vw, 2.75rem);
    text-align: center;
    box-shadow: var(--shadow-lg);
}
.invite-card .code {
    font-family: var(--font-mono);
    font-size: 1.35rem;
    color: var(--accent);
    background: var(--accent-soft);
    padding: 0.5rem 0.9rem;
    border-radius: var(--radius-sm);
    display: inline-block;
    margin: 0.5rem 0 1rem;
    letter-spacing: 0.1em;
}
.invite-card .btn { width: 100%; margin-top: 0.5rem; }
.invite-hint {
    color: var(--ink-faint);
    font-size: 0.85rem;
    margin-top: 1.25rem;
}

/* Accessibility */
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* Prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; }
}