/* Corista design tokens and base component classes ("Classical"). Source of truth for colors, type, space,
   radius and shadow: design/DESIGN_SYSTEM.md. Fonts are linked from index.html. */

:root {
  --color-bg: #f3f2f2;
  --color-surface: #eae9e9;
  --color-text: #201f1d;
  --color-accent: #b68235;
  --color-accent-2: #ac803e;
  --color-divider: color-mix(in srgb, #201f1d 16%, transparent);

  /* Tonal ramps — generated in OKLCH on one shared lightness scale, so the
     same step of any role matches the others in visual value. */
  --color-neutral-100: #f8f4f4;
  --color-neutral-200: #eae7e7;
  --color-neutral-300: #d7d3d3;
  --color-neutral-400: #bab6b6;
  --color-neutral-500: #9b9797;
  --color-neutral-600: #7d7979;
  --color-neutral-700: #605d5d;
  --color-neutral-800: #444141;
  --color-neutral-900: #2d2b2b;

  --color-accent-100: #fff3e4;
  --color-accent-200: #ffe3bf;
  --color-accent-300: #facb8d;
  --color-accent-400: #e1ad66;
  --color-accent-500: #c28d41;
  --color-accent-600: #a06f24;
  --color-accent-700: #7d5411;
  --color-accent-800: #5a3b0a;
  --color-accent-900: #3a270d;

  --color-accent-2-100: #fff3e4;
  --color-accent-2-200: #ffe3be;
  --color-accent-2-300: #f5cd96;
  --color-accent-2-400: #dbaf70;
  --color-accent-2-500: #bc8f4e;
  --color-accent-2-600: #9b7232;
  --color-accent-2-700: #79561f;
  --color-accent-2-800: #573d14;
  --color-accent-2-900: #382810;

  --font-heading: "Cormorant Garamond", system-ui, sans-serif;
  --font-heading-weight: 600; /* review round 3: bold retired — semibold is the
     interface headings' ceiling (they need the weight at small sizes); display
     text goes lighter still, to the normal cut (see the deck) */
  --font-body: "Lora", system-ui, sans-serif;

  --space-1: 4.6px;
  --space-2: 9.2px;
  --space-3: 13.8px;
  --space-4: 18.4px;
  --space-6: 27.6px;
  --space-8: 36.8px;

  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 7px;

  /* Elevation — derived from the ground: soft ink-tinted shadows on a
     light theme, a hairline edge + ambient darkness on a dark one. */
  --shadow-sm: 0 1px 2px color-mix(in srgb, #2d2b2b 14%, transparent);
  --shadow-md: 0 3px 10px color-mix(in srgb, #2d2b2b 16%, transparent);
  --shadow-lg: 0 12px 32px color-mix(in srgb, #2d2b2b 22%, transparent);
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
}
h1, h2, h3, h4 { font-family: var(--font-heading); font-weight: var(--font-heading-weight); }

.plate{filter:sepia(0.22) saturate(0.82) contrast(1.05);box-sizing:border-box;
  border:6px solid var(--color-surface);outline:1px solid var(--color-divider)}

/* ══════════════════════════════════════════════════════════════════════════
   Components — built with the tokens above. Plain CSS
   on plain HTML: no JavaScript, no build step. Each class is documented in
   readme.md and demonstrated in foundations/ and components/.
   ══════════════════════════════════════════════════════════════════════ */

*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; font-size: 15px; line-height: 1.55; font-weight: 400; }
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  line-height: 1.12; letter-spacing: -0.015em; margin: 0 0 var(--space-2);
}
h1 { font-size: 42px; }
h2 { font-size: 32px; }
h3 { font-size: 25px; }
h4 { font-size: 20px; }
h5 { font-size: 16px; }
h6 { font-size: 13px; }
h6 { letter-spacing: 0.08em; text-transform: uppercase; }
p { margin: 0 0 var(--space-3); }
a { color: var(--color-accent); text-underline-offset: 3px; }
img { display: block; max-width: 100%; }
figure { margin: 0; }
figcaption {
  font-size: 11px; margin-top: var(--space-1);
  color: color-mix(in srgb, var(--color-text) 55%, transparent);
}
.text-muted { color: color-mix(in srgb, var(--color-text) 55%, transparent); }
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
::selection { background: color-mix(in srgb, var(--color-accent) 30%, transparent); }

/* — rules — */
.hr {
  height: 1px; border: 0; margin: var(--space-4) 0;
  background: var(--color-divider);
}

/* — buttons — */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  cursor: pointer; text-decoration: none;
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 14px; line-height: 1.2; color: var(--color-text); /* matches the .input's 14px —
     the pair sits side by side in sign-up rows */
  background: transparent; border: 1px solid transparent;
  padding: var(--space-2) calc(var(--space-3) * 1.2);
  border-radius: var(--radius-md);
}
.btn svg { display: block; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-primary { color: var(--color-accent); border-color: var(--color-accent); }
.btn-primary:hover { background: color-mix(in srgb, var(--color-accent) 12%, transparent); }
.btn-primary:active { background: color-mix(in srgb, var(--color-accent) 22%, transparent); }
.btn-secondary { border-color: var(--color-divider); }
.btn-secondary:hover { background: color-mix(in srgb, var(--color-text) 7%, transparent); }
.btn-secondary:active { background: color-mix(in srgb, var(--color-text) 14%, transparent); }
.btn-ghost { color: var(--color-accent); padding-inline: var(--space-1); }
.btn-ghost:hover { background: color-mix(in srgb, var(--color-accent) 10%, transparent); }
.btn-ghost:active { background: color-mix(in srgb, var(--color-accent) 18%, transparent); }
.btn-icon { width: 36px; height: 36px; padding: 0; }
.btn-block { width: 100%; margin-top: var(--space-2); }

/* — forms — */
.field > label {
  display: block; font-size: 12px; margin-bottom: 5px;
  color: color-mix(in srgb, var(--color-text) 70%, transparent);
}
.input {
  width: 100%; min-height: 36px; padding: 6px 10px; font: inherit;
  font-size: 14px; color: var(--color-text); caret-color: var(--color-accent);
  background: transparent;
  border: 1px solid var(--color-divider); border-radius: var(--radius-md);
}
.input:hover { border-color: color-mix(in srgb, var(--color-text) 45%, transparent); }
.input:focus-visible { border-color: var(--color-accent); outline-offset: 0; }
textarea.input { min-height: 90px; resize: vertical; }
.radio { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; font-size: 14px; }
.radio input, .seg-opt input {
  position: absolute; opacity: 0; width: 0; height: 0; pointer-events: none;
}
.radio .dot {
  width: 16px; height: 16px; flex: none; border-radius: 50%;
  border: 1.5px solid var(--color-divider);
}
.radio:hover .dot { border-color: var(--color-accent); }
.radio input:checked + .dot {
  border-color: var(--color-accent); background: var(--color-accent);
  box-shadow: inset 0 0 0 4px var(--color-bg);
}
.radio input:focus-visible + .dot { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.seg {
  display: inline-flex; overflow: hidden;
  border: 1px solid var(--color-divider); border-radius: var(--radius-md);
}
.seg-opt {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 12px; font-size: 13px; cursor: pointer;
}
.seg-opt + .seg-opt { border-left: 1px solid var(--color-divider); }
.seg-opt:has(input:checked) { color: var(--color-accent); box-shadow: inset 0 0 0 1px var(--color-accent); }
.seg-opt:not(:has(input:checked)):hover { background: color-mix(in srgb, var(--color-text) 7%, transparent); }
.seg-opt:has(input:focus-visible) { outline: 2px solid var(--color-accent); outline-offset: -2px; }

/* — cards — */
.card {
  display: flex; flex-direction: column; gap: var(--space-2);
  padding: var(--space-3); border-radius: var(--radius-md); background: transparent; border: 1px solid var(--color-divider);
}
.card-kicker { font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-accent); }
.card-title {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 17px; line-height: 1.2;
}
.card-body { margin: 0; font-size: 13px; opacity: 0.8; flex: 1; }
.card-meta {
  display: flex; align-items: center; gap: 6px; font-size: 11px;
  color: color-mix(in srgb, var(--color-text) 50%, transparent);
}
.elev-sm { box-shadow: var(--shadow-sm); }
.elev-md { box-shadow: var(--shadow-md); }
.elev-lg { box-shadow: var(--shadow-lg); }

/* — tags — */
.tag {
  display: inline-flex; align-items: center; font-size: 11px;
  letter-spacing: 0.02em; padding: 3px 10px;
  border-radius: calc(var(--radius-md) * 0.75);
}
.tag-accent { background: var(--color-accent-100); color: var(--color-accent-800); }
.tag-accent-2 { background: var(--color-accent-2-100); color: var(--color-accent-2-800); }
.tag-neutral { background: var(--color-neutral-100); color: var(--color-neutral-800); }
.tag-outline { border: 1px solid var(--color-accent); color: var(--color-accent); }

/* — navigation — */
.nav {
  display: flex; align-items: center; gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-divider);
}
.nav-brand {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 18px; margin-right: auto;
}
.nav a { color: inherit; text-decoration: none; font-size: 14px; }
.nav a:hover, .nav a[aria-current='page'] { color: var(--color-accent); }

/* — tables — */
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th {
  text-align: left; font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase;
  color: color-mix(in srgb, var(--color-text) 60%, transparent);
  padding: var(--space-2); border-bottom: 1px solid var(--color-divider);
}
.table td {
  padding: var(--space-2);
  border-bottom: 1px solid var(--color-divider);
}
.table tbody tr:hover { background: color-mix(in srgb, var(--color-text) 4%, transparent); }

/* — dialog — */
.dialog-backdrop {
  position: fixed; inset: 0; display: grid; place-items: center;
  padding: var(--space-4);
  background: color-mix(in srgb, var(--color-neutral-900) 50%, transparent);
}
.dialog {
  width: min(440px, 100%); display: flex; flex-direction: column; gap: var(--space-3);
  padding: var(--space-4); border-radius: var(--radius-lg);
  background: var(--color-surface); box-shadow: var(--shadow-lg); border: 1px solid var(--color-divider);
}
.dialog-title {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 20px;
}
.dialog-body { font-size: 14px; opacity: 0.85; }
.dialog-actions { display: flex; justify-content: flex-end; gap: var(--space-2); margin-top: var(--space-2); }


/* ── Corista additions ─────────────────────────────────────────── */
:root {
  --part-soprano: #9f4a4a; --part-alto: #4b6a99; --part-tenor: #4e8762; --part-bass: #7a5a8c;
  /* further parts, in order, at the same lightness */
  --part-x1: #85612b; --part-x2: #10777c; --part-x3: #8e5470; --part-x4: #637035;
  --part-x5: #646298; --part-x6: #91583e; --part-x7: #2a7290; --part-x8: #1e796b;
  --color-live: #b8322e;
  /* paper: the score's ground in both themes */
  --color-paper: #f3f2f2;
  /* named roles the dark theme retunes (see the end of this file) */
  --color-border-strong: var(--color-divider);
  --color-border-faint: var(--color-neutral-400);
  --color-accent-tint: var(--color-accent-100);
}
.tabular { font-variant-numeric: tabular-nums; }
.kicker { font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--color-accent); }
.label { font-size: 10px; letter-spacing: .12em; text-transform: uppercase; color: var(--color-neutral-600); margin-bottom: 8px; }
.display { font-family: var(--font-heading); font-weight: 400; line-height: 1.05; letter-spacing: -0.015em; }
.switch { width: 34px; height: 20px; border-radius: 10px; border: 1px solid var(--color-neutral-400); position: relative; background: transparent; cursor: pointer; }
.switch::after { content: ""; position: absolute; top: 3px; left: 3px; width: 12px; height: 12px; border-radius: 50%; background: var(--color-neutral-400); transition: left .15s ease, background .15s ease; }
.switch[aria-checked="true"] { border-color: var(--color-accent); background: var(--color-accent-100); }
.switch[aria-checked="true"]::after { left: 17px; background: var(--color-accent); }
.slider { -webkit-appearance: none; appearance: none; width: 100%; height: 20px; background: transparent; }
.slider::-webkit-slider-runnable-track { height: 1px; background: var(--color-divider); }
.slider::-webkit-slider-thumb { -webkit-appearance: none; width: 12px; height: 12px; margin-top: -5.5px; border-radius: 50%; border: 1px solid var(--color-accent); background: var(--color-bg); }
.popover { background: var(--color-bg); border: 1px solid var(--color-divider); border-radius: 6px; box-shadow: var(--shadow-lg); padding: 8px 0; }
.popover-row { display: flex; align-items: center; justify-content: space-between; padding: 10px 16px; font-size: 14px; }
.band { display: flex; align-items: center; gap: 22px; padding: 12px 18px; border-top: 1px solid var(--color-accent); border-bottom: 1px solid var(--color-divider); background: var(--color-accent-100); }
.live-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--color-live); animation: livepulse 1.6s ease-in-out infinite; }
@keyframes livepulse { 0%,100% { opacity: 1 } 50% { opacity: .35 } }
.row-list > * { padding: 18px 0; border-bottom: 1px solid var(--color-divider); }
.row-list > *:hover { background: color-mix(in srgb, var(--color-text) 3%, transparent); }
.tabs { display: flex; border-bottom: 1px solid var(--color-divider); }
.tab { padding: 10px 0 12px; margin-right: 28px; margin-bottom: -1px; font-size: 15px; color: var(--color-neutral-600); border-bottom: 1px solid transparent; }
.tab[aria-selected="true"] { color: var(--color-text); border-bottom-color: var(--color-accent); }

/* ── Dark mode ─────────────────────────────────────────────────────
   <html data-theme="dark"> (set before first paint by theme.js, from the Appearance setting or
   prefers-color-scheme). Ground is a warm near-black, type is paper, the accent lifts one ramp step so
   gold strokes read on ink. Hairlines are paper at 14%, tinted fills accent at 12%. Rules: DARK_MODE.md
   in the design handoff, summarized in design/DESIGN_SYSTEM.md §6b. */
[data-theme="dark"] {
  color-scheme: dark;
  --color-bg: #1d1b19;
  --color-surface: #2a2724;
  --color-text: #efe9df;
  --color-accent: #e1ad66;
  --color-accent-2: #e1ad66;
  --color-divider: rgba(239, 233, 223, .14);
  --color-border-strong: rgba(239, 233, 223, .20);   /* control borders */
  --color-border-faint: rgba(239, 233, 223, .30);    /* a play button the singer can't use; the grabber */
  --color-accent-tint: rgba(225, 173, 102, .12);

  /* neutral ramp inverted: 600/700 are secondary text, 500 disabled, 400 switch-off */
  --color-neutral-100: #2d2b2b; --color-neutral-200: #3a3735; --color-neutral-300: #4a4642;
  --color-neutral-400: #6b665f; --color-neutral-500: #8a847a; --color-neutral-600: #a39c92;
  --color-neutral-700: #a39c92; --color-neutral-800: #c9c3ba; --color-neutral-900: #efe9df;

  /* accent ramp: 100 is the tint fill; 700/800 are small accent text (chips, avatar initial) */
  --color-accent-100: rgba(225, 173, 102, .12); --color-accent-200: rgba(225, 173, 102, .22);
  --color-accent-300: rgba(225, 173, 102, .40); --color-accent-400: #c28d41;
  --color-accent-500: #e1ad66; --color-accent-600: #f0cf9a;
  --color-accent-700: #f0cf9a; --color-accent-800: #f0cf9a; --color-accent-900: #fff3e4;

  /* part colors lift to the same lightness on the dark ground */
  --part-soprano: #d27b7b; --part-alto: #7d9ccd; --part-tenor: #7fb994; --part-bass: #ad8cc0;
  --part-x1: #bd9660; --part-x2: #55aeb2; --part-x3: #c688a5; --part-x4: #97a669;
  --part-x5: #9897d0; --part-x6: #ca8d71; --part-x7: #62a8c8; --part-x8: #5cafa0;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .5);
  --shadow-md: 0 3px 10px rgba(0, 0, 0, .55);
  --shadow-lg: 0 -12px 32px rgba(0, 0, 0, .5), 0 12px 32px rgba(0, 0, 0, .5);
}
[data-theme="dark"] .band { background: var(--color-accent-tint); }
/* The engraving is never inverted: it sits on a paper plate matted on the dark ground, and everything drawn
   on it (ink, grey-out, playhead, part highlights) takes the light values. */
[data-theme="dark"] .score-plate {
  --color-bg: var(--color-paper); --color-surface: #eae9e9; --color-text: #201f1d; --color-accent: #b68235;
  --color-divider: color-mix(in srgb, #201f1d 16%, transparent);
  --part-soprano: #9f4a4a; --part-alto: #4b6a99; --part-tenor: #4e8762; --part-bass: #7a5a8c;
  --part-x1: #85612b; --part-x2: #10777c; --part-x3: #8e5470; --part-x4: #637035;
  --part-x5: #646298; --part-x6: #91583e; --part-x7: #2a7290; --part-x8: #1e796b;
  color-scheme: light; color: var(--color-text);
  background: var(--color-bg); border: 6px solid #2a2724; outline: 1px solid rgba(239, 233, 223, .14); padding-top: 16px;
}