:root {
  --ui-font-scale: 1;
  --ui-font: "Aptos", "Segoe UI Variable", "Segoe UI", sans-serif;
  --ui-mono: "Cascadia Mono", "SFMono-Regular", Consolas, monospace;
  --control-height: 38px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 18px;
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.24);
  --accent-rgb: 107, 141, 255;
}

html[data-theme="midnight"] {
  color-scheme: dark;
  --bg: #07101d;
  --panel: #101a2b;
  --panel-alt: #162238;
  --border: #25384d;
  --text: #f4f7ff;
  --muted: #a6b6cc;
  --accent: #6b8dff;
  --accent-ink: #071126;
  --danger: #d94762;
  --warn: #f0c76c;
}

html[data-theme="graphite"] {
  color-scheme: dark;
  --bg: #111315;
  --panel: #1b1f22;
  --panel-alt: #24282c;
  --border: #394047;
  --text: #f5f6f8;
  --muted: #b0b8c0;
  --accent: #65d4ff;
  --accent-ink: #031119;
  --danger: #c73a52;
  --warn: #e8c46c;
}

html[data-theme="daylight"] {
  color-scheme: light;
  --bg: #eef3f8;
  --panel: #ffffff;
  --panel-alt: #f4f7fb;
  --border: #c5d0dd;
  --text: #132238;
  --muted: #5a6b7d;
  --accent: #3456d1;
  --accent-ink: #ffffff;
  --danger: #b42340;
  --warn: #8c5b00;
  --shadow: 0 18px 48px rgba(24, 43, 67, 0.14);
}

html[data-theme="contrast"] {
  color-scheme: dark;
  --bg: #000;
  --panel: #090909;
  --panel-alt: #111;
  --border: #9aa4b2;
  --text: #fff;
  --muted: #d5dbe3;
  --accent: #d6e2ff;
  --accent-ink: #000;
  --danger: #ff6f8b;
  --warn: #ffe08a;
  --shadow: 0 0 0 2px #fff;
}

html[data-accent="cobalt"] { --accent: #6b8dff; --accent-rgb: 107, 141, 255; --accent-ink: #071126; }
html[data-accent="teal"] { --accent: #51d8c8; --accent-rgb: 81, 216, 200; --accent-ink: #041c19; }
html[data-accent="amber"] { --accent: #efbe58; --accent-rgb: 239, 190, 88; --accent-ink: #231604; }
html[data-accent="rose"] { --accent: #f28ca7; --accent-rgb: 242, 140, 167; --accent-ink: #260913; }

html[data-density="compact"] {
  --control-height: 32px;
  --space-3: 10px;
  --space-4: 12px;
  --space-5: 18px;
}

html[data-density="spacious"] {
  --control-height: 44px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
}

html, body {
  max-width: 100%;
}

body {
  margin: 0;
  font-family: var(--ui-font);
  font-size: calc(14px * var(--ui-font-scale));
  line-height: 1.5;
  background: var(--bg);
  color: var(--text);
}

body[data-ui-page="login"],
body[data-ui-page="dashboard"] {
  min-height: 100vh;
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
input,
select,
textarea,
.status-pill,
.channel-card,
.panel {
  border-radius: var(--radius-sm);
}

button {
  min-height: var(--control-height);
  padding: 0 14px;
  border: 1px solid rgba(var(--accent-rgb), 0.45);
  background: rgba(var(--accent-rgb), 0.12);
  color: var(--text);
  cursor: pointer;
}

button.primary {
  background: var(--accent);
  color: var(--accent-ink);
}

button.secondary {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

input,
textarea {
  min-height: var(--control-height);
  padding: 9px 11px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel) 82%, transparent);
  color: var(--text);
}

textarea {
  line-height: 1.5;
}

label,
.field-label,
.metric-label {
  color: var(--muted);
  font-size: calc(12px * var(--ui-font-scale));
}

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

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
a:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--warn);
  outline-offset: 2px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 10px;
  border: 1px solid rgba(var(--accent-rgb), 0.35);
  background: rgba(var(--accent-rgb), 0.12);
  color: var(--text);
  font-size: calc(12px * var(--ui-font-scale));
  font-weight: 700;
}

.status-pill.subtle {
  background: var(--panel-alt);
  border-color: var(--border);
  color: var(--muted);
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--accent);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.lede {
  color: var(--muted);
  margin: 0;
}

.monospace {
  font-family: var(--ui-mono);
}

.channel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-3);
}

.channel-card {
  padding: 14px;
  border: 1px solid var(--border);
  background:
    radial-gradient(circle at 20% 0%, rgba(var(--accent-rgb), 0.12), transparent 38%),
    var(--panel-alt);
}

.channel-card-top {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
}

.channel-name {
  overflow-wrap: anywhere;
}

.channel-meta {
  margin: 10px 0 0;
  color: var(--muted);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

@media (max-width: 900px) {
  :root {
    --control-height: 44px;
  }

  button {
    min-height: 44px;
  }

  .channel-grid {
    grid-template-columns: 1fr;
  }
}