/* Palette values switch with server configuration; utilities resolve them at use time. */
@custom-variant white (&:where([data-theme="white"], [data-theme="white"] *));
@custom-variant dark (&:where([data-theme="dark"], [data-theme="dark"] *));
@custom-variant compact (@media (max-width: 600px));
@custom-variant short (@media (max-height: 640px));

@theme inline {
  --color-surface: var(--bg);
  --color-surface-raised: var(--bg-elev);
  --color-surface-overlay: var(--bg-elev-2);
  --color-foreground: var(--text);
  --color-muted: var(--text-dim);
  --color-faint: var(--text-faint);
  --color-line: var(--border);
  --color-line-strong: var(--border-strong);
  --color-brand: var(--brand);
  --color-brand-secondary: var(--brand-2);
  --color-brand-tertiary: var(--brand-3);
  --color-accent: var(--accent);
  --color-accent-secondary: var(--accent-2);
  --color-listening: var(--listening);
  --color-speaking: var(--speaking);
  --color-processing: var(--processing);
  --color-error: var(--error);
  --color-success: var(--success);
  --color-voice-user: var(--voice-user);
  --color-voice-assistant: var(--voice-assistant);
  --color-voice-tool: var(--voice-tool);
  --radius-control: var(--app-radius-control);
  --radius-panel: var(--app-radius-panel);
  --radius-card: var(--app-radius-card);
  --shadow-panel: var(--shadow-soft);
  --shadow-brand: var(--shadow-glow-brand);
  --shadow-card-glass: var(--shadow-glass);
}

@theme {
  --font-sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "Geist Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
}

@layer base {
  :root {
    --bg: #07080d;
    --bg-elev: rgba(22, 25, 37, 0.55);
    --bg-elev-2: rgba(31, 35, 52, 0.55);
    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.16);
    --glass: rgba(18, 20, 30, 0.45);
    --glass-strong: rgba(18, 20, 30, 0.62);
    --text: #f5f6fa;
    --text-dim: rgba(245, 246, 250, 0.7);
    --text-faint: rgba(245, 246, 250, 0.48);

    --brand: #8b5cf6;
    --brand-2: #ec4899;
    --brand-3: #22d3ee;
    --accent: #a78bfa;
    --accent-2: #22d3ee;
    --listening: #22d3ee;
    --speaking: #a78bfa;
    --processing: #fbbf24;
    --error: #ff6a75;
    --success: #34d399;

    --brand-gradient: linear-gradient(135deg, #8b5cf6 0%, #ec4899 50%, #22d3ee 100%);
    --brand-soft-gradient: linear-gradient(
      135deg,
      color-mix(in srgb, #8b5cf6 55%, transparent),
      color-mix(in srgb, #ec4899 48%, transparent) 55%,
      color-mix(in srgb, #22d3ee 55%, transparent)
    );
    --voice-user: var(--accent-2);
    --voice-assistant: var(--accent);
    --voice-tool: var(--processing);

    --app-radius-control: 10px;
    --app-radius-panel: 16px;
    --app-radius-card: 26px;

    --shadow-soft: 0 10px 40px rgba(0, 0, 0, 0.35);
    --shadow-glow-brand:
      0 0 40px -10px color-mix(in srgb, var(--brand) 60%, transparent),
      0 0 80px -30px color-mix(in srgb, var(--brand-2) 55%, transparent);
    --shadow-glass: 0 8px 40px rgba(0, 0, 0, 0.32), 0 2px 8px rgba(0, 0, 0, 0.18);
    --message-user-background: linear-gradient(
        180deg,
        color-mix(in srgb, var(--voice-user) 10%, var(--bg-elev-2)),
        color-mix(in srgb, var(--voice-user) 6%, var(--bg-elev-2))
      )
      padding-box;
    --message-assistant-background: linear-gradient(
        180deg,
        color-mix(in srgb, var(--voice-assistant) 10%, var(--bg-elev-2)),
        color-mix(in srgb, var(--voice-assistant) 5%, var(--bg-elev-2))
      )
      padding-box;
    --message-user-border: color-mix(in srgb, var(--voice-user) 44%, var(--border));
    --message-assistant-border: color-mix(in srgb, var(--voice-assistant) 42%, var(--border));
    --message-user-shadow:
      0 10px 28px rgb(0 0 0 / 0.28), 0 0 0 1px color-mix(in srgb, var(--voice-user) 16%, rgb(255 255 255 / 0.05)) inset,
      0 0 28px -14px color-mix(in srgb, var(--voice-user) 66%, transparent);
    --message-assistant-shadow:
      0 10px 28px rgb(0 0 0 / 0.28),
      0 0 0 1px color-mix(in srgb, var(--voice-assistant) 14%, rgb(255 255 255 / 0.05)) inset,
      0 0 28px -14px color-mix(in srgb, var(--voice-assistant) 62%, transparent);

    color-scheme: dark;
  }

  html[data-theme="white"] {
    color-scheme: light;
    --bg: #ffffff;
    --bg-elev: #f8fafc;
    --bg-elev-2: #f1f5f9;
    --border: rgba(15, 23, 42, 0.08);
    --border-strong: rgba(15, 23, 42, 0.16);
    --glass: rgba(255, 255, 255, 0.85);
    --glass-strong: rgba(248, 250, 252, 0.92);
    --text: #0f172a;
    --text-dim: rgba(15, 23, 42, 0.72);
    --text-faint: rgba(15, 23, 42, 0.55);

    --brand: #1f6feb;
    --brand-2: #3b82f6;
    --brand-3: #60a5fa;
    --accent: #2563eb;
    --accent-2: #3b82f6;
    --listening: #2563eb;
    --speaking: #1d4ed8;
    --processing: #d97706;
    --error: #dc2626;
    --success: #16a34a;

    --brand-gradient: linear-gradient(135deg, #2563eb 0%, #3b82f6 55%, #60a5fa 100%);
    --brand-soft-gradient: linear-gradient(
      135deg,
      rgba(37, 99, 235, 0.18),
      rgba(59, 130, 246, 0.14) 55%,
      rgba(96, 165, 250, 0.18)
    );

    --voice-user: #2563eb;
    --voice-assistant: #64748b;
    --voice-tool: #d97706;

    --shadow-soft: 0 6px 20px rgba(15, 23, 42, 0.06);
    --shadow-glow-brand: 0 0 28px -6px rgba(37, 99, 235, 0.45), 0 0 60px -18px rgba(59, 130, 246, 0.4);
    --shadow-glass: 0 2px 12px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.04);
    --message-user-background: #dbeafe;
    --message-assistant-background: #f3f4f6;
    --message-user-border: transparent;
    --message-assistant-border: transparent;
    --message-user-shadow: none;
    --message-assistant-shadow: none;

    --app-radius-control: 10px;
    --app-radius-panel: 16px;
    --app-radius-card: 22px;
  }
}