/* ============================================================================
   Panalo design tokens
   ----------------------------------------------------------------------------
   Every colour, radius, shadow, duration and font in the product comes from
   here. Components never hard-code a colour; they ask for a role
   (--surface, --text-2, --primary-soft...). That is what lets one attribute
   on <html> switch the whole app between light and dark, and one inline
   variable re-tint it with a different accent.

   Attributes on <html> (set before first paint by src/boot.js):
     data-theme     light | dark          resolved from Settings (auto → OS)
     data-density   comfortable | compact
     data-bubbles   round | soft | crisp  message bubble shape
     data-text      s | m | l             chat text size
     data-motion    reduce                user asked for less motion

   Accent: --primary / --primary-strong / --on-primary are written inline by
   src/appearance.js (app-wide) and per chat on .chat-main by chat.js. Every
   other accent shade is derived here with color-mix, so a new accent is one
   entry in config.js, not a new block of CSS.
   ========================================================================== */

:root {
  /* ---- Accent (overridden inline; these are Ember, the brand default) ---- */
  --primary: #d83b17;
  --primary-strong: #b02c0d;
  --on-primary: #ffffff;
  /* ---- Brand constants (logo, landing art) ---- */
  --brand-ember: #d83b17;
  --brand-coral: #ff7a45;
  --brand-sun: #ffc24b;
  --brand-grape: #7b45e0;
  --brand-ink: #15121c;

  /* ---- Status ---- */
  --danger: #c42b2b;
  --danger-soft: color-mix(in oklab, var(--danger) 12%, transparent);
  --success: #1b8a52;
  --success-soft: color-mix(in oklab, var(--success) 13%, transparent);
  --warning: #a3620a;
  --warning-soft: color-mix(in oklab, var(--warning) 14%, transparent);
  --online: #22b573;

  /* ---- Typography ---- */
  --font-ui: "Inter", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-display: "Bricolage Grotesque", "Inter", "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Consolas, monospace;
  --chat-font: var(--font-ui);

  --fs-xs: 0.75rem;   /* 12 */
  --fs-sm: 0.8125rem; /* 13 */
  --fs-md: 0.9375rem; /* 15 */
  --fs-lg: 1.0625rem; /* 17 */
  --fs-xl: 1.375rem;  /* 22 */
  --fs-2xl: 1.75rem;  /* 28 */
  --fs-3xl: clamp(2.25rem, 1.2rem + 3.6vw, 4.25rem);
  --chat-text: 0.96875rem; /* 15.5 */

  /* ---- Space (4px grid) ---- */
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 20px;
  --s-6: 24px;
  --s-8: 32px;
  --s-10: 40px;
  --s-12: 48px;
  --s-16: 64px;

  /* ---- Radius ---- */
  --r-xs: 6px;
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 28px;
  --r-full: 999px;
  --bubble-r: 20px;
  --bubble-r-tight: 6px;

  /* ---- Motion ---- */
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur-1: 120ms;
  --dur-2: 200ms;
  --dur-3: 320ms;

  /* ---- Layout ---- */
  --rail-w: 72px;
  --sidebar-w: 348px;
  --drawer-w: 360px;
  --shell-gap: 8px;
  --row-h: 68px;
  --tap: 44px;

  /* ---- Z layers ---- */
  --z-app: 1;
  --z-drawer: 30;
  --z-popover: 60;
  --z-modal: 80;
  --z-toast: 95;
  --z-call: 100;
  --z-lock: 110;
  --z-cursor: 120;

  color-scheme: light;
}

/* ---------------------------------------------------------------------------
   Derived accent roles.
   A custom property's var() is resolved where it is DECLARED, so shades
   derived on :root alone would ignore a per-chat accent set inline on
   .chat-main. Re-declaring them on every accent scope keeps them in step.
   ------------------------------------------------------------------------- */
:root,
.chat-main,
.accent-scope {
  --grad: linear-gradient(135deg, var(--primary), color-mix(in oklab, var(--primary) 74%, #ffb45e));
  --bubble-out: var(--primary);
  --primary-soft: color-mix(in oklab, var(--primary) 12%, transparent);
  --primary-softer: color-mix(in oklab, var(--primary) 7%, transparent);
  --primary-line: color-mix(in oklab, var(--primary) 32%, transparent);
  --primary-text: color-mix(in oklab, var(--primary) 84%, black);
}
:root[data-theme="dark"],
:root[data-theme="dark"] .chat-main,
:root[data-theme="dark"] .accent-scope {
  --primary-text: color-mix(in oklab, var(--primary) 60%, white);
  --primary-soft: color-mix(in oklab, var(--primary) 22%, transparent);
  --primary-softer: color-mix(in oklab, var(--primary) 12%, transparent);
  --primary-line: color-mix(in oklab, var(--primary) 48%, transparent);
}

/* ---------------------------------------------------------------------------
   Light — warm paper, ink text. The default when the OS doesn't say.
   ------------------------------------------------------------------------- */
:root,
:root[data-theme="light"] {
  --bg: #f3efe9;
  --bg-tint: #ece6de;
  --surface: #ffffff;
  --surface-2: #f7f4f0;
  --surface-3: #eee9e2;
  --surface-hover: #f4f0ea;
  --surface-sunken: #efeae3;
  --surface-glass: color-mix(in oklab, #ffffff 82%, transparent);
  --overlay: rgba(20, 16, 26, 0.42);

  --text: #1b1822;
  --text-2: #56505d;
  --text-3: #716a78;
  --text-on-media: #ffffff;
  --border: #e6e0d8;
  --border-strong: #d5cdc3;
  --divider: color-mix(in oklab, #1b1822 8%, transparent);

  --bubble-in: #ffffff;
  --bubble-in-text: var(--text);
  --bubble-in-border: #e9e3db;
  --bubble-out-text: var(--on-primary);

  --shadow-1: 0 1px 2px rgba(27, 24, 34, 0.06), 0 1px 1px rgba(27, 24, 34, 0.04);
  --shadow-2: 0 4px 14px rgba(27, 24, 34, 0.08), 0 1px 3px rgba(27, 24, 34, 0.05);
  --shadow-3: 0 18px 48px rgba(27, 24, 34, 0.16), 0 4px 12px rgba(27, 24, 34, 0.06);
  --shadow-panel: 0 1px 0 rgba(255, 255, 255, 0.7) inset, 0 1px 3px rgba(27, 24, 34, 0.05);

  --wp-ink: #3b2f26;
  --wp-alpha: 1;
  --skeleton: #ebe5dd;
  --skeleton-hi: #f6f2ec;
  --scrim-media: linear-gradient(180deg, transparent 55%, rgba(0, 0, 0, 0.45));
  --avatar-sat: 46%;
  --avatar-light: 48%;

  --focus: 0 0 0 2px var(--surface), 0 0 0 4px color-mix(in oklab, var(--primary) 70%, #1b1822);
}

/* ---------------------------------------------------------------------------
   Dark — "Midnight": deep navy with a blue-violet glow, never pure black.
   Every text role here is AA on every surface (checked by calculation).
   ------------------------------------------------------------------------- */
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #070b16;
  --bg-tint: #0b1120;
  --surface: #0e1424;
  --surface-2: #131a2d;
  --surface-3: #1b2338;
  --surface-hover: #161e33;
  --surface-sunken: #0a0f1c;
  --surface-glass: color-mix(in oklab, #0e1424 76%, transparent);
  --overlay: rgba(3, 6, 14, 0.68);

  --text: #eef2fb;
  --text-2: #b3bdd3;
  --text-3: #8b96ae;
  --border: #1f2940;
  --border-strong: #2d3957;
  --divider: color-mix(in oklab, #ffffff 7%, transparent);

  --bubble-in: #19213a;
  --bubble-in-text: var(--text);
  --bubble-in-border: #243050;

  --danger: #f0645c;
  --success: #3ccb84;
  --warning: #f0b243;

  --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.45);
  --shadow-2: 0 6px 18px rgba(0, 0, 0, 0.5), 0 1px 3px rgba(0, 0, 0, 0.35);
  --shadow-3: 0 24px 60px rgba(0, 0, 0, 0.65), 0 4px 14px rgba(0, 0, 0, 0.4);
  --shadow-panel: 0 0 0 1px rgba(140, 170, 255, 0.04) inset;

  /* The glow behind everything: electric blue and violet. */
  --glow-a: #2f6fe4;
  --glow-b: #7b45e0;

  --wp-ink: #cdd8f5;
  --wp-alpha: 0.5;
  --skeleton: #182038;
  --skeleton-hi: #212b47;
  --avatar-sat: 55%;
  --avatar-light: 56%;

  --focus: 0 0 0 2px var(--surface), 0 0 0 4px color-mix(in oklab, var(--primary) 60%, white);
}

/* ---- Density ---- */
:root[data-density="compact"] {
  --row-h: 56px;
  --shell-gap: 6px;
}

/* ---- Bubble shape ---- */
:root[data-bubbles="soft"] {
  --bubble-r: 14px;
  --bubble-r-tight: 5px;
}
:root[data-bubbles="crisp"] {
  --bubble-r: 8px;
  --bubble-r-tight: 3px;
}

/* ---- Chat text size ---- */
:root[data-text="s"] { --chat-text: 0.875rem; }
:root[data-text="l"] { --chat-text: 1.09375rem; }

/* ---- Motion ---------------------------------------------------------------
   The OS preference always wins; the in-app switch can only ask for LESS. */
@media (prefers-reduced-motion: reduce) {
  :root {
    --dur-1: 0ms;
    --dur-2: 0ms;
    --dur-3: 0ms;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}
:root[data-motion="reduce"] {
  --dur-1: 0ms;
  --dur-2: 0ms;
  --dur-3: 0ms;
}
:root[data-motion="reduce"] *,
:root[data-motion="reduce"] *::before,
:root[data-motion="reduce"] *::after {
  animation-duration: 0.001ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.001ms !important;
  scroll-behavior: auto !important;
}