@import "tailwindcss";

@custom-variant dark (&:where(.dark, .dark *));
/* Pointer-aware variants: `coarse:` = touch devices, `fine:` = mouse/trackpad. */
@custom-variant coarse (@media (pointer: coarse));
@custom-variant fine (@media (pointer: fine));
@custom-variant standalone (@media (display-mode: standalone));

@theme {
  --font-sans: var(--font-geist-sans), ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: var(--font-geist-mono), ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* ---- Semantic colors (values live in :root / .dark below) ---------------- */
  --color-bg: var(--bg);
  --color-bg-subtle: var(--bg-subtle);
  --color-bg-muted: var(--bg-muted);
  --color-bg-elevated: var(--bg-elevated);
  --color-bg-overlay: var(--bg-overlay);
  --color-bg-inset: var(--bg-inset);
  --color-fg: var(--fg);
  --color-fg-muted: var(--fg-muted);
  --color-fg-subtle: var(--fg-subtle);
  --color-border: var(--border);
  --color-border-strong: var(--border-strong);
  --color-hairline: var(--hairline);
  --color-accent: var(--accent);
  --color-accent-fg: var(--accent-fg);
  --color-accent-soft: var(--accent-soft);
  --color-accent-strong: var(--accent-strong);
  --color-success: var(--success);
  --color-success-soft: var(--success-soft);
  --color-warning: var(--warning);
  --color-warning-soft: var(--warning-soft);
  --color-danger: var(--danger);
  --color-danger-soft: var(--danger-soft);
  --color-info: var(--info);
  --color-info-soft: var(--info-soft);
  --color-ring: var(--accent);

  --color-openai: var(--p-openai);
  --color-anthropic: var(--p-anthropic);
  --color-gemini: var(--p-gemini);
  --color-xai: var(--p-xai);
  --color-mistral: var(--p-mistral);
  --color-deepseek: var(--p-deepseek);
  --color-kimi: var(--p-kimi);
  --color-openrouter: var(--p-openrouter);
  --color-cerebras: var(--p-cerebras);
  --color-custom: var(--p-custom);

  /* ---- Radii ---------------------------------------------------------------- */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 22px;
  --radius-3xl: 28px;

  /* ---- Elevation: soft, layered, low-contrast -------------------------------- */
  --shadow-xs: 0 1px 2px rgb(15 17 26 / 0.05);
  --shadow-sm: 0 1px 2px rgb(15 17 26 / 0.06), 0 2px 6px -2px rgb(15 17 26 / 0.06);
  --shadow-md: 0 2px 4px -1px rgb(15 17 26 / 0.06), 0 10px 24px -8px rgb(15 17 26 / 0.12);
  --shadow-lg: 0 4px 8px -2px rgb(15 17 26 / 0.08), 0 24px 56px -16px rgb(15 17 26 / 0.22);
  --shadow-sheet: 0 -8px 40px -12px rgb(15 17 26 / 0.28);
  --shadow-glow: 0 0 0 1px var(--accent-soft), 0 8px 32px -8px color-mix(in srgb, var(--accent) 55%, transparent);
  --shadow-ring: 0 0 0 1px var(--border);

  /* ---- Type scale (fluid on small screens) ----------------------------------- */
  --text-2xs: 10.5px;
  --text-2xs--line-height: 14px;
  --text-xs: 11.5px;
  --text-xs--line-height: 16px;
  --text-sm: 13px;
  --text-sm--line-height: 18px;
  --text-base: 15px;
  --text-base--line-height: 22px;
  --text-lg: 17px;
  --text-lg--line-height: 24px;
  --text-xl: 20px;
  --text-xl--line-height: 26px;
  --text-2xl: 24px;
  --text-2xl--line-height: 30px;
  --text-3xl: clamp(28px, 2.4vw + 18px, 34px);
  --text-3xl--line-height: 1.15;
  --text-4xl: clamp(34px, 3.2vw + 20px, 46px);
  --text-4xl--line-height: 1.08;
  --text-5xl: clamp(40px, 4.4vw + 22px, 62px);
  --text-5xl--line-height: 1.02;

  /* ---- Motion --------------------------------------------------------------- */
  --ease-out-soft: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.3, 0.64, 1);
  --animate-fade-in: fade-in 0.18s ease-out both;
  --animate-fade-out: fade-out 0.16s ease-in both;
  --animate-fade-up: fade-up 0.32s var(--ease-out-soft) both;
  --animate-scale-in: scale-in 0.18s var(--ease-out-soft) both;
  --animate-scale-out: scale-out 0.14s ease-in both;
  --animate-sheet-in: sheet-in 0.32s var(--ease-out-soft) both;
  --animate-sheet-out: sheet-out 0.22s ease-in both;
  --animate-drawer-in: drawer-in 0.28s var(--ease-out-soft) both;
  --animate-drawer-out: drawer-out 0.2s ease-in both;
  --animate-slide-down-in: slide-down-in 0.22s var(--ease-out-soft) both;
  --animate-blink: blink 1s steps(2, start) infinite;
  --animate-shimmer: shimmer 1.6s linear infinite;
  --animate-pulse-soft: pulse-soft 2s ease-in-out infinite;
  --animate-pop: pop 0.32s var(--ease-spring) both;
  --animate-marquee: marquee 48s linear infinite;
  --animate-stream-glow: stream-glow 1.8s ease-in-out infinite;

  @keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
  @keyframes fade-out { from { opacity: 1; } to { opacity: 0; } }
  @keyframes fade-up { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
  @keyframes scale-in { from { opacity: 0; transform: scale(0.97); } to { opacity: 1; transform: scale(1); } }
  @keyframes scale-out { from { opacity: 1; transform: scale(1); } to { opacity: 0; transform: scale(0.97); } }
  @keyframes sheet-in { from { transform: translateY(100%); } to { transform: translateY(0); } }
  @keyframes sheet-out { from { transform: translateY(0); } to { transform: translateY(100%); } }
  @keyframes drawer-in { from { transform: translateX(-100%); } to { transform: translateX(0); } }
  @keyframes drawer-out { from { transform: translateX(0); } to { transform: translateX(-100%); } }
  @keyframes slide-down-in { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: translateY(0); } }
  @keyframes blink { to { visibility: hidden; } }
  @keyframes shimmer { from { background-position: -200% 0; } to { background-position: 200% 0; } }
  @keyframes pulse-soft { 0%, 100% { opacity: 1; } 50% { opacity: 0.45; } }
  @keyframes pop { 0% { transform: scale(0.6); opacity: 0; } 60% { transform: scale(1.12); opacity: 1; } 100% { transform: scale(1); } }
  @keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
  @keyframes stream-glow { 0%, 100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 0%, transparent); } 50% { box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 18%, transparent); } }
}

/* ---------------------------------------------------------------------------
   Palette — warm graphite neutrals + iris accent. Light and dark are tuned to
   the same perceptual contrast so components need no per-theme overrides.
   --------------------------------------------------------------------------- */
:root {
  color-scheme: light;
  --bg: #f7f7f5;
  --bg-subtle: #f1f1ee;
  --bg-muted: #e9e9e5;
  --bg-elevated: #ffffff;
  --bg-inset: #ececea;
  --bg-overlay: rgb(247 247 245 / 0.9);
  --fg: #14151a;
  --fg-muted: #5c6070;
  --fg-subtle: #8b8f9d;
  --border: #e3e3df;
  --border-strong: #cdcdc8;
  --hairline: rgb(20 21 26 / 0.07);
  --accent: #5457d6;
  --accent-strong: #4144c4;
  --accent-fg: #ffffff;
  --accent-soft: #e8e8fb;
  --success: #1c9a5d;
  --success-soft: #e1f5e9;
  --warning: #b8720f;
  --warning-soft: #fbefd6;
  --danger: #d03540;
  --danger-soft: #fbe4e6;
  --info: #2779cf;
  --info-soft: #e1eefb;

  --p-openai: #10a37f;
  --p-anthropic: #d97757;
  --p-gemini: #3b82f6;
  --p-xai: #303540;
  --p-mistral: #e8590c;
  --p-deepseek: #4d6bfe;
  --p-kimi: #0f766e;
  --p-openrouter: #6b46c1;
  --p-cerebras: #c2410c;
  --p-custom: #64748b;

  --selection: rgb(84 87 214 / 0.18);
  --sat: env(safe-area-inset-top, 0px);
  --sab: env(safe-area-inset-bottom, 0px);
  --sal: env(safe-area-inset-left, 0px);
  --sar: env(safe-area-inset-right, 0px);
  /* Height of the mobile bottom navigation (without the safe area). */
  --bottom-nav-h: 56px;
  /* Set by the keyboard hook: pixels hidden by the on-screen keyboard. */
  --kb: 0px;
}

.dark {
  color-scheme: dark;
  --bg: #0b0c10;
  --bg-subtle: #10121a;
  --bg-muted: #171923;
  --bg-elevated: #13151d;
  --bg-inset: #0e0f15;
  --bg-overlay: rgb(11 12 16 / 0.9);
  --fg: #f1f2f6;
  --fg-muted: #9a9fb1;
  --fg-subtle: #676d7e;
  --border: #1f222c;
  --border-strong: #2c3040;
  --hairline: rgb(241 242 246 / 0.07);
  --accent: #8b8dff;
  --accent-strong: #a3a5ff;
  --accent-fg: #0b0c10;
  --accent-soft: rgb(139 141 255 / 0.14);
  --success: #3ccf82;
  --success-soft: rgb(60 207 130 / 0.14);
  --warning: #f0b35a;
  --warning-soft: rgb(240 179 90 / 0.14);
  --danger: #ff6b70;
  --danger-soft: rgb(255 107 112 / 0.14);
  --info: #5aa8ff;
  --info-soft: rgb(90 168 255 / 0.14);

  --p-openai: #34c99b;
  --p-anthropic: #e69375;
  --p-gemini: #6aa2ff;
  --p-xai: #d5d8e0;
  --p-mistral: #ff8a3d;
  --p-deepseek: #7d93ff;
  --p-kimi: #2dd4bf;
  --p-openrouter: #a78bfa;
  --p-cerebras: #fb923c;
  --p-custom: #9aa3b5;

  --selection: rgb(139 141 255 / 0.28);
}

@layer base {
  * { border-color: var(--border); }
  html {
    -webkit-text-size-adjust: 100%;
    text-rendering: optimizeLegibility;
    scroll-behavior: auto;
    /* iOS: never let the root rubber-band; scroll containers own overscroll. */
    overscroll-behavior: none;
    -webkit-tap-highlight-color: transparent;
  }
  body {
    background: var(--bg);
    color: var(--fg);
    font-family: var(--font-sans);
    font-feature-settings: "cv11", "ss01", "ss03";
    -webkit-font-smoothing: antialiased;
    overscroll-behavior-y: none;
    min-height: 100dvh;
  }
  ::selection { background: var(--selection); }
  :focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
  button, [role="button"] { cursor: pointer; touch-action: manipulation; }
  button:disabled { cursor: not-allowed; }
  input, textarea, select { font: inherit; }
  /* iOS zooms into inputs below 16px; keep them at 16px on coarse pointers. */
  @media (pointer: coarse) { input, textarea, select { font-size: max(16px, 1em); } }
  code, kbd, pre, samp { font-family: var(--font-mono); font-feature-settings: "liga" 0; }
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
  }
}

@layer components {
  .scrollbar-thin { scrollbar-width: thin; scrollbar-color: var(--border-strong) transparent; }
  .scrollbar-thin::-webkit-scrollbar { width: 8px; height: 8px; }
  .scrollbar-thin::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 8px; }
  .scrollbar-none { scrollbar-width: none; }
  .scrollbar-none::-webkit-scrollbar { display: none; }

  .glass { background: var(--bg-overlay); backdrop-filter: saturate(160%) blur(16px); -webkit-backdrop-filter: saturate(160%) blur(16px); }
  .glass-strong { background: color-mix(in srgb, var(--bg-elevated) 88%, transparent); backdrop-filter: saturate(180%) blur(24px); -webkit-backdrop-filter: saturate(180%) blur(24px); }

  .text-gradient {
    background: linear-gradient(120deg, var(--accent) 0%, #b58cff 55%, #ff8fab 100%);
    -webkit-background-clip: text; background-clip: text; color: transparent;
  }
  .surface { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-lg); }
  /* Soft, borderless grouping — preferred over cards for dense professional UI. */
  .panel { background: var(--bg-subtle); border-radius: var(--radius-xl); }
  .hairline-b { box-shadow: inset 0 -1px 0 var(--hairline); }
  .hairline-t { box-shadow: inset 0 1px 0 var(--hairline); }
  .kbd {
    display: inline-flex; align-items: center; justify-content: center; min-width: 1.4rem; height: 1.25rem; padding: 0 0.35rem;
    border-radius: 5px; border: 1px solid var(--border-strong); background: var(--bg-subtle); color: var(--fg-muted);
    font-family: var(--font-mono); font-size: 10.5px; line-height: 1;
  }
  .shimmer {
    background: linear-gradient(90deg, var(--bg-muted) 25%, var(--bg-subtle) 50%, var(--bg-muted) 75%);
    background-size: 200% 100%; animation: var(--animate-shimmer);
  }
  .caret::after { content: "▍"; color: var(--accent); animation: var(--animate-blink); margin-left: 1px; }
  .dot-grid {
    background-image: radial-gradient(var(--border-strong) 1px, transparent 1px);
    background-size: 22px 22px;
  }
  /* Minimum 44px hit area regardless of the visual size. */
  .tap { position: relative; }
  .tap::after { content: ""; position: absolute; inset: 50% auto auto 50%; width: max(100%, 44px); height: max(100%, 44px); transform: translate(-50%, -50%); }
  /* Safe-area helpers */
  .pt-safe { padding-top: var(--sat); }
  .pb-safe { padding-bottom: var(--sab); }
  .pl-safe { padding-left: var(--sal); }
  .pr-safe { padding-right: var(--sar); }
  .px-safe { padding-left: var(--sal); padding-right: var(--sar); }
  .mb-safe { margin-bottom: var(--sab); }
  /* Space reserved for the mobile bottom navigation. */
  .pb-nav { padding-bottom: calc(var(--bottom-nav-h) + var(--sab)); }
  /* Full app height that tracks the on-screen keyboard (set by useKeyboardInset). */
  .h-app { height: calc(100dvh - var(--kb)); }
  .min-h-app { min-height: calc(100dvh - var(--kb)); }
  /* Sheet drag handle */
  .sheet-handle { width: 36px; height: 5px; border-radius: 999px; background: var(--border-strong); margin: 8px auto 4px; }
  /* Horizontal snap carousel (Arena / compare panels on mobile) */
  .snap-row { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
  .snap-row::-webkit-scrollbar { display: none; }
  .snap-row > * { scroll-snap-align: center; scroll-snap-stop: always; flex: 0 0 100%; }
  /* Hide only the scroll chaining, keep the scroll */
  .contain-scroll { overscroll-behavior: contain; }
  .touch-pan-y { touch-action: pan-y; }
  .touch-pan-x { touch-action: pan-x; }
  /* Hover-revealed controls: always visible on touch devices. */
  .hover-reveal { opacity: 0; transition: opacity 150ms; }
  .group:hover .hover-reveal, .group:focus-within .hover-reveal, .hover-reveal:focus-visible { opacity: 1; }
  @media (pointer: coarse) { .hover-reveal { opacity: 1; } }
  /* Marquee strip */
  .marquee { display: flex; width: max-content; animation: var(--animate-marquee); }
  .marquee:hover { animation-play-state: paused; }
  .mask-x { mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
  .mask-b { mask-image: linear-gradient(180deg, #000 70%, transparent); }
  .tabular { font-variant-numeric: tabular-nums; }
  .text-balance { text-wrap: balance; }
  .text-pretty { text-wrap: pretty; }
}

/* Markdown (chat messages) */
.prose-chat { line-height: 1.65; font-size: 15px; word-break: break-word; overflow-wrap: anywhere; }
.prose-chat > * + * { margin-top: 0.75em; }
.prose-chat h1, .prose-chat h2, .prose-chat h3, .prose-chat h4 { font-weight: 650; letter-spacing: -0.01em; line-height: 1.3; margin-top: 1.2em; }
.prose-chat h1 { font-size: 1.35em; } .prose-chat h2 { font-size: 1.2em; } .prose-chat h3 { font-size: 1.08em; } .prose-chat h4 { font-size: 1em; }
.prose-chat p { margin: 0; }
.prose-chat p + p { margin-top: 0.75em; }
.prose-chat a { color: var(--accent); text-decoration: underline; text-decoration-color: color-mix(in srgb, var(--accent) 40%, transparent); text-underline-offset: 3px; }
.prose-chat ul, .prose-chat ol { padding-left: 1.4em; }
.prose-chat ul { list-style: disc; } .prose-chat ol { list-style: decimal; }
.prose-chat li + li { margin-top: 0.25em; }
.prose-chat li > ul, .prose-chat li > ol { margin-top: 0.25em; }
.prose-chat blockquote { border-left: 3px solid var(--border-strong); padding-left: 0.9em; color: var(--fg-muted); }
.prose-chat hr { border: 0; border-top: 1px solid var(--border); margin: 1.2em 0; }
.prose-chat :not(pre) > code { font-size: 0.86em; background: var(--bg-muted); border: 1px solid var(--border); padding: 0.1em 0.38em; border-radius: 5px; }
.prose-chat pre { margin: 0; }
.prose-chat table { width: 100%; border-collapse: collapse; font-size: 0.92em; display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.prose-chat th, .prose-chat td { border: 1px solid var(--border); padding: 0.4em 0.7em; text-align: left; vertical-align: top; }
.prose-chat th { background: var(--bg-subtle); font-weight: 600; }
.prose-chat img { max-width: 100%; border-radius: 8px; }
.prose-chat.wrap-code pre code { white-space: pre-wrap; word-break: break-word; }
.prose-chat .katex-display { overflow-x: auto; overflow-y: hidden; padding: 0.2em 0; }

/* Shiki */
.shiki, .shiki span { background-color: transparent !important; }
.dark .shiki, .dark .shiki span { color: var(--shiki-dark) !important; }

/* Recharts: inherit the type system */
.recharts-text { font-family: var(--font-sans); }
.recharts-default-tooltip { border-radius: 10px !important; border: 1px solid var(--border) !important; background: var(--bg-elevated) !important; box-shadow: var(--shadow-md); }

/* Standalone PWA: reserve the status bar area */
@media (display-mode: standalone) {
  body { padding-top: 0; }
}