/* ============================================================
   Caila Dev — Design Tokens
   Фундамент Crelari, адаптированный под B2B dev-инструмент.
   Холод + точечное тепло + Jay-градиент как единственный glow.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Geist:wght@300..700&family=JetBrains+Mono:ital,wght@0,400..700&display=swap');

:root {
  /* ---- Surfaces (dark by default) ---- */
  --bg-0: #08090E;
  --surface-0: #13151E;
  --surface-1: #181B26;
  --surface-2: #1F2330;
  --surface-3: #272C3B;

  /* ---- Text ---- */
  --text-0: #F3F4F6;
  --text-1: #C9CCD6;
  --text-2: #8B91A1;
  --text-3: #5A6072;

  /* ---- Jay gradient — единственный источник свечения ---- */
  --jay-from: #5BB8FF;
  --jay-to:   #8B5BFF;
  --jay-gradient: linear-gradient(135deg, #5BB8FF 0%, #8B5BFF 100%);
  --jay-gradient-soft: linear-gradient(135deg, rgba(91,184,255,.16) 0%, rgba(139,91,255,.16) 100%);

  /* ---- Warm accent — ОДНО пятно на экран ---- */
  --warm: #FFB672;
  --warm-soft: rgba(255,182,114,.14);

  /* ---- Semantic ---- */
  --success: #4EC9A1;
  --warning: #E0B85A;
  --error:   #E26B6B;

  /* ---- Provider hues (для лого-плашек, приглушённые) ---- */
  --p-anthropic: #C8855A;
  --p-openai:    #10A37F;
  --p-google:    #5B8DEF;
  --p-xai:       #C9CCD6;
  --p-mistral:   #E8924A;
  --p-meta:      #4D8BF0;
  --p-deepseek:  #6C7BFF;
  --p-sber:      #4EC9A1;
  --p-yandex:    #E0B85A;
  --p-qwen:      #9B6CFF;

  /* ---- Borders & hairlines ---- */
  --border-0: rgba(255,255,255,.06);
  --border-1: rgba(255,255,255,.09);
  --border-2: rgba(255,255,255,.14);
  --border-glow: rgba(123,140,255,.35);

  /* ---- Radii ---- */
  --r-ctrl: 6px;
  --r-card: 12px;
  --r-modal: 16px;
  --r-hero: 24px;
  --r-pill: 999px;

  /* ---- Spacing scale (base 4) ---- */
  --s-1: 4px;  --s-2: 8px;  --s-3: 12px; --s-4: 16px;
  --s-5: 20px; --s-6: 24px; --s-8: 32px; --s-12: 48px; --s-16: 64px;
  --s-20: 80px; --s-24: 96px; --s-32: 128px;

  /* ---- Type ---- */
  --font-ui: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  /* ---- Layout ---- */
  --container: 1200px;
  --container-wide: 1320px;

  /* ---- Motion ---- */
  --ease-out: cubic-bezier(.16,1,.3,1);
  --ease-in-out: cubic-bezier(.65,0,.35,1);
  --dur-1: .14s;
  --dur-2: .24s;
  --dur-3: .4s;

  /* ---- Elevation ---- */
  --shadow-card: 0 1px 0 rgba(255,255,255,.03) inset, 0 8px 24px -12px rgba(0,0,0,.6);
  --shadow-pop: 0 24px 64px -24px rgba(0,0,0,.75), 0 0 0 1px var(--border-1);
  --glow-jay: 0 0 0 1px rgba(123,140,255,.35), 0 8px 40px -8px rgba(123,140,255,.35);
}

/* ============================================================
   Reset / base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  font-family: var(--font-ui);
  background: var(--bg-0);
  color: var(--text-1);
  line-height: 1.5;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "cv01";
}

::selection { background: rgba(123,140,255,.28); color: var(--text-0); }

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul { list-style: none; }
img, svg { display: block; }

/* tabular numbers everywhere numbers appear */
.mono, code, kbd, .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
}

/* ---- Typography scale ---- */
h1, h2, h3, h4 { color: var(--text-0); font-weight: 600; line-height: 1.08; letter-spacing: -0.02em; }
.display { font-size: clamp(40px, 5.2vw, 68px); font-weight: 600; letter-spacing: -0.035em; line-height: 1.04; }
.h2 { font-size: clamp(28px, 3.4vw, 44px); letter-spacing: -0.03em; }
.h3 { font-size: clamp(20px, 2vw, 26px); letter-spacing: -0.02em; }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--text-2); font-weight: 500;
}
.lead { font-size: clamp(16px, 1.5vw, 19px); color: var(--text-2); line-height: 1.55; }

/* ---- Shared atoms ---- */
.gradient-text {
  background: var(--jay-gradient);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.warm-text { color: var(--warm); }

.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: 24px; }
.container-wide { width: 100%; max-width: var(--container-wide); margin-inline: auto; padding-inline: 24px; }

.section { padding-block: clamp(64px, 9vw, 120px); position: relative; }
.section-tight { padding-block: clamp(48px, 6vw, 80px); }

.hairline { height: 1px; background: var(--border-0); border: 0; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  height: 44px; padding-inline: 20px;
  border-radius: var(--r-ctrl);
  font-size: 14.5px; font-weight: 500; letter-spacing: -0.01em;
  transition: transform var(--dur-1) var(--ease-out),
              box-shadow var(--dur-2) var(--ease-out),
              background var(--dur-2) var(--ease-out),
              border-color var(--dur-2) var(--ease-out);
  white-space: nowrap; user-select: none;
}
.btn:active { transform: translateY(1px); }
.btn-sm { height: 36px; padding-inline: 14px; font-size: 13.5px; }
.btn-lg { height: 50px; padding-inline: 26px; font-size: 15.5px; }

.btn-primary {
  position: relative; color: #0A0B12; font-weight: 600;
  background: var(--jay-gradient);
  box-shadow: 0 1px 0 rgba(255,255,255,.25) inset, 0 8px 28px -10px rgba(123,140,255,.6);
}
.btn-primary:hover { box-shadow: 0 1px 0 rgba(255,255,255,.3) inset, 0 10px 34px -8px rgba(123,140,255,.8); }

.btn-ghost {
  color: var(--text-0);
  background: var(--surface-1);
  box-shadow: inset 0 0 0 1px var(--border-1);
}
.btn-ghost:hover { background: var(--surface-2); box-shadow: inset 0 0 0 1px var(--border-2); }

.btn-quiet { color: var(--text-1); padding-inline: 12px; }
.btn-quiet:hover { color: var(--text-0); background: var(--surface-1); }

/* ---- Pills / badges ---- */
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  height: 26px; padding-inline: 10px; border-radius: var(--r-pill);
  font-size: 12px; font-weight: 500; color: var(--text-2); white-space: nowrap;
  background: var(--surface-1); box-shadow: inset 0 0 0 1px var(--border-0);
}
.pill .dot { width: 6px; height: 6px; border-radius: 50%; }
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  height: 22px; padding-inline: 8px; border-radius: var(--r-ctrl);
  font-family: var(--font-mono); font-size: 11px; font-weight: 500;
  letter-spacing: .02em;
}
.badge-ready { color: var(--success); background: rgba(78,201,161,.1); box-shadow: inset 0 0 0 1px rgba(78,201,161,.22); }
.badge-beta  { color: var(--warning); background: rgba(224,184,90,.1); box-shadow: inset 0 0 0 1px rgba(224,184,90,.22); }
.badge-warm  { color: var(--warm); background: var(--warm-soft); box-shadow: inset 0 0 0 1px rgba(255,182,114,.28); }

/* ---- Card ---- */
.card {
  background: var(--surface-0);
  border-radius: var(--r-card);
  box-shadow: inset 0 0 0 1px var(--border-0);
  transition: box-shadow var(--dur-2) var(--ease-out), background var(--dur-2) var(--ease-out), transform var(--dur-2) var(--ease-out);
}
.card-hover:hover {
  background: var(--surface-1);
  box-shadow: inset 0 0 0 1px var(--border-2);
  transform: translateY(-2px);
}

/* ---- Diamond glyph (◇ j-token / logo signature) ---- */
.diamond {
  display: inline-block; width: 1em; height: 1em;
  background: var(--jay-gradient);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

/* ---- focus ring ---- */
:focus-visible { outline: 2px solid var(--jay-from); outline-offset: 2px; border-radius: 4px; }

/* reduce motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}