/* =========================================================
   ZELAVION — Design tokens
   "Ember & Iris" — warm amber primary on chocolate-tinted ink
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:opsz,wght@12..96,300..700&family=Geist:wght@300..700&family=Geist+Mono:wght@400..600&display=swap');

:root {
  /* ---------- PRIMARY — EMBER ---------- */
  --ember-50:  #FFF1E8;
  --ember-100: #FFDAC0;
  --ember-200: #FFB890;
  --ember-300: #FF9460;
  --ember-400: #F57440;   /* primary */
  --ember-500: #E25A2A;   /* primary dark */
  --ember-600: #B8431D;
  --ember-700: #8A3115;

  --primary:        var(--ember-400);
  --primary-dark:   var(--ember-500);
  --primary-light:  var(--ember-100);
  --primary-tint:   color-mix(in oklab, var(--ember-400) 12%, transparent);
  --primary-fg:     #1A0C05;

  /* ---------- ARIA — IRIS ---------- */
  --iris-50:  #F1ECFF;
  --iris-100: #DBCEFF;
  --iris-300: #B59BFF;
  --iris-400: #8E6BFF;
  --iris-500: #6E50E0;
  --iris-glow: #C5A8FF;

  /* ---------- SURFACES — warm chocolate-ink (dark) ---------- */
  --s0: #0B0908;       /* deepest — page bg behind content */
  --s1: #131110;       /* main app surface */
  --s2: #1B1816;       /* cards, sidebars */
  --s3: #25201D;       /* inputs, elevated */
  --s4: #322B27;       /* borders, dividers */
  --s5: #463D37;       /* hover borders */

  /* ---------- TEXT ---------- */
  --t1: #F4ECE3;       /* primary */
  --t2: #B5A89A;       /* secondary */
  --t3: #786C61;       /* tertiary / placeholder */
  --t-on-primary: #1A0C05;

  /* ---------- STATUS ---------- */
  --success: #4FC78A;
  --success-bg: color-mix(in oklab, #4FC78A 14%, transparent);
  --warning: #E8A93A;
  --warning-bg: color-mix(in oklab, #E8A93A 14%, transparent);
  --error: #E55F70;
  --error-bg: color-mix(in oklab, #E55F70 14%, transparent);
  --info: #5E91D9;
  --info-bg: color-mix(in oklab, #5E91D9 14%, transparent);

  /* ---------- SIGNATURE GRADIENTS ---------- */
  --grad-zelavion: linear-gradient(135deg, #F57440 0%, #E25A2A 35%, #B43E78 75%, #6E50E0 100%);
  --grad-zelavion-soft: radial-gradient(120% 80% at 20% 0%, rgba(245,116,64,0.18) 0%, rgba(110,80,224,0.08) 45%, transparent 75%);
  --grad-aria: linear-gradient(135deg, #B59BFF 0%, #8E6BFF 50%, #6E50E0 100%);
  --grad-aria-soft: radial-gradient(circle at 30% 30%, rgba(181,155,255,0.6) 0%, rgba(110,80,224,0.2) 50%, transparent 80%);

  /* ---------- TYPE ---------- */
  --font-display: "Bricolage Grotesque", "Inter Tight", system-ui, sans-serif;
  --font-ui: "Geist", "Inter", system-ui, sans-serif;
  --font-mono: "Geist Mono", "JetBrains Mono", ui-monospace, monospace;

  --text-xs:   11px;
  --text-sm:   12px;
  --text-base: 13px;
  --text-md:   14px;
  --text-lg:   16px;
  --text-xl:   18px;
  --text-2xl:  22px;
  --text-3xl:  28px;
  --text-4xl:  36px;
  --text-5xl:  48px;
  --text-6xl:  64px;

  /* ---------- SPACING (4-grid) ---------- */
  --sp-1:   4px;
  --sp-2:   8px;
  --sp-3:   12px;
  --sp-4:   16px;
  --sp-5:   20px;
  --sp-6:   24px;
  --sp-8:   32px;
  --sp-10:  40px;
  --sp-12:  48px;
  --sp-16:  64px;
  --sp-20:  80px;
  --sp-24:  96px;
  --sp-32:  128px;

  /* ---------- RADII ---------- */
  --r-sm: 4px;
  --r-md: 8px;
  --r-lg: 12px;
  --r-xl: 16px;
  --r-2xl: 20px;
  --r-pill: 9999px;

  /* ---------- SHADOWS ---------- */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.35), 0 0 0 1px rgba(255,255,255,0.02);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.45), 0 0 0 1px rgba(255,255,255,0.03);
  --shadow-lg: 0 24px 60px rgba(0,0,0,0.55), 0 0 0 1px rgba(255,255,255,0.04);
  --shadow-glow-ember: 0 0 0 1px rgba(245,116,64,0.35), 0 8px 32px -4px rgba(245,116,64,0.4);
  --shadow-glow-iris: 0 0 0 1px rgba(181,155,255,0.3), 0 8px 32px -4px rgba(142,107,255,0.4);

  /* ---------- MOTION ---------- */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.7, 0, 0.84, 0);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --t-micro: 150ms;
  --t-base: 250ms;
  --t-enter: 400ms;
}

/* ========== RESET & BASE ========== */
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--s0);
  color: var(--t1);
  font-family: var(--font-ui);
  font-size: var(--text-base);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'cv11', 'ss01', 'ss03';
}

body {
  background:
    radial-gradient(circle at 0% 0%, rgba(245,116,64,0.04) 0%, transparent 50%),
    radial-gradient(circle at 100% 100%, rgba(110,80,224,0.03) 0%, transparent 50%),
    var(--s0);
  min-height: 100vh;
}

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }
input, textarea, select { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }

::selection { background: var(--primary); color: var(--primary-fg); }

/* Scrollbars */
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb { background: var(--s4); border-radius: 99px; border: 2px solid transparent; background-clip: padding-box; }
*::-webkit-scrollbar-thumb:hover { background: var(--s5); background-clip: padding-box; border: 2px solid transparent; }

/* Display utils */
.font-display { font-family: var(--font-display); font-optical-sizing: auto; }
.font-mono { font-family: var(--font-mono); }
.tabular { font-variant-numeric: tabular-nums; }
.tracking-tight { letter-spacing: -0.02em; }
.tracking-tighter { letter-spacing: -0.03em; }

/* ========== COMPONENT PRIMITIVES ========== */

.card {
  background: var(--s2);
  border: 1px solid var(--s4);
  border-radius: var(--r-lg);
}

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  height: 36px;
  padding: 0 14px;
  font-size: var(--text-base);
  font-weight: 500;
  border-radius: var(--r-md);
  letter-spacing: -0.005em;
  transition: background var(--t-micro) var(--ease-out), border-color var(--t-micro) var(--ease-out), transform var(--t-micro) var(--ease-out);
  white-space: nowrap;
}
.btn:active { transform: translateY(0.5px); }

.btn-primary {
  background: var(--primary);
  color: var(--primary-fg);
}
.btn-primary:hover { background: color-mix(in oklab, var(--primary) 92%, white); }

.btn-secondary {
  background: var(--s3);
  color: var(--t1);
  border: 1px solid var(--s4);
}
.btn-secondary:hover { background: var(--s4); border-color: var(--s5); }

.btn-ghost {
  color: var(--t2);
}
.btn-ghost:hover { color: var(--t1); background: var(--s3); }

.btn-sm { height: 28px; padding: 0 10px; font-size: var(--text-sm); border-radius: var(--r-sm); }
.btn-lg { height: 44px; padding: 0 18px; font-size: var(--text-md); border-radius: var(--r-md); }

.input, .textarea {
  background: var(--s3);
  border: 1px solid var(--s4);
  border-radius: var(--r-md);
  padding: 9px 12px;
  font-size: var(--text-base);
  color: var(--t1);
  outline: none;
  transition: border-color var(--t-micro) var(--ease-out), box-shadow var(--t-micro) var(--ease-out);
  width: 100%;
}
.input:focus, .textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-tint);
}
.input::placeholder, .textarea::placeholder { color: var(--t3); }

.chip {
  display: inline-flex; align-items: center; gap: 6px;
  height: 22px;
  padding: 0 8px;
  font-size: var(--text-xs);
  font-weight: 500;
  border-radius: var(--r-pill);
  background: var(--s3);
  color: var(--t2);
  border: 1px solid var(--s4);
  letter-spacing: 0.01em;
}
.chip-primary { background: var(--primary-tint); color: var(--ember-300); border-color: rgba(245,116,64,0.3); }
.chip-success { background: var(--success-bg); color: var(--success); border-color: color-mix(in oklab, var(--success) 30%, transparent); }
.chip-warning { background: var(--warning-bg); color: var(--warning); border-color: color-mix(in oklab, var(--warning) 30%, transparent); }
.chip-error   { background: var(--error-bg); color: var(--error); border-color: color-mix(in oklab, var(--error) 30%, transparent); }
.chip-info    { background: var(--info-bg); color: var(--info); border-color: color-mix(in oklab, var(--info) 30%, transparent); }

.divider { height: 1px; background: var(--s4); border: 0; }

.kbd {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 20px; height: 20px; padding: 0 5px;
  font-family: var(--font-mono); font-size: 10px;
  background: var(--s3); border: 1px solid var(--s4); border-bottom-width: 2px;
  border-radius: var(--r-sm); color: var(--t2);
}

/* Eyebrow / cap label */
.eyebrow {
  font-size: 10px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--t3);
  font-family: var(--font-mono);
}