/* =============================================================
   HaloScape Design System — Tokens
   -------------------------------------------------------------
   Primary palette: black & white.
     Ink & paper are the loudest voices. Every screen reads as
     editorial monochrome first; color is earned, not sprinkled.
   Accent roles (used sparingly, never everywhere):
     · Brand signature  → the iridescent orb gradient
     · Detail identity  → one biomarker gradient per tile
     · Domain indicator → category dot / ring / rule (not a fill)
     · Ambient mood     → one gradient canvas per reflection screen
   ============================================================= */

/* Brand fonts — Inter Tight (primary) + Poppins (secondary display) */
@font-face {
  font-family: 'Inter Tight';
  src: url('fonts/InterTight-Regular.ttf') format('truetype');
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Poppins';
  src: url('fonts/Poppins-Regular.ttf') format('truetype');
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Poppins';
  src: url('fonts/Poppins-Light.ttf') format('truetype');
  font-weight: 300; font-style: normal; font-display: swap;
}
/* Google Fonts CDN fallback for weights we don't ship locally */
@import url('https://fonts.googleapis.com/css2?family=Inter+Tight:wght@400;500;600;700&family=Poppins:wght@300;400;500;600;700&display=swap');

:root {
  /* ================================================================
     1 · Ink & Paper  (the primary palette)
     ---------------------------------------------------------------- */
  --ink:            #0B0B0C;    /* true, almost-black — primary text & ink accents */
  --ink-80:         rgba(11,11,12,0.80);
  --ink-60:         rgba(11,11,12,0.60);
  --ink-40:         rgba(11,11,12,0.40);
  --ink-20:         rgba(11,11,12,0.20);
  --ink-08:         rgba(11,11,12,0.08);   /* hairline rule */
  --ink-04:         rgba(11,11,12,0.04);   /* soft fill, row hover */

  --paper:          #FFFFFF;
  --paper-98:       #FAFAFA;    /* canvas */
  --paper-94:       #F0F0F1;    /* subtle surface, inputs */
  --paper-88:       #E1E1E3;    /* chip fills, dividers */

  /* ================================================================
     2 · Brand primitives  (plum authority + lime spark + 2 anchors)
     Not used as page backgrounds. They appear in the orb, in
     categorical indicators, and in reserved hero moments.
     ---------------------------------------------------------------- */
  --brand-plum:     #2A1A2E;   /* obsidian plum — authority, non-blue */
  --brand-lime:     #D8FF3C;   /* halo lime — signature neon spark (CTAs, progress fill) */
  --brand-teal:     #00CED1;
  --brand-cream:    #FFE6D5;

  /* ================================================================
     3 · Semantic domain accents  (editorial palette, swapped in)
     Each health domain owns a hue. Use as dot / ring stroke /
     1px top rule / micro-label color. Not as a tile fill by default.
     These pull from the editorial/moodboard palette — softer,
     more pastel-leaning than the original biomarker spectrum.
     ---------------------------------------------------------------- */
  --cat-activity:    #FFA785;  /* peach   — steps · workouts */
  --cat-sleep:       #A9BBFF;  /* periwinkle — circadian · recovery */
  --cat-body:        #E69BED;  /* orchid — metabolic age */
  --cat-respiratory: #89E3EC;  /* sky    — breath · HRV · O₂ */
  --cat-stress:      #FED5FF;  /* lilac  — spectrum anchor */
  --cat-heart:       #E43D41;  /* crimson — HR · cardiovascular */
  --cat-nutrition:   #74D5B1;  /* mint   — calories · macros */
  --cat-hydration:   #01A0A7;  /* teal   — water · electrolytes */
  --cat-glucose:     #FFC4C5;  /* blush  — CGM · metabolic */
  --cat-cognition:   #6810DD;  /* violet — focus · mindfulness */

  /* Deep stops (paired gradient end for Detail tiles only) */
  --cat-activity-2:    #D96A42;
  --cat-sleep-2:       #5C6FC8;
  --cat-body-2:        #A24FB0;
  --cat-respiratory-2: #2AA9B5;
  --cat-stress-2:      #B47ABE;
  --cat-heart-2:       #8F2424;
  --cat-nutrition-2:   #2E8A66;
  --cat-hydration-2:   #0D4638;
  --cat-glucose-2:     #C96B6D;
  --cat-cognition-2:   #3A0880;

  /* ================================================================
     4 · Named gradients  (reserved library — never invent)
     Hero: Halo Mesh (primary brand mesh — soft, iridescent, signature).
     Rest: atmospheric & smoky — hue bleeds from a corner into near-black,
     evoking the Chloe calories card. Never flat 135° linears.
     ---------------------------------------------------------------- */

  /* PRIMARY — Halo mesh. The signature brand wash for hero light
     surfaces (onboarding, login, reflection, empty states, promos).
     Soft iridescent halo on paper: teal left, lilac-pink right,
     peach top-right, yellow + mint accent specks, white core. */
  --grad-halo-mesh:
    radial-gradient(60% 110% at -8% 50%,  #89E3EC 0%, rgba(137,227,236,0.55) 22%, rgba(137,227,236,0) 55%),
    radial-gradient(45% 95%  at 108% 38%, #FED5FF 0%, rgba(254,213,255,0.45) 25%, rgba(254,213,255,0) 60%),
    radial-gradient(36% 65%  at 88% 10%,  #FFC7A8 0%, rgba(255,199,168,0) 55%),
    radial-gradient(16% 20%  at 20% 80%,  rgba(253,240,178,0.50) 0%, rgba(253,240,178,0) 75%),
    radial-gradient(14% 18%  at 58% 32%,  rgba(198,236,196,0.40) 0%, rgba(198,236,196,0) 75%),
    radial-gradient(70% 85%  at 42% 50%,  rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.30) 45%, rgba(255,255,255,0) 75%),
    linear-gradient(135deg, #FFFFFF 0%, #F6FBFC 100%);

  /* Orb — conic swirl, logo-only (the rotating orb glyph) */
  --grad-orb: conic-gradient(from 180deg at 50% 50%,
    #00CED1 0deg, #C8B6E2 90deg, #FFB6C1 180deg,
    #FFB08A 270deg, #00CED1 360deg);

  /* Ambient · canvases for reflection surfaces */
  --grad-ambient-dk:  radial-gradient(110% 90% at 70% 10%, #3E2544 0%, #1A0F1E 55%, #08050A 100%);
  --grad-ambient-lt:  radial-gradient(120% 100% at 70% 10%, #F0E8F2 0%, #FAFAFA 60%, #FFFFFF 100%);

  /* Detail · smoke — one per biomarker the user named */
  --grad-glucose:     radial-gradient(140% 120% at 10% 95%, #FFC4C5 0%, #6C4A58 35%, #1A1418 75%);
  --grad-heart:       radial-gradient(140% 120% at 15% 90%, #E43D41 0%, #5A1C1E 40%, #140A0C 80%);
  --grad-sleep:       radial-gradient(140% 120% at 15% 95%, #A9BBFF 0%, #3E4A8C 40%, #0E1122 80%);
  --grad-bloodpressure: radial-gradient(140% 120% at 15% 95%, #6810DD 0%, #2A0A58 45%, #0E0818 80%);
  --grad-menstrual:   radial-gradient(140% 120% at 15% 95%, #E69BED 0%, #6B2A78 40%, #180A1E 80%);
  --grad-stress:      linear-gradient(90deg, #A9BBFF 0%, #FED5FF 50%, #FFA785 100%);

  /* ================================================================
     5 · Surface tokens  (Daylight · Light = default)
     Non-gradient-library surface blends: the pulse session canvas
     is a plain radial, not one of the nine named gradients.
     ---------------------------------------------------------------- */
  --surface-pulse:    radial-gradient(120% 100% at 25% 15%, #1E1A22 0%, #0A0A0C 75%);
  --grad-pulse-dk:    var(--surface-pulse);  /* legacy alias */

  --surface-canvas:   var(--paper-98);
  --surface-card:     var(--paper);
  --surface-elevated: var(--paper);
  --surface-border:   var(--ink-08);
  --surface-rule:     var(--ink-08);

  /* Foreground */
  --fg-1:  var(--ink);
  --fg-2:  var(--ink-80);
  --fg-3:  var(--ink-60);
  --fg-4:  var(--ink-40);
  --fg-inv:#FFFFFF;

  /* ================================================================
     6 · Spacing  (4px base)
     ---------------------------------------------------------------- */
  --sp-xs: 4px;  --sp-s: 8px;   --sp-m: 12px;  --sp-l: 16px;
  --sp-xl: 24px; --sp-2xl: 32px;--sp-3xl: 48px;--sp-4xl: 64px;

  /* ================================================================
     7 · Radius
     ---------------------------------------------------------------- */
  --radius-s:    8px;
  --radius-m:   16px;
  --radius-l:   24px;
  --radius-xl:  32px;
  --radius-2xl: 40px;
  --radius-full:999px;

  /* ================================================================
     8 · Elevation  (restrained — hairline + breath)
     ---------------------------------------------------------------- */
  --elev-0: none;
  --elev-1: 0 1px 0 var(--ink-04), 0 2px 8px rgba(11,11,12,0.03);
  --elev-2: 0 8px 28px rgba(11,11,12,0.08);
  --elev-glow: inset 0 0 40px rgba(255,255,255,0.06);

  /* ================================================================
     9 · Motion
     ---------------------------------------------------------------- */
  --ease-in:  cubic-bezier(0.2, 0.8, 0.2, 1);
  --ease-out: cubic-bezier(0.4, 0, 0.6, 1);
  --dur-micro:   200ms;
  --dur-surface: 320ms;
  --dur-ambient: 600ms;

  /* ================================================================
     10 · Type
     ---------------------------------------------------------------- */
  --font-sans: 'Inter Tight', 'SF Pro', -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Poppins', var(--font-sans);   /* optional editorial display */

  --t-display-xl: 500 88px/1.0  var(--font-sans);  /* -0.04em */
  --t-display-l:  500 52px/1.05 var(--font-sans);  /* -0.03em */
  --t-display-m:  500 36px/1.1  var(--font-sans);  /* -0.02em */
  --t-numeric-xl: 400 72px/1.0  var(--font-sans);  /* -0.03em */
  --t-numeric-l:  400 44px/1.05 var(--font-sans);  /* -0.02em */
  --t-numeric-m:  400 30px/1.1  var(--font-sans);  /* -0.01em */
  --t-heading-m:  600 20px/1.2  var(--font-sans);  /* -0.01em */
  --t-body-l:     400 17px/1.5  var(--font-sans);
  --t-body-m:     400 15px/1.5  var(--font-sans);
  --t-caption:    500 13px/1.3  var(--font-sans);  /* +0.02em */
  --t-micro:      600 11px/1.3  var(--font-sans);  /* +0.06em uppercase */
}

/* ---------- Dark-mode override (Daylight dark, Pulse, Detail, Ambient) */
[data-surface="daylight"][data-mode="dark"],
:root[data-mode="dark"] {
  --surface-canvas:   #0A0B0E;
  --surface-card:     #141518;
  --surface-elevated: #1C1E22;
  --surface-border:   rgba(255,255,255,0.07);
  --surface-rule:     rgba(255,255,255,0.07);
  --fg-1:  #FFFFFF;
  --fg-2:  rgba(255,255,255,0.78);
  --fg-3:  rgba(255,255,255,0.56);
  --fg-4:  rgba(255,255,255,0.36);
  --fg-inv:#0B0B0C;
  --elev-1: 0 1px 0 rgba(255,255,255,0.04);
  --elev-2: 0 8px 28px rgba(0,0,0,0.5);
}

/* ============================================================
   Element defaults
   ============================================================ */
html, body {
  font-family: var(--font-sans);
  color: var(--fg-1);
  background: var(--surface-canvas);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1 { font: var(--t-display-l); letter-spacing: -0.03em; margin: 0; }
h2 { font: var(--t-display-m); letter-spacing: -0.02em; margin: 0; }
h3 { font: var(--t-heading-m); letter-spacing: -0.01em; margin: 0; }
p  { font: var(--t-body-l); margin: 0; color: var(--fg-2); }
small, .caption { font: var(--t-caption); letter-spacing: 0.02em; color: var(--fg-3); }
.micro {
  font: var(--t-micro);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-3);
}

/* Numeric / unit house rule */
.metric { display: inline-flex; align-items: baseline; gap: 6px; }
.metric .value { font: var(--t-numeric-l); letter-spacing: -0.02em; color: var(--fg-1); }
.metric .unit  { font: var(--t-caption); letter-spacing: 0.02em; color: var(--fg-3); }

/* Tap target min */
button, .btn { min-height: 44px; border: 0; cursor: pointer; font-family: inherit; }

/* ============================================================
   Card primitives — one per surface
   Baseline is ink-on-paper. Domain color appears only as an
   optional 2px top rule (--cat-rule) or a 6px corner dot.
   ============================================================ */
.card-daylight {
  background: var(--surface-card);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-l);
  box-shadow: var(--elev-1);
  padding: var(--sp-xl);
  position: relative;
}
.card-daylight[data-cat]::before {
  content:'';
  position:absolute; top:0; left:var(--sp-xl); right:var(--sp-xl); height:2px;
  background: var(--cat-rule, var(--ink));
  border-radius: 2px;
}

.card-pulse {
  background: var(--grad-pulse-dk);
  border-radius: var(--radius-xl);
  box-shadow: var(--elev-glow);
  padding: var(--sp-xl);
  color: #FFFFFF;
  position: relative;
  overflow: hidden;
}
.card-pulse::before {
  content:''; position:absolute; inset:0;
  background: radial-gradient(60% 40% at 15% 10%, rgba(255,255,255,0.08), transparent 70%);
  pointer-events:none;
}

.card-detail {
  border-radius: var(--radius-2xl);
  padding: var(--sp-xl);
  color:#FFFFFF; border:0; overflow:hidden; position:relative;
}

.card-ambient {
  background: rgba(255,255,255,0.04);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-l);
  padding: var(--sp-xl);
  color:#FFFFFF;
}

/* ============================================================
   Buttons — ink primary, hairline secondary, ghost
   ============================================================ */
.btn-primary {
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius-full);
  padding: 12px 24px;
  font: 600 17px/1 var(--font-sans);
  transition: transform var(--dur-micro) var(--ease-in), opacity var(--dur-micro) var(--ease-in);
}
.btn-primary:hover  { opacity: 0.88; }
.btn-primary:active { transform: scale(0.98); }

.btn-secondary {
  background: transparent;
  color: var(--fg-1);
  border: 1px solid var(--ink-20);
  border-radius: var(--radius-full);
  padding: 11px 22px;
  font: 600 17px/1 var(--font-sans);
}
.btn-secondary:hover { border-color: var(--ink); }

.btn-ghost {
  background: transparent;
  color: var(--fg-1);
  padding: 10px 16px;
  font: 500 15px/1 var(--font-sans);
}
.btn-ghost:hover { text-decoration: underline; }

/* Pulse/Detail in-session CTA — inherits domain, not brand */
.btn-session {
  background: var(--cat-accent, var(--brand-teal));
  color: #0A0B0E;
  border-radius: var(--radius-full);
  padding: 12px 24px 12px 26px;
  font: 600 17px/1 var(--font-sans);
  display: inline-flex; align-items: center; gap: 10px;
}
.btn-session::after {
  content:''; width:26px; height:26px; border-radius:50%;
  background:#0A0B0E;
  -webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path fill='black' d='M8 5v14l11-7z'/></svg>") center/14px no-repeat;
          mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path fill='black' d='M8 5v14l11-7z'/></svg>") center/14px no-repeat;
  background-color:#0A0B0E;
}