/* ===========================================================================
   CANDLE कथा — design tokens
   The single source of truth for colour, type, space, depth and motion.
   Loaded before app.css and admin.css so both panels share one system.

   Everything is self-hosted: no CDN, no build step, no external request.
   =========================================================================== */

/* ------------------------------------------------------------------ type --
   Two variable fonts, subset to latin, served from our own /assets/fonts.
   Devanagari (कथा) falls through to the system stack, which every modern
   phone and desktop covers — bundling a Devanagari face would add ~200 KB.
   font-display:swap so text paints immediately on a slow Nepali connection. */

@font-face {
  font-family: 'Inter';
  src: url('../fonts/inter-var.woff2') format('woff2-variations'),
       url('../fonts/inter-var.woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Playfair Display';
  src: url('../fonts/playfair-var.woff2') format('woff2-variations'),
       url('../fonts/playfair-var.woff2') format('woff2');
  font-weight: 400 900;
  font-style: normal;
  font-display: swap;
}

:root {
  /* --- brand ------------------------------------------------------------ */
  --navy:        #16323F;
  --navy-deep:   #0E232D;
  --navy-soft:   #1E4152;
  --gold:        #D9A93A;
  --gold-soft:   #EFD9A0;
  --cream:       #FBF7EF;
  --ink:         #1E2A2E;

  /* Brand gold only reaches ~1.9:1 on cream, so it can never carry text on a
     light background. This deeper gold hits WCAG AA and is what gold-coloured
     text, small icons and pill labels use on light surfaces. --gold stays for
     fills, rules and anything sitting on navy. */
  --gold-ink:    #7D5A1B;
  --gold-wash:   #F5E9CF;

  /* --- surfaces --------------------------------------------------------- */
  --bg:          #F7F3EA;
  --surface:     #FFFFFF;
  --surface-2:   #FBF7EF;
  --surface-3:   #F1EADC;
  --line:        #E7DFCE;
  --line-strong: #D6CBB4;

  /* --- text ------------------------------------------------------------- */
  --text:        #1E2A2E;
  --text-muted:  #5F7078;
  --text-soft:   #8A97A0;
  --text-on-dark:#FBF7EF;

  /* --- status ----------------------------------------------------------- */
  --ok:          #2F6B45;
  --ok-bg:       #E6F0E9;
  --warn:        #7D5A1B;
  --warn-bg:     #FBF0D8;
  --danger:      #A6342B;
  --danger-bg:   #FBE9E6;
  --info:        #1F5673;
  --info-bg:     #E4EFF4;

  /* --- typography ------------------------------------------------------- */
  --font-display: 'Playfair Display', 'Iowan Old Style', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
  --font-mono: ui-monospace, 'SF Mono', 'Cascadia Mono', Menlo, Consolas, monospace;

  /* A fifth-based type scale. Body stays 16px so mobile Safari never zooms. */
  --t-xs:   0.6875rem;  /* 11px — labels, meta */
  --t-sm:   0.8125rem;  /* 13px — secondary */
  --t-base: 1rem;       /* 16px — body */
  --t-md:   1.125rem;   /* 18px */
  --t-lg:   1.375rem;   /* 22px */
  --t-xl:   1.75rem;    /* 28px */
  --t-2xl:  2.25rem;    /* 36px */
  --t-3xl:  3rem;       /* 48px — the stamp count */

  --lh-tight: 1.15;
  --lh-snug:  1.35;
  --lh-body:  1.55;

  --track-tight: -0.02em;
  --track-wide:   0.08em;

  /* --- space (4px base) -------------------------------------------------- */
  --s-1:  0.25rem;
  --s-2:  0.5rem;
  --s-3:  0.75rem;
  --s-4:  1rem;
  --s-5:  1.25rem;
  --s-6:  1.5rem;
  --s-8:  2rem;
  --s-10: 2.5rem;
  --s-12: 3rem;
  --s-16: 4rem;

  /* --- radius ----------------------------------------------------------- */
  --r-sm:   8px;
  --r-md:   12px;
  --r-lg:   18px;
  --r-xl:   24px;
  --r-2xl:  32px;
  --r-full: 999px;

  /* --- depth ------------------------------------------------------------
     Warm-tinted shadows: a neutral grey shadow on a cream page reads dirty. */
  --shadow-xs: 0 1px 2px rgba(30, 42, 46, 0.06);
  --shadow-sm: 0 2px 8px rgba(30, 42, 46, 0.07);
  --shadow-md: 0 6px 20px rgba(30, 42, 46, 0.09);
  --shadow-lg: 0 16px 40px rgba(30, 42, 46, 0.13);
  --shadow-gold: 0 8px 28px rgba(217, 169, 58, 0.32);
  --shadow-inset: inset 0 1px 0 rgba(255, 255, 255, 0.45);

  /* --- motion -----------------------------------------------------------
     Expo-out: fast start, long soft settle. Reads as "considered". */
  --ease:      cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out:  cubic-bezier(0.33, 1, 0.68, 1);
  --ease-in:   cubic-bezier(0.32, 0, 0.67, 0);
  --ease-back: cubic-bezier(0.34, 1.56, 0.64, 1);

  --dur-fast: 140ms;
  --dur:      240ms;
  --dur-slow: 420ms;

  /* --- layout ----------------------------------------------------------- */
  --app-max: 480px;
  --admin-max: 1240px;

  /* Respect notches and the iOS home indicator. */
  --safe-top:    env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);

  /* --- signature gradients ---------------------------------------------- */
  --grad-navy: linear-gradient(155deg, #1E4152 0%, #16323F 45%, #0E232D 100%);
  --grad-gold: linear-gradient(135deg, #EFD9A0 0%, #D9A93A 55%, #BE8C22 100%);
  --grad-sheen: linear-gradient(115deg,
      rgba(255,255,255,0) 25%,
      rgba(255,255,255,0.22) 48%,
      rgba(255,255,255,0) 68%);
}

/* --------------------------------------------------------------- base ---- */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--t-base);
  line-height: var(--lh-body);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'cv02','cv03','cv04','ss01';
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: var(--lh-tight);
  letter-spacing: var(--track-tight);
  margin: 0;
}

/* Numbers that change (stamp counts, totals, PINs) must not reflow as they
   tick, so every numeric display is tabular. */
.num, .tabular { font-variant-numeric: tabular-nums; }

/* ------------------------------------------------------------- a11y ------ */
:where(a, button, input, select, textarea, [tabindex]):focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
  border-radius: var(--r-sm);
}

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* --------------------------------------------------------------- icons --- */
/* Inline stroke icons from the sprite. Sized in em so they scale with text. */
.icon {
  width: 1.25em;
  height: 1.25em;
  flex: none;
  display: inline-block;
  vertical-align: -0.2em;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.icon-sm { width: 1em;    height: 1em; }
.icon-lg { width: 1.75em; height: 1.75em; }
.icon-xl { width: 2.5em;  height: 2.5em; }
.icon-fill { fill: currentColor; stroke: none; }

/* ------------------------------------------------------------- motion ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}