/* ============================================================
   BASE.CSS — PSG Commercial Divers Expense Tracker
   Custom properties, reset, typography
   ============================================================ */

/* ── Custom Properties ─────────────────────────────────────── */
:root {
  /* Color — Background */
  --c-black:   #060E18;
  --c-navy:    #081628;
  --c-navy2:   #0C1E38;
  --c-navy3:   #112548;
  --c-navy4:   #172E58;
  --c-card:    #0F1F38;
  --c-card2:   #152540;
  --c-card3:   #1B2D4E;

  /* Color — Gold */
  --c-gold:     #C9A84C;
  --c-gold2:    #D9BC72;
  --c-gold3:    #EDD490;
  --c-gold-dim: #7A6028;

  /* Color — Text */
  --c-text:   #E8EEF8;
  --c-text2:  #B0C0D8;
  --c-muted:  #607898;
  --c-dim:    #384E68;

  /* Color — Border */
  --c-border:  rgba(201, 168, 76, 0.14);
  --c-border2: rgba(201, 168, 76, 0.30);

  /* Color — Semantic */
  --c-green:    #27A864;
  --c-green2:   #1E8050;
  --c-red:      #C44040;
  --c-amber:    #C48020;
  --c-blue:     #2E72B8;
  --c-purple:   #8060A0;

  /* Typography */
  --font-display: 'Barlow Condensed', sans-serif;
  --font-body:    'Barlow', sans-serif;

  /* Spacing */
  --sp-xs:  4px;
  --sp-sm:  8px;
  --sp-md:  12px;
  --sp-lg:  16px;
  --sp-xl:  24px;

  /* Radius */
  --r-sm:  6px;
  --r-md:  9px;
  --r-lg:  12px;

  /* Transitions */
  --t-fast: 0.12s ease;
}

/* ── Reset ─────────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html,
body {
  height: 100%;
  overflow: hidden;
  background: var(--c-black);
}

body {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--c-text);
  max-width: 430px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  position: relative;
}

/* ── Background grid texture ───────────────────────────────── */
body::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 39px,
    rgba(201, 168, 76, 0.015) 39px,
    rgba(201, 168, 76, 0.015) 40px
  );
  pointer-events: none;
  z-index: 0;
}

/* ── Typography ────────────────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--c-text);
}

/* ── Accessibility ─────────────────────────────────────────── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

:focus-visible {
  outline: 2px solid var(--c-gold);
  outline-offset: 2px;
}