/* ============================================================================
 * Plate Notify (formerlly Brake Check, changed 21 Aug 2026) — Theme
 * ----------------------------------------------------------------------------
 * Colour palette, typography, and global resets.
 * Palette is locked per design — do not alter without product approval.
 * ==========================================================================*/

:root {
  /* ---- Colour palette (from original prototype) ---- */
  --bg:            #1C1C1E;
  --bg-elevated:   #2C2C2E;
  --bg-input:      #3A3A3C;
  --border:        #48484A;
  --text:          #FFFFFF;
  --text-muted:    #8E8E93;
  --text-dim:      #636366;

  --accent:        #00D4FF;
  --accent-dim:    #0099BB;
  --danger:        #FF453A;
  --danger-dim:    #B8302A;
  --success:       #30D158;
  --success-dim:   #1E8A3A;
  --warning:       #FF9F0A;

  /* ---- Typography ---- */
  --font-stack: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text',
                'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono:  'SF Mono', Menlo, Monaco, Consolas, monospace;

  /* ---- Spacing scale ---- */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 24px;
  --sp-6: 32px;
  --sp-7: 48px;
  --sp-8: 64px;

  /* ---- Radii ---- */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 24px;
  --r-pill: 999px;

  /* ---- Elevation ---- */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.4);

  /* ---- Motion ---- */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --t-fast: 150ms;
  --t-med:  250ms;

  /* ---- Safe area insets (notch / home indicator) ---- */
  --safe-top:    env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left:   env(safe-area-inset-left, 0px);
  --safe-right:  env(safe-area-inset-right, 0px);
}

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

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
}

button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, select, textarea { font: inherit; color: inherit; }
a { color: var(--accent); text-decoration: none; }

.hidden { display: none !important; }
.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;
}

/* ---- App container ---- */
.app {
  min-height: 100vh;
  padding-top: var(--safe-top);
  padding-bottom: var(--safe-bottom);
  padding-left: var(--safe-left);
  padding-right: var(--safe-right);
  display: flex;
  flex-direction: column;
}

/* ---- Dev banner ---- */
.dev-banner {
  position: fixed;
  top: 0; left: 0; right: 0;
  padding: calc(var(--safe-top) + 4px) var(--sp-3) 4px;
  font-size: 11px;
  font-family: var(--font-mono);
  text-align: center;
  z-index: 1000;
  letter-spacing: 0.5px;
}
.dev-banner.mock     { background: var(--warning); color: #000; }
.dev-banner.live     { background: var(--success); color: #000; }
.dev-banner.staging  { background: var(--accent);  color: #000; }
.dev-banner.production { display: none; }

body.has-dev-banner .app { padding-top: calc(var(--safe-top) + 28px); }