/* BUILT52 design tokens — dark-first premium red/black identity.
   Brand red and success are identical across themes; everything else swaps. */

:root {
  --brand-red: #E5232F;
  --brand-red-dark: #FF4A54;
  --brand-red-soft: rgba(229, 35, 47, 0.14);
  --brand-red-text: #FF6B72;

  --bg: #0B0B0D;
  --bg-elevated: #141418;
  --bg-subtle: #101014;
  --surface-card: #141418;
  --surface-raised: #1C1C22;
  --border: rgba(255, 255, 255, 0.07);
  --border-strong: rgba(255, 255, 255, 0.10);

  --text-primary: #F2F2F5;
  --text-secondary: #9A9AA4;
  --text-muted: #6C6C77;
  --text-on-brand: #FFFFFF;

  --success: #4ADE80;
  --warning: #E0A828;
  --danger: var(--brand-red);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.55);
  --shadow-cta: 0 12px 28px -10px rgba(229, 35, 47, 0.7);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 999px;

  --font-heading: 'Archivo', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-sans: var(--font-body);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #FAFAFA;
    --bg-elevated: #FFFFFF;
    --bg-subtle: #F1F1F4;
    --surface-card: #FFFFFF;
    --surface-raised: #F1F1F4;
    --border: #E4E4E9;
    --border-strong: #D8D8DE;

    --text-primary: #16161A;
    --text-secondary: #5C5C66;
    --text-muted: #8A8A93;
    --text-on-brand: #FFFFFF;
    --brand-red-text: #B80E26;

    --shadow-sm: 0 1px 2px rgba(20, 20, 24, 0.06);
    --shadow-md: 0 6px 20px rgba(20, 20, 24, 0.08);
    --shadow-lg: 0 16px 40px rgba(20, 20, 24, 0.14);
  }
}

:root[data-theme="light"] {
  --bg: #FAFAFA;
  --bg-elevated: #FFFFFF;
  --bg-subtle: #F1F1F4;
  --surface-card: #FFFFFF;
  --surface-raised: #F1F1F4;
  --border: #E4E4E9;
  --border-strong: #D8D8DE;

  --text-primary: #16161A;
  --text-secondary: #5C5C66;
  --text-muted: #8A8A93;
  --text-on-brand: #FFFFFF;
  --brand-red-text: #B80E26;

  --shadow-sm: 0 1px 2px rgba(20, 20, 24, 0.06);
  --shadow-md: 0 6px 20px rgba(20, 20, 24, 0.08);
  --shadow-lg: 0 16px 40px rgba(20, 20, 24, 0.14);
}

:root[data-theme="dark"] {
  --bg: #0B0B0D;
  --bg-elevated: #141418;
  --bg-subtle: #101014;
  --surface-card: #141418;
  --surface-raised: #1C1C22;
  --border: rgba(255, 255, 255, 0.07);
  --border-strong: rgba(255, 255, 255, 0.10);

  --text-primary: #F2F2F5;
  --text-secondary: #9A9AA4;
  --text-muted: #6C6C77;
  --text-on-brand: #FFFFFF;
  --brand-red-text: #FF6B72;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.55);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 {
  margin: 0 0 0.5em;
  font-family: var(--font-heading);
  font-weight: 800;
  letter-spacing: -0.02em;
}
p { margin: 0 0 1em; color: var(--text-secondary); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 20px; }

.card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 20px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: var(--radius-full);
  padding: 12px 22px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  min-height: 44px;
  transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--brand-red); color: var(--text-on-brand); box-shadow: var(--shadow-cta); }
.btn-primary:hover { background: var(--brand-red-dark); }
.btn-secondary { background: var(--surface-raised); color: var(--text-primary); border: 1px solid var(--border-strong); }
.btn-ghost { background: transparent; color: var(--text-primary); border: 1px solid var(--border); }
.btn-block { width: 100%; }
.btn-sm { padding: 8px 16px; min-height: 36px; font-size: 12px; }
.btn-danger { background: var(--danger); color: #fff; }

.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 10px; border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-size: 10px; font-weight: 800; text-transform: uppercase; letter-spacing: 0.1em;
  background: var(--surface-raised); color: var(--text-secondary); border: 1px solid var(--border-strong);
}
.badge-red { background: var(--brand-red-soft); color: var(--brand-red-text); border-color: transparent; }
.badge-success { background: rgba(74,222,128,0.12); color: var(--success); border-color: transparent; }
.badge-warning { background: rgba(224,168,40,0.12); color: var(--warning); border-color: transparent; }

label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--text-secondary); }
input, select, textarea {
  width: 100%; padding: 12px 14px; border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong); background: var(--bg-subtle); color: var(--text-primary);
  font-size: 15px; font-family: inherit; min-height: 44px;
}
textarea { min-height: 88px; }
input:focus, select:focus, textarea:focus, button:focus-visible, a:focus-visible {
  outline: 2px solid var(--brand-red); outline-offset: 2px;
}
.field { margin-bottom: 16px; }
.help-text { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.form-error { color: var(--danger); font-size: 13px; margin-top: 4px; }

.progress-bar { height: 6px; border-radius: var(--radius-full); background: rgba(255,255,255,.08); overflow: hidden; }
:root[data-theme="light"] .progress-bar { background: rgba(20,20,24,.08); }
@media (prefers-color-scheme: light) { :root:not([data-theme="dark"]) .progress-bar { background: rgba(20,20,24,.08); } }
.progress-bar > span { display: block; height: 100%; background: var(--brand-red); border-radius: var(--radius-full); }

.flash { padding: 12px 16px; border-radius: var(--radius-md); margin-bottom: 16px; font-size: 14px; font-weight: 600; }
.flash-success { background: rgba(74,222,128,0.12); color: var(--success); }
.flash-error { background: var(--brand-red-soft); color: var(--brand-red-text); }

.empty-state { text-align: center; padding: 40px 20px; color: var(--text-muted); }

.theme-picker { display: flex; gap: 6px; background: var(--surface-raised); border-radius: var(--radius-full); padding: 4px; }
.theme-picker button {
  border: none; background: transparent; padding: 8px 14px; border-radius: var(--radius-full);
  font-family: var(--font-heading);
  font-size: 11px; font-weight: 800; letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--text-secondary); cursor: pointer;
}
.theme-picker button.active { background: var(--brand-red); color: #fff; }

::selection { background: var(--brand-red-soft); }

/* Reusable: circular stat ring (calorie/macro rings on Today/Nutrition screens) */
.ring-stat { position: relative; flex: none; display: inline-flex; align-items: center; justify-content: center; }
.ring-stat svg { display: block; }
.ring-stat .ring-track { fill: none; stroke: rgba(255,255,255,.08); }
@media (prefers-color-scheme: light) { :root:not([data-theme="dark"]) .ring-stat .ring-track { stroke: rgba(20,20,24,.08); } }
:root[data-theme="light"] .ring-stat .ring-track { stroke: rgba(20,20,24,.08); }
.ring-stat .ring-fill { fill: none; stroke: var(--brand-red); stroke-linecap: round; transition: stroke-dashoffset .3s ease; }
.ring-stat .ring-center { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; }
.ring-stat .ring-value { font-family: var(--font-heading); font-weight: 900; font-size: 22px; letter-spacing: -0.02em; color: var(--text-primary); line-height: 1; }
.ring-stat .ring-label { font-family: var(--font-heading); font-weight: 700; font-size: 10px; letter-spacing: 0.08em; color: var(--text-muted); margin-top: 3px; text-transform: uppercase; }

/* Reusable: macro/target bar (label + fraction + thin fill bar) */
.macro-bar { padding: 13px 12px; border-radius: var(--radius-md); background: var(--surface-card); border: 1px solid var(--border); }
.macro-bar .macro-bar-label { font-family: var(--font-heading); font-size: 10px; font-weight: 700; letter-spacing: 0.1em; color: var(--text-muted); text-transform: uppercase; }
.macro-bar .macro-bar-value { font-family: var(--font-heading); font-size: 18px; font-weight: 800; letter-spacing: -0.02em; margin: 6px 0 8px; color: var(--text-primary); }
.macro-bar .macro-bar-value small { font-size: 11px; font-weight: 600; color: var(--text-muted); }
.macro-bar .progress-bar { height: 4px; }

@media (max-width: 640px) {
  .container { padding: 0 16px; }
}