:root {
  color-scheme: dark;
  --bg: #0b0b14;
  --sidebar-bg: #100f1a;
  --surface: #171626;
  --surface-2: #211f34;
  --border: #2a2840;
  --text: #f2f1f7;
  --text-dim: #a3a0bd;
  --text-dimmer: #706c8f;
  --accent: #7c5cff;
  --accent-2: #9b7cff;
  --accent-text: #ffffff;
  --calories: #f97316;
  --protein: #4ade80;
  --carbs: #38bdf8;
  --fat: #fbbf24;
  --error: #f87171;
  --warning: #fbbf24;
  --success: #4ade80;
  --radius-lg: 1rem;
  --radius-md: 0.75rem;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  -webkit-tap-highlight-color: transparent;
}

body {
  padding-top: env(safe-area-inset-top);
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

a { color: inherit; }
svg { display: block; }

/* ============ auth pages (no shell) ============ */
.auth-main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}
.auth-main .card { width: 100%; max-width: 22rem; }

/* ============ app shell ============ */
.app-shell {
  flex: 1;
  display: flex;
  align-items: stretch;
  min-height: 100%;
}

.sidebar {
  display: none;
  flex-direction: column;
  width: 15.5rem;
  flex-shrink: 0;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  padding: 1.25rem 1rem;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 30;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-weight: 700;
  font-size: 1.0625rem;
  text-decoration: none;
  padding: 0.25rem 0.5rem 1.5rem;
}
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 0.625rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  font-size: 1rem;
}

.sidebar-nav { display: flex; flex-direction: column; gap: 0.25rem; }
.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 0.75rem;
  border-radius: var(--radius-md);
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
}
.sidebar-nav a:hover { background: var(--surface); color: var(--text); }
.sidebar-nav a.active { background: var(--surface); color: var(--text); box-shadow: inset 3px 0 0 var(--accent); }
.sidebar-nav a svg { color: inherit; flex-shrink: 0; }

.sidebar-bottom { margin-top: auto; display: flex; flex-direction: column; gap: 0.75rem; }

.sidebar-streak {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.875rem;
  background: var(--surface);
}
.streak-flame { color: var(--calories); display: inline-flex; }
.streak-days { font-size: 1.375rem; font-weight: 700; line-height: 1.2; }
.streak-bar-track {
  height: 0.375rem;
  border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden;
  margin-top: 0.5rem;
}
.streak-bar-fill { height: 100%; background: linear-gradient(90deg, var(--accent), var(--calories)); }

.sidebar-logout button {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  background: transparent;
  border: none;
  color: var(--text-dimmer);
  font-size: 0.875rem;
  padding: 0.5rem 0.75rem;
  cursor: pointer;
}
.sidebar-logout button:hover { color: var(--error); }

.app-body { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.app-main {
  flex: 1;
  width: 100%;
  max-width: 72rem;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 5.5rem;
}

/* ============ topbar ============ */
.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.topbar h1 { font-size: 1.5rem; margin: 0; }
.topbar-actions { display: flex; align-items: center; gap: 0.75rem; flex-shrink: 0; }
.avatar {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8125rem;
  flex-shrink: 0;
}

h1 { font-size: 1.25rem; font-weight: 700; margin: 0 0 1rem; letter-spacing: -0.01em; }
h2 { font-size: 0.9375rem; font-weight: 600; color: var(--text); margin: 0 0 0.75rem; }

.badge-admin {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 999px;
  padding: 0.125rem 0.5rem;
  margin-left: 0.5rem;
  vertical-align: middle;
}

/* ============ cards / panels ============ */
.card, section.card {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 1rem;
  margin-bottom: 1rem;
}
.panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.75rem; }
.panel-head h2 { margin: 0; }
.panel-link { font-size: 0.8125rem; color: var(--accent-2); text-decoration: none; font-weight: 500; }

.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  align-items: start;
}
@media (min-width: 720px) {
  .dashboard-grid { grid-template-columns: 1.4fr 1fr; }
}
.dashboard-grid > div { display: flex; flex-direction: column; gap: 1rem; }
.dashboard-grid .card { margin-bottom: 0; }

/* ============ stat cards ============ */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-bottom: 1rem;
}
@media (min-width: 640px) {
  .stat-grid { grid-template-columns: repeat(4, 1fr); }
}
.stat-card {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 0.875rem;
}
.stat-card-head { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.5rem; font-size: 0.8125rem; color: var(--text-dim); }
.stat-icon {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9375rem;
  flex-shrink: 0;
}
.stat-value { font-size: 1.375rem; font-weight: 700; }
.stat-target { font-size: 0.8125rem; color: var(--text-dimmer); font-weight: 500; }
.stat-bar-track { height: 0.375rem; border-radius: 999px; background: var(--surface-2); overflow: hidden; margin-top: 0.5rem; }
.stat-bar-fill { height: 100%; border-radius: 999px; }

/* ============ generic macro bar (reused in Macros card) ============ */
.macro-bar-track {
  height: 0.375rem;
  border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden;
  margin-top: 0.25rem;
}
.macro-bar-fill { height: 100%; background: var(--accent); border-radius: 999px; }

/* ============ donut / line charts ============ */
.donut-wrap { display: flex; align-items: center; gap: 1.25rem; flex-wrap: wrap; }
.donut-top { fill: var(--text); font-size: 1.375rem; font-weight: 700; font-family: inherit; }
.donut-bottom { fill: var(--text-dimmer); font-size: 0.6875rem; font-family: inherit; }
.legend { display: flex; flex-direction: column; gap: 0.5rem; flex: 1; min-width: 8rem; }
.legend-row { display: flex; align-items: center; gap: 0.5rem; font-size: 0.8125rem; }
.legend-dot { width: 0.5rem; height: 0.5rem; border-radius: 999px; flex-shrink: 0; }
.legend-row .legend-label { flex: 1; color: var(--text-dim); }
.legend-row .legend-value { color: var(--text); font-weight: 600; }

.linechart-day { fill: var(--text-dimmer); font-size: 10px; font-family: inherit; }
.linechart-label { fill: var(--text); font-size: 11px; font-weight: 700; font-family: inherit; }

/* ============ exercise / meal rows ============ */
.row-list { display: flex; flex-direction: column; }
.icon-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 0;
  border-bottom: 1px solid var(--border);
}
.icon-row:last-of-type { border-bottom: none; }
.icon-circle {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.75rem;
  background: var(--surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  flex-shrink: 0;
}
.icon-row-body { flex: 1; min-width: 0; }
.icon-row-title { font-size: 0.875rem; font-weight: 500; }
.icon-row-sub { font-size: 0.8125rem; color: var(--text-dimmer); }
.icon-row-end { flex-shrink: 0; text-align: right; font-size: 0.875rem; font-weight: 600; }

.check-dot {
  width: 1.375rem;
  height: 1.375rem;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1.5px solid var(--border);
  color: transparent;
}
.check-dot.done { background: var(--success); border-color: var(--success); color: #0b0b14; }

/* ============ forms ============ */
label { display: block; font-size: 0.875rem; margin-bottom: 0.75rem; }
label > span { display: block; margin-bottom: 0.25rem; color: var(--text-dim); }

.checkbox-label { display: flex; align-items: center; gap: 0.5rem; cursor: pointer; }
.checkbox-label input[type="checkbox"] { width: auto; flex-shrink: 0; }
.checkbox-label > span { margin-bottom: 0; color: var(--text); }

input, select, textarea {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.5rem 0.75rem;
  color: var(--text);
  font-size: 1rem;
  font-family: inherit;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.25); }

button, .btn {
  display: inline-block;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.5rem 0.875rem;
  font-size: 0.875rem;
  font-weight: 500;
  background: var(--surface-2);
  color: var(--text);
  cursor: pointer;
  text-align: center;
  text-decoration: none;
}
button:disabled { opacity: 0.6; cursor: default; }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: var(--accent-text);
  border-color: transparent;
  width: 100%;
  font-weight: 600;
}

.btn-block { width: 100%; }
.btn-danger:hover { color: var(--error); border-color: var(--error); }

.weekday-picker { display: flex; gap: 0.375rem; flex-wrap: wrap; margin-bottom: 0.75rem; }
.weekday-picker label {
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  font-size: 0.8125rem;
  cursor: pointer;
}
.weekday-picker input { display: none; }
.weekday-picker label:has(input:checked) { background: var(--accent); border-color: var(--accent); color: #fff; }

.row { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; }
.row-gap { display: flex; gap: 0.5rem; }
.muted { color: var(--text-dim); }
.dim { color: var(--text-dimmer); }
.small { font-size: 0.8125rem; }
.error { color: var(--error); font-size: 0.875rem; }
.success { color: var(--success); font-size: 0.875rem; }

.suggestion-box {
  background: rgba(124, 92, 255, 0.08);
  border: 1px solid var(--accent);
  border-radius: var(--radius-md);
  padding: 0.875rem;
  margin: 0;
}
.suggestion-numbers { margin: 0 0 0.75rem; font-size: 1.0625rem; font-weight: 700; }

/* ============ paired-field layout (settings-style forms) ============ */
.field-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0 1rem;
}
.field-grid-4 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 0.75rem;
}
@media (min-width: 480px) {
  .field-grid { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 640px) {
  .field-grid-4 { grid-template-columns: repeat(4, 1fr); }
}

ul.list { list-style: none; margin: 0; padding: 0; }
ul.list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
}
ul.list li:last-child { border-bottom: none; }

.tabs { display: flex; gap: 0.5rem; margin-bottom: 0.75rem; }
.tabs button { font-size: 0.8125rem; border-radius: 999px; }
.tabs button.active { background: var(--accent); color: #fff; border-color: var(--accent); }

.nutrition-logger { margin-top: 0.75rem; }
.nutrition-logger .search-results:not(:empty) { margin-top: 0.5rem; }

video#scanner-video { width: 100%; border-radius: var(--radius-md); background: #000; }

.install-banner {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: 0.75rem 1rem;
  padding-bottom: calc(0.75rem + env(safe-area-inset-bottom));
  font-size: 0.875rem;
  z-index: 50;
}

/* ============ bottom nav (mobile) ============ */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  border-top: 1px solid var(--border);
  background: rgba(11, 11, 20, 0.95);
  backdrop-filter: blur(8px);
  padding-bottom: env(safe-area-inset-bottom);
  z-index: 40;
}
.bottom-nav a {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.1875rem;
  text-align: center;
  padding: 0.5rem 0.25rem;
  font-size: 0.6875rem;
  color: var(--text-dimmer);
  text-decoration: none;
}
.bottom-nav a svg { margin: 0 auto; }
.bottom-nav a.active { color: var(--accent-2); }

/* ============ responsive: sidebar takes over from bottom-nav ============ */
@media (min-width: 960px) {
  .sidebar { display: flex; }
  .app-body { margin-left: 15.5rem; }
  .bottom-nav { display: none; }
  .app-main { padding-bottom: 2rem; }
}