/* QB Performance — Modern Dashboard */

/* ── Tokens ──────────────────────────────────────────────── */
:root {
  --bg:         #e3e6ed;
  --surface:    #ffffff;
  --surface2:   #f8f9fc;
  --surface3:   #eef0f4;
  --border:     #e2e8f0;
  --border-mid: #cbd5e1;
  --accent:     #f28a28;
  --accent-lt:  rgba(242,138,40,0.10);
  --danger:     #dc2626;
  --warn:       #d97706;
  --info:       #2563eb;
  --purple:     #7c3aed;
  --text:       #1e293b;
  --text-muted: #4b5563;
  --text-dim:   #6b7280;
  --radius:     10px;
  --radius-sm:  8px;
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.06), 0 2px 8px rgba(0,0,0,0.04);
  --shadow:     0 2px 8px rgba(0,0,0,0.06), 0 8px 24px rgba(0,0,0,0.05);
}

/* ── Dark theme ──────────────────────────────────────────── */
[data-theme="dark"] {
  --bg:         #111318;
  --surface:    #1c1f2a;
  --surface2:   #22263a;
  --surface3:   #282d40;
  --border:     #2e3347;
  --border-mid: #3d4460;
  --text:       #e8ecf3;
  --text-muted: #9aa3b8;
  --text-dim:   #6b7490;
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.30), 0 2px 8px rgba(0,0,0,0.20);
  --shadow:     0 2px 8px rgba(0,0,0,0.30), 0 8px 24px rgba(0,0,0,0.25);
  color-scheme: dark;
}

/* ── Midnight theme ──────────────────────────────────────── */
[data-theme="midnight"] {
  --bg:         #080c14;
  --surface:    #0f1623;
  --surface2:   #131d2e;
  --surface3:   #182338;
  --border:     #1e2d44;
  --border-mid: #2a3d5c;
  --text:       #dce6f8;
  --text-muted: #8899bb;
  --text-dim:   #576080;
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.40), 0 2px 8px rgba(0,0,0,0.30);
  --shadow:     0 2px 8px rgba(0,0,0,0.40), 0 8px 24px rgba(0,0,0,0.35);
  color-scheme: dark;
}

/* ── Reset ───────────────────────────────────────────────── */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: -apple-system, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ── Layout ──────────────────────────────────────────────── */
.app-wrapper {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 230px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 0;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  overflow-y: auto;
  z-index: 300;
  transition: transform 0.22s ease;
  will-change: transform;
  box-shadow: 2px 0 12px rgba(0,0,0,0.04);
}

.sidebar-brand {
  padding: 18px 20px 16px;
  border-bottom: 1px solid var(--border);
}

.sidebar-logo {
  width: 100%;
  height: auto;
  display: block;
}

.sidebar-profile {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--surface2);
}

.sidebar-profile .player-name {
  font-weight: 700;
  font-size: 13px;
  color: var(--text);
}

.sidebar-profile .player-meta {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 2px;
}

.sidebar-nav {
  padding: 10px 0 12px;
}
.sidebar-footer {
  padding: 10px 0 20px;
  border-top: 1px solid var(--border);
  margin-top: auto;
}

.nav-section-label {
  padding: 14px 20px 4px;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-dim);
  font-weight: 700;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px 9px 16px;
  margin: 1px 8px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: background 0.14s, color 0.14s;
  border-left: none;
}

.nav-link:hover {
  background: var(--surface3);
  color: var(--text);
}

.nav-link.active {
  background: var(--accent-lt);
  color: var(--accent);
  font-weight: 700;
}

.nav-link .nav-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  opacity: 0.45;
  transition: opacity .15s, filter .15s;
}
.nav-link:hover .nav-icon { opacity: 0.75; }
.nav-link.active .nav-icon {
  filter: brightness(0) saturate(100%) invert(62%) sepia(79%) saturate(874%) hue-rotate(347deg) brightness(102%) contrast(96%);
  opacity: 1;
}

.main-content {
  margin-left: 230px;
  flex: 1;
  padding: 32px 36px;
  max-width: 1280px;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
}

.page-header h1,
.page-title {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text);
  line-height: 1.2;
}

.page-header .sub,
.page-sub {
  color: var(--text-muted);
  font-size: 13px;
  margin-top: 4px;
}

/* ── Cards ───────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.card-sm {
  padding: 16px 20px;
}

.card-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-value {
  font-size: 40px;
  font-weight: 900;
  letter-spacing: -1.5px;
  line-height: 1;
  color: var(--text);
}

.card-unit {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-muted);
  margin-left: 4px;
}

/* ── Grid ────────────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

.col-span-2 { grid-column: span 2; }

/* ── Stat Tiles ──────────────────────────────────────────── */
.stat-tile {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 20px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.15s;
}

.stat-tile:hover {
  box-shadow: var(--shadow);
}


.stat-tile .tile-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
  font-weight: 700;
}

.stat-tile .tile-value {
  font-size: 36px;
  font-weight: 900;
  letter-spacing: -1.5px;
  margin-top: 10px;
  line-height: 1;
  color: var(--text);
}

.stat-tile.blue   .tile-value { color: var(--info); }
.stat-tile.green  .tile-value { color: var(--accent); }
.stat-tile.orange .tile-value { color: var(--warn); }
.stat-tile.purple .tile-value { color: var(--purple); }
.stat-tile.red    .tile-value { color: var(--danger); }

.stat-tile .tile-sub {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 8px;
}

/* ── Progress Bars ───────────────────────────────────────── */
.progress-bar-wrap {
  background: var(--surface3);
  border-radius: 99px;
  height: 6px;
  position: relative;
  overflow: hidden;
  margin: 6px 0;
}

.progress-bar-fill {
  height: 100%;
  border-radius: 99px;
  transition: width 0.6s ease;
}

.progress-label {
  position: absolute;
  right: 0;
  top: -16px;
  font-size: 10px;
  font-weight: 700;
  color: var(--text-dim);
}

.macro-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.macro-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  width: 72px;
  flex-shrink: 0;
}

.macro-wrap { flex: 1; }

.macro-nums {
  font-size: 11px;
  color: var(--text-dim);
  white-space: nowrap;
}

/* ── Meal Cards ──────────────────────────────────────────── */
.meal-list { display: flex; flex-direction: column; gap: 6px; }

.meal-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.meal-item:hover { border-color: var(--border-mid); box-shadow: var(--shadow-sm); }

.meal-item.critical { border-left: 3px solid var(--warn); }

.meal-item.completed-meal {
  border-color: rgba(242,138,40,0.25);
  background: rgba(242,138,40,0.02);
  opacity: .85;
}

.meal-item.zma-item { border-left: 3px solid var(--purple); }

/* Header row — always visible */
.meal-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  cursor: pointer;
  user-select: none;
}

.meal-icon { display: none; }

.meal-info { flex: 1; min-width: 0; }

.meal-name {
  font-weight: 700;
  font-size: 13px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.meal-time {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 1px;
}

/* Macro chips */
.meal-macros {
  display: flex;
  gap: 6px;
  margin-top: 0;
  flex-wrap: wrap;
  align-items: center;
}

.meal-macro {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2px 9px;
  white-space: nowrap;
}

.meal-macro strong { font-weight: 700; color: var(--text); }

/* Chevron toggle */
.meal-chevron {
  font-size: 11px;
  color: var(--text-dim);
  transition: transform .2s;
  flex-shrink: 0;
}
.meal-item.is-open .meal-chevron { transform: rotate(180deg); }

/* Expandable detail area */
.meal-details {
  display: none;
  padding: 0 16px 14px;
  border-top: 1px solid var(--border);
}
.meal-item.is-open .meal-details { display: block; }

.meal-foods {
  font-size: 13px;
  color: var(--text-muted);
  padding-top: 12px;
  line-height: 1.7;
}

.hormone-note {
  margin-top: 10px;
  padding: 8px 12px;
  background: rgba(124,58,237,0.05);
  border-left: 2px solid var(--purple);
  border-radius: 0 4px 4px 0;
  font-size: 12px;
  color: #7c3aed;
  line-height: 1.6;
}

.timing-note {
  margin-top: 8px;
  padding: 8px 12px;
  background: rgba(217,119,6,0.05);
  border-left: 2px solid var(--warn);
  border-radius: 0 4px 4px 0;
  font-size: 12px;
  color: var(--warn);
  line-height: 1.6;
}

.critical-badge {
  font-size: 10px;
  font-weight: 700;
  background: rgba(217,119,6,0.1);
  border: 1px solid rgba(217,119,6,0.3);
  color: var(--warn);
  padding: 2px 7px;
  border-radius: 99px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

/* ── Forms ───────────────────────────────────────────────── */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 7px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-label small {
  font-size: 11px;
  color: var(--text-dim);
  text-transform: none;
  letter-spacing: 0;
  font-weight: 400;
  margin-left: 6px;
}

.form-control {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 11px 14px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  font-family: inherit;
}

.form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(242,138,40,0.15);
}

.form-control::placeholder { color: var(--text-dim); }

select.form-control {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%236b7280' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-row.cols-3 {
  grid-template-columns: 1fr 1fr 1fr;
}

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s;
  text-decoration: none;
  letter-spacing: 0.2px;
  font-family: inherit;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  box-shadow: 0 2px 8px rgba(242,138,40,0.25);
}

.btn-primary:hover {
  background: #d9750e;
  border-color: #d9750e;
  box-shadow: 0 4px 14px rgba(242,138,40,0.35);
  transform: translateY(-1px);
}

.btn-success {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  box-shadow: 0 2px 8px rgba(242,138,40,0.2);
}

.btn-success:hover {
  background: #d9750e;
  transform: translateY(-1px);
}

.btn-warning {
  background: var(--warn);
  color: #fff;
  border-color: var(--warn);
}

.btn-warning:hover {
  background: #b45309;
}

.btn-ghost {
  background: var(--surface);
  color: var(--text-muted);
  border-color: var(--border);
}

.btn-ghost:hover {
  background: var(--surface3);
  color: var(--text);
  border-color: var(--border-mid);
}

.btn-sm { padding: 7px 14px; font-size: 12px; }
.btn-full { width: 100%; }

/* ── Badges ──────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2px;
  line-height: 1.4;
}

.badge-blue   { background: #dbeafe; color: #1d4ed8; }
.badge-green  { background: #dcfce7; color: #15803d; }
.badge-orange { background: #fef3c7; color: #b45309; }
.badge-red    { background: #fee2e2; color: #b91c1c; }
.badge-purple { background: #ede9fe; color: #6d28d9; }

/* ── Tables ──────────────────────────────────────────────── */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.data-table th {
  text-align: left;
  padding: 10px 14px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-dim);
  border-bottom: 2px solid var(--border);
  background: var(--surface2);
}

.data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
  vertical-align: middle;
}

.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--surface2); }

/* ── Performance Profile stat list ──────────────────────── */
.perf-stat-list { display: flex; flex-direction: column; }

.perf-stat {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.perf-stat:last-child { border-bottom: none; }

.perf-stat-label {
  font-size: 12px;
  color: var(--text-dim);
  font-weight: 500;
}

.perf-stat-value {
  font-size: 15px;
  font-weight: 800;
  color: var(--text);
  text-align: right;
}
.perf-stat-value small {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-dim);
}

.perf-stat-accent { color: var(--accent); }
.perf-stat-accent small { color: rgba(242,138,40,.7); }

/* ── Setup / Onboarding ──────────────────────────────────── */
.setup-wrap {
  max-width: 640px;
  margin: 0 auto;
  padding: 48px 24px;
}

.setup-hero {
  text-align: center;
  margin-bottom: 40px;
}

.setup-hero .logo-big {
  font-size: 52px;
  font-weight: 900;
  color: var(--accent);
  letter-spacing: -2px;
  line-height: 1;
}

.setup-hero h2 {
  font-size: 22px;
  font-weight: 700;
  margin-top: 14px;
  color: var(--text);
  letter-spacing: -0.3px;
}

.setup-hero p {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 6px;
}

.setup-section {
  margin-bottom: 28px;
}

.setup-section-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

/* ── Education Page ──────────────────────────────────────── */
.edu-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
}


.edu-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 4px;
  letter-spacing: -0.3px;
}

.edu-subtitle {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 20px;
}

.edu-body {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.8;
}

.edu-body p { margin-bottom: 14px; }
.edu-body strong { color: var(--text); }

.edu-timeline {
  margin: 20px 0;
  position: relative;
  padding-left: 20px;
}

.edu-timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 8px; bottom: 8px;
  width: 2px;
  background: var(--border);
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  padding: 12px 0 12px 20px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -20px;
  top: 18px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--surface);
  box-shadow: 0 0 0 2px var(--accent);
}

.timeline-time {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.timeline-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
  line-height: 1.6;
}

.body-systems-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.system-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px 16px;
  transition: box-shadow 0.15s, border-color 0.15s;
  cursor: pointer;
}

.system-card:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 12px rgba(242,138,40,0.15);
}

.system-icon { font-size: 22px; margin-bottom: 8px; }

.system-name {
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.system-desc {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

.system-card.coming-soon { opacity: 0.4; cursor: default; }

/* ── Chart Container ─────────────────────────────────────── */
.chart-wrap {
  position: relative;
  height: 220px;
  margin-top: 16px;
}

/* ── Day Schedule ────────────────────────────────────────── */
.schedule-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 10px;
}

.day-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 8px;
  text-align: center;
  cursor: pointer;
  transition: all 0.15s;
}

.day-card:hover {
  border-color: var(--accent);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.day-card.today {
  border-color: var(--accent);
  background: var(--surface);
  box-shadow: 0 0 0 2px rgba(242,138,40,0.2);
}

.day-name {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
}

.day-icon { font-size: 18px; margin: 8px 0 6px; }

.day-type {
  font-size: 10px;
  color: var(--text-muted);
  font-weight: 600;
}

/* ── Alerts ──────────────────────────────────────────────── */
.alert {
  padding: 13px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 16px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.5;
  border: 1px solid;
}

.alert-success { background: rgba(22,163,74,0.06);  border-color: rgba(22,163,74,0.25);  color: #15803d; }
.alert-warning { background: rgba(217,119,6,0.06);  border-color: rgba(217,119,6,0.25);  color: #b45309; }
.alert-danger  { background: rgba(220,38,38,0.06);  border-color: rgba(220,38,38,0.25);  color: #b91c1c; }
.alert-info    { background: rgba(37,99,235,0.06);  border-color: rgba(37,99,235,0.25);  color: #1d4ed8; }

/* ── ZMA Block ───────────────────────────────────────────── */
.zma-block {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}

.zma-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: -0.3px;
}

.zma-dose-row {
  display: flex;
  gap: 12px;
  margin: 16px 0;
  flex-wrap: wrap;
}

.zma-dose-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.zma-mineral { font-size: 11px; color: var(--text-dim); font-weight: 700; text-transform: uppercase; letter-spacing: 1px; }
.zma-amount  { font-size: 28px; font-weight: 900; color: var(--accent); letter-spacing: -1px; line-height: 1; margin: 6px 0; }
.zma-unit    { font-size: 11px; color: var(--text-dim); }

/* ── Sleep Graph ─────────────────────────────────────────── */
.sleep-bars {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 100px;
  padding: 0 4px;
}

.sleep-bar-wrap { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 4px; }

.sleep-bar {
  width: 100%;
  border-radius: 3px 3px 0 0;
  min-height: 4px;
  transition: height 0.4s ease;
}

.sleep-bar.good { background: var(--accent); }
.sleep-bar.ok   { background: var(--warn); }
.sleep-bar.poor { background: var(--danger); }

.sleep-bar-label { font-size: 10px; color: var(--text-dim); }

/* ── Mobile Navigation ───────────────────────────────────── */
.mobile-topbar {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 54px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  align-items: center;
  padding: 0 16px;
  gap: 14px;
  z-index: 350;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.mobile-brand {
  text-decoration: none;
  display: flex;
  align-items: center;
}

.mobile-brand-logo {
  height: 28px;
  width: auto;
  display: block;
}

.hamburger-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 5px;
  flex-shrink: 0;
  border-radius: 6px;
}

.hamburger-btn:hover { background: var(--surface3); }

.hamburger-btn span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-muted);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}

body.sidebar-open .hamburger-btn span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.sidebar-open .hamburger-btn span:nth-child(2) { opacity: 0; }
body.sidebar-open .hamburger-btn span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0; right: 0; bottom: 0; left: 0;
  background: rgba(0,0,0,0.4);
  z-index: 299;
  -webkit-tap-highlight-color: transparent;
}

/* ── Theme picker ────────────────────────────────────────── */
.theme-picker { display:flex; gap:12px; flex-wrap:wrap; }
.theme-option {
  cursor:pointer;
  border:2px solid var(--border);
  border-radius:var(--radius);
  padding:14px 16px;
  text-align:center;
  transition:border-color .15s, background .15s;
  flex:1;
  min-width:80px;
  max-width:140px;
}
.theme-option:hover  { border-color:var(--border-mid); }
.theme-option.active { border-color:var(--accent); background:var(--accent-lt); }
.theme-swatch {
  display:flex;
  gap:2px;
  height:36px;
  border-radius:6px;
  overflow:hidden;
  margin-bottom:10px;
  border:1px solid rgba(0,0,0,0.08);
}
[data-theme="dark"]     .theme-swatch,
[data-theme="midnight"] .theme-swatch { border-color:rgba(255,255,255,0.06); }
.ts-bg      { flex:2; }
.ts-surface { flex:1.5; }
.ts-accent  { flex:0 0 10px; }
.theme-label { font-size:12px; font-weight:600; color:var(--text); }

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .main-content { padding: 28px 24px; }
}

@media (max-width: 768px) {
  .mobile-topbar { display: flex; }
  .sidebar { transform: translateX(-100%); }
  body.sidebar-open .sidebar { transform: translateX(0); box-shadow: 4px 0 24px rgba(0,0,0,0.15); }
  body.sidebar-open .sidebar-overlay { display: block; left: 230px; }
  body.sidebar-open { overflow: hidden; }

  .main-content { margin-left: 0; padding: 70px 16px 28px; max-width: 100%; }

  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .form-row, .form-row.cols-3 { grid-template-columns: 1fr; }

  .schedule-grid { grid-template-columns: repeat(4, 1fr); }

  .card { padding: 16px; }
  .edu-card { padding: 18px; }

  .page-header h1 { font-size: 22px; }
  .page-header .flex.space-between { flex-wrap: wrap; gap: 10px; }

  .data-table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }

  .form-control { font-size: 16px; }

  .btn { min-height: 44px; }

  .stat-tile .tile-value { font-size: 28px; }

  .macro-label { width: 60px; }

  .zma-dose-row { flex-wrap: wrap; gap: 10px; }

  .flex.gap-8.mb-24 { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 4px; -webkit-overflow-scrolling: touch; }

  .brain-grid { grid-template-columns: 1fr 1fr !important; }
  .breath-seq { grid-template-columns: 1fr !important; }
  .play-window-grid { grid-template-columns: 1fr !important; }
  .proto-row { flex-direction: column; gap: 4px; }
  .proto-time { min-width: unset !important; }
  .atp-bar-grid { grid-template-columns: repeat(3, 1fr) !important; }
  .precursor-grid { grid-template-columns: 1fr !important; }

  .energy-system-grid { grid-template-columns: 1fr !important; }
  .fiber-grid { grid-template-columns: 1fr 1fr !important; }
  .breath-protocol { grid-template-columns: 1fr !important; }
  .anti-grid { grid-template-columns: 1fr !important; }
  .synergy-map { grid-template-columns: 1fr !important; }

  .step-item { max-width: 100%; }
}

@media (max-width: 480px) {
  .main-content { padding: 62px 12px 20px; }
  .card { padding: 14px; }
  .edu-card { padding: 14px; }
  .page-header h1 { font-size: 20px; }
  .edu-title { font-size: 17px; }
  .card-value { font-size: 32px; }
  .stat-tile .tile-value { font-size: 24px; }

  .day-card { padding: 8px 4px; }
  .day-name { font-size: 9px; }
  .day-icon { font-size: 14px; margin: 5px 0 4px; }
  .day-type { font-size: 9px; }

  .brain-grid { grid-template-columns: 1fr !important; }
  .fiber-grid { grid-template-columns: 1fr !important; }
  .atp-bar-grid { grid-template-columns: repeat(3, 1fr) !important; }

  .zma-dose-row { gap: 8px; }
  .zma-amount { font-size: 22px; }

  .btn-sm { font-size: 11px; padding: 6px 12px; }
}

/* ── Utilities ───────────────────────────────────────────── */
.mt-0  { margin-top: 0; }
.mt-8  { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }

.mb-8  { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }

.text-center  { text-align: center; }
.text-muted   { color: var(--text-muted); }
.text-dim     { color: var(--text-dim); }
.text-accent  { color: var(--accent); }
.text-green   { color: var(--accent); }
.text-orange  { color: var(--warn); }
.text-red     { color: var(--danger); }
.text-purple  { color: var(--purple); }
.text-sm      { font-size: 13px; }
.text-xs      { font-size: 11px; }
.fw-700       { font-weight: 700; }
.fw-900       { font-weight: 900; }

.flex         { display: flex; }
.flex-center  { display: flex; align-items: center; }
.gap-8        { gap: 8px; }
.gap-12       { gap: 12px; }
.gap-16       { gap: 16px; }
.space-between{ justify-content: space-between; }

.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 20px 0;
}

.check-icon {
  width: 26px; height: 26px;
  border-radius: 50%;
  background: rgba(242,138,40,0.1);
  border: 1px solid rgba(242,138,40,0.3);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px;
  flex-shrink: 0;
  color: var(--accent);
}