/* ============================================
   Pantry Spike Report - Stylesheet
   Impeccable light mode, OKLCH warm-green system
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;600;700&family=DM+Sans:wght@400;500&display=swap');

/* --- CSS Custom Properties (Impeccable Light Mode) --- */
:root {
  /* Core palette: warm cream, green-tinted neutrals */
  --bg-base:       oklch(98% 0.008 155);   /* warm cream white */
  --bg-surface:    oklch(96% 0.008 155);   /* cards, panels */
  --bg-muted:      oklch(93% 0.01 155);    /* subtle sections */
  --text-primary:  oklch(20% 0.01 155);    /* near-black, green-tinted */
  --text-secondary: oklch(45% 0.01 155);
  --text-muted:    oklch(60% 0.008 155);
  --accent:        oklch(45% 0.13 155);    /* forest green - use sparingly */
  --accent-light:  oklch(90% 0.05 155);    /* tinted bg for accent areas */
  --accent-dark:   oklch(35% 0.12 155);    /* hover state */
  --border:        oklch(88% 0.01 155);
  --border-subtle: oklch(92% 0.008 155);
  --shadow-sm:     0 1px 3px oklch(20% 0.01 155 / 0.08);
  --shadow-md:     0 4px 12px oklch(20% 0.01 155 / 0.1);

  /* Aliases for existing component references */
  --bg-primary:    var(--bg-base);
  --bg-secondary:  var(--bg-surface);
  --bg-card:       oklch(97.5% 0.007 155);
  --bg-card-hover: var(--bg-muted);
  --bg-hero:       linear-gradient(160deg, oklch(96.5% 0.012 155) 0%, oklch(98% 0.008 155) 55%, oklch(97% 0.01 155) 100%);
  --text-accent:   var(--accent);
  --accent-primary:   var(--accent);
  --accent-secondary: var(--accent-dark);
  --accent-tertiary:  var(--accent);
  --accent-info:   oklch(48% 0.1 230);
  --accent-danger: oklch(48% 0.15 25);
  --accent-glow:   oklch(45% 0.13 155 / 0.08);
  --border-color:  var(--border);
  --border-hover:  oklch(82% 0.012 155);
  --shadow:        var(--shadow-sm);
  --shadow-lg:     var(--shadow-md);
  --shadow-glow:   0 0 20px oklch(45% 0.13 155 / 0.06);
  --color-success: oklch(52% 0.12 155);
  --color-text-secondary: var(--text-secondary);

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  /* Typography */
  --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'SF Mono', 'Cascadia Code', 'Fira Code', monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-hero: 3.5rem;

  /* Layout */
  --sidebar-width: 260px;
  --header-height: 60px;
  --content-max-width: 960px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.metric-value,
.web-kpi-value,
.dash-card-value,
td,
.price,
[class*="price"],
[class*="amount"],
[class*="budget"] {
  font-variant-numeric: tabular-nums;
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-secondary);
  text-decoration: underline;
}

img {
  max-width: 100%;
  height: auto;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  color: var(--text-primary);
  font-weight: 600;
  font-family: var(--font-heading);
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(1.8rem, 4vw, 2.5rem); margin-bottom: var(--space-lg); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: var(--space-lg); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.5rem); margin-bottom: var(--space-md); }
h4 { font-size: var(--font-size-xl); margin-bottom: var(--space-md); }
h5 { font-size: var(--font-size-lg); margin-bottom: var(--space-sm); }

p {
  margin-bottom: var(--space-md);
  color: var(--text-secondary);
}

strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* --- Layout: Header --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: oklch(98% 0.008 155 / 0.92);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-lg);
  z-index: 1000;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.site-header .logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--accent);
  font-family: var(--font-heading);
  letter-spacing: -0.02em;
}

.site-header .logo-icon {
  font-size: 1.5rem;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* --- Theme Toggle --- */
.theme-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 6px 12px;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

/* --- Mobile Menu Button --- */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--space-xs);
  line-height: 1;
}

/* --- Layout: Sidebar Navigation --- */
.sidebar {
  position: fixed;
  top: var(--header-height);
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  overflow-y: auto;
  padding: var(--space-md) 0;
  z-index: 900;
  transition: transform var(--transition-normal);
}

.sidebar-nav {
  list-style: none;
}

.sidebar-nav .nav-group-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  padding: var(--space-lg) var(--space-lg) var(--space-xs) var(--space-lg);
  font-family: var(--font-body);
}

.sidebar-nav .nav-item {
  display: block;
}

.sidebar-nav .nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.sidebar-nav .nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-card);
  text-decoration: none;
}

.sidebar-nav .nav-link.active {
  color: var(--accent);
  background: var(--accent-light);
  border-left-color: var(--accent);
  font-weight: 600;
}

.sidebar-nav .nav-link .nav-icon {
  display: none;
}

.sidebar-nav .nav-link .nav-label {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Nested sub-nav for UI Mockups */
.sidebar-nav .sub-nav {
  list-style: none;
  padding-left: var(--space-xl);
}

.sidebar-nav .sub-nav .nav-link {
  font-size: var(--font-size-xs);
  padding: var(--space-xs) var(--space-lg);
}

/* --- Layout: Main Content --- */
.main-content {
  margin-left: var(--sidebar-width);
  margin-top: var(--header-height);
  min-height: calc(100vh - var(--header-height));
}

.tab-content {
  display: none;
  padding: var(--space-2xl) var(--space-xl);
  max-width: var(--content-max-width);
  margin: 0 auto;
  animation: fadeIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.tab-content.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- Hero Section --- */
.hero {
  background: var(--bg-hero);
  padding: var(--space-3xl) var(--space-xl);
  text-align: center;
  margin: calc(-1 * var(--space-2xl)) calc(-1 * var(--space-xl)) var(--space-2xl);
  border-bottom: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, oklch(45% 0.13 155 / 0.06) 0%, transparent 50%),
              radial-gradient(circle at 70% 50%, oklch(45% 0.13 155 / 0.04) 0%, transparent 50%);
  pointer-events: none;
}

.hero > * {
  position: relative;
}

.hero-title {
  font-size: var(--font-size-hero);
  font-weight: 700;
  margin-bottom: var(--space-md);
  color: var(--accent-dark);
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-lg);
}

.hero-meta {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.hero-meta .badge {
  display: inline-block;
  margin: 0 var(--space-xs);
}

/* --- Card Component --- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.card:hover {
  border-color: var(--border);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border-color);
}

.card-header h3 {
  margin-bottom: 0;
}

.card-accent {
  border-left: 3px solid var(--accent-primary);
}

.card-info {
  border-left: 3px solid var(--accent-info);
}

.card-success {
  border-left: 3px solid var(--accent-tertiary);
}

.card-warning {
  border-left: 3px solid var(--accent-secondary);
}

.card-danger {
  border-left: 3px solid var(--accent-danger);
}

/* --- Badge Component --- */
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: var(--radius-xl);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-primary {
  background: var(--accent-light);
  color: var(--accent);
  border: 1px solid oklch(45% 0.13 155 / 0.3);
}

.badge-success {
  background: oklch(90% 0.05 155);
  color: var(--accent);
  border: 1px solid oklch(45% 0.13 155 / 0.3);
}

.badge-info {
  background: oklch(90% 0.04 230);
  color: var(--accent-info);
  border: 1px solid oklch(48% 0.1 230 / 0.3);
}

.badge-warning {
  background: oklch(92% 0.04 75);
  color: oklch(45% 0.12 75);
  border: 1px solid oklch(45% 0.12 75 / 0.3);
}

.badge-danger {
  background: oklch(92% 0.04 25);
  color: var(--accent-danger);
  border: 1px solid oklch(48% 0.15 25 / 0.3);
}

.badge-neutral {
  background: var(--bg-muted);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

/* --- Collapsible Sections --- */
.collapsible {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  overflow: hidden;
}

.collapsible-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  cursor: pointer;
  user-select: none;
  transition: background var(--transition-fast);
}

.collapsible-header:hover {
  background: var(--bg-card-hover);
}

.collapsible-header h4,
.collapsible-header h3 {
  margin-bottom: 0;
  flex: 1;
}

.collapsible-icon {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  transition: transform var(--transition-normal);
  flex-shrink: 0;
  margin-left: var(--space-md);
}

.collapsible.open .collapsible-icon {
  transform: rotate(180deg);
}

.collapsible-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.collapsible.open .collapsible-body {
  max-height: 5000px;
}

.collapsible-content {
  padding: 0 var(--space-lg) var(--space-lg);
}

/* --- Table Component --- */
.table-wrap {
  overflow-x: auto;
  margin-bottom: var(--space-lg);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

thead {
  background: var(--bg-secondary);
}

th {
  padding: var(--space-md) var(--space-md);
  text-align: left;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 2px solid var(--border-color);
  white-space: nowrap;
}

td {
  padding: var(--space-md) var(--space-md);
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
  vertical-align: top;
}

tr:last-child td {
  border-bottom: none;
}

tbody tr:hover {
  background: var(--bg-card-hover);
}

/* --- Device Mockup Frames --- */
.mockup-frame {
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: var(--space-lg) 0;
  box-shadow: var(--shadow-lg);
  background: var(--bg-card);
}

.mockup-frame-header {
  background: var(--bg-secondary);
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.mockup-frame-header .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-color);
}

.mockup-frame-header .dot:nth-child(1) { background: var(--accent-danger); }
.mockup-frame-header .dot:nth-child(2) { background: var(--accent-primary); }
.mockup-frame-header .dot:nth-child(3) { background: var(--accent-tertiary); }

.mockup-frame-body {
  padding: var(--space-lg);
}

/* Phone frame */
.phone-frame {
  max-width: 375px;
  margin: var(--space-lg) auto;
  border: 3px solid var(--border-color);
  border-radius: 36px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--bg-card);
}

.phone-frame-notch {
  background: var(--bg-secondary);
  height: 28px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
}

.phone-frame-notch::after {
  content: '';
  width: 100px;
  height: 16px;
  background: var(--bg-primary);
  border-radius: 12px;
}

.phone-frame-body {
  padding: var(--space-md);
  min-height: 500px;
  overflow-y: auto;
}

.phone-frame-home {
  background: var(--bg-secondary);
  height: 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
}

.phone-frame-home::after {
  content: '';
  width: 100px;
  height: 4px;
  background: var(--text-muted);
  border-radius: 2px;
}

/* Nest Hub frame */
.nest-frame {
  max-width: 600px;
  margin: var(--space-lg) auto;
  border: 3px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--bg-card);
}

.nest-frame-body {
  padding: var(--space-lg);
  min-height: 340px;
}

.nest-frame-stand {
  background: var(--bg-secondary);
  height: 40px;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* --- Chat Bubble Component --- */
.chat-container {
  max-width: 500px;
  margin: var(--space-lg) auto;
}

.chat-bubble {
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-sm);
  max-width: 80%;
  font-size: var(--font-size-sm);
  line-height: 1.5;
  position: relative;
}

.chat-bubble.sent {
  background: var(--accent-primary);
  color: oklch(98% 0.008 155);
  margin-left: auto;
  border-bottom-right-radius: var(--radius-sm);
}

.chat-bubble.received {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-bottom-left-radius: var(--radius-sm);
}

.chat-bubble.system {
  background: oklch(90% 0.05 155 / 0.5);
  color: var(--accent-tertiary);
  border: 1px solid oklch(45% 0.13 155 / 0.2);
  text-align: center;
  max-width: 100%;
  font-size: var(--font-size-xs);
}

.chat-bubble .chat-time {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-top: var(--space-xs);
}

.chat-bubble.sent .chat-time {
  color: oklch(98% 0.008 155 / 0.7);
}

/* --- Metric / Stat Cards --- */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  text-align: center;
}

.metric-value {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--accent-primary);
  margin-bottom: var(--space-xs);
}

.metric-label {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* --- Tag / Pill Grid --- */
.tag-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-xl);
  font-size: var(--font-size-xs);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

/* --- Progress Bar --- */
.progress-bar {
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  height: 8px;
  overflow: hidden;
  margin-bottom: var(--space-sm);
}

.progress-fill {
  height: 100%;
  border-radius: var(--radius-xl);
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-info));
  transition: width var(--transition-slow);
}

/* --- Priority Matrix Styling --- */
.priority-high { color: var(--accent-danger); font-weight: 600; }
.priority-medium { color: var(--accent-primary); font-weight: 600; }
.priority-low { color: var(--accent-tertiary); font-weight: 600; }

/* --- Grid Layouts --- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

/* --- Lists --- */
.styled-list {
  list-style: none;
  padding: 0;
}

.styled-list li {
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.styled-list li:last-child {
  border-bottom: none;
}

.styled-list li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-primary);
  margin-top: 8px;
  flex-shrink: 0;
}

/* --- Persona Card --- */
.persona-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-lg);
}

.persona-header {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.persona-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  font-family: var(--font-heading);
  flex-shrink: 0;
}

.persona-name {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: 2px;
}

.persona-role {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

/* --- Journey Flow --- */
.journey-flow {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  align-items: center;
  margin: var(--space-md) 0;
}

.journey-step {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.journey-arrow {
  color: var(--accent-primary);
  font-size: var(--font-size-lg);
}

/* --- Blockquote / Callout --- */
.callout {
  background: var(--accent-light);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-lg);
  color: var(--text-secondary);
}

.callout strong {
  color: var(--accent);
}

.callout-info {
  background: rgba(107, 163, 196, 0.1);
  border-left-color: var(--accent-info);
}

.callout-info strong {
  color: var(--accent-info);
}

.callout-success {
  background: rgba(124, 182, 142, 0.1);
  border-left-color: var(--accent-tertiary);
}

.callout-success strong {
  color: var(--accent-tertiary);
}

/* --- Code / Pre --- */
code {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  background: var(--bg-secondary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  color: var(--accent-primary);
}

pre {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  overflow-x: auto;
  margin-bottom: var(--space-lg);
}

pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--text-primary);
}

/* --- Section Header --- */
.section-header {
  margin-bottom: var(--space-xl);
}

.section-header h2 {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.section-header h2 .section-icon {
  font-size: 1.3em;
}

.section-intro {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 700px;
}

/* --- Divider --- */
.divider {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: var(--space-xl) 0;
}

/* --- Sidebar overlay (mobile) --- */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: oklch(20% 0.01 155 / 0.4);
  z-index: 850;
}

.sidebar-overlay.visible {
  display: block;
}

/* --- Mockup Sub-tabs --- */
.sub-tabs {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: var(--space-sm);
  flex-wrap: wrap;
}

.sub-tab-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-family: var(--font-body);
  padding: var(--space-sm) var(--space-md);
  cursor: pointer;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
}

.sub-tab-btn:hover {
  color: var(--text-primary);
  background: var(--bg-card);
}

.sub-tab-btn.active {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
  font-weight: 500;
}

.sub-tab-content {
  display: none;
}

.sub-tab-content.active {
  display: block;
  animation: fadeIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- Architecture Diagram Styling --- */
.arch-diagram {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  text-align: center;
  margin: var(--space-lg) 0;
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  line-height: 1.6;
  overflow-x: auto;
  white-space: pre;
  color: var(--text-secondary);
}

/* --- Comparison Table --- */
.comparison-check {
  color: var(--accent-tertiary);
  font-weight: bold;
}

.comparison-cross {
  color: var(--accent-danger);
  font-weight: bold;
}

.comparison-partial {
  color: var(--accent-primary);
  font-weight: bold;
}

/* --- Footer --- */
.site-footer {
  margin-left: var(--sidebar-width);
  padding: var(--space-xl);
  text-align: center;
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  border-top: 1px solid var(--border-color);
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --sidebar-width: 280px;
    --font-size-hero: 2.2rem;
    --font-size-4xl: 1.8rem;
    --font-size-3xl: 1.5rem;
  }

  .menu-toggle {
    display: block;
  }

  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
  }

  .site-footer {
    margin-left: 0;
  }

  .tab-content {
    padding: var(--space-lg) var(--space-md);
  }

  .hero {
    padding: var(--space-2xl) var(--space-md);
    margin: calc(-1 * var(--space-lg)) calc(-1 * var(--space-md)) var(--space-lg);
  }

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

  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .persona-header {
    flex-direction: column;
    text-align: center;
  }

  .phone-frame {
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  :root {
    --font-size-hero: 1.8rem;
  }

  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .header-controls {
    gap: var(--space-sm);
  }

  .theme-toggle span {
    display: none;
  }

  .sub-tabs {
    gap: var(--space-xs);
  }

  .sub-tab-btn {
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-xs);
  }
}

/* --- Feedback Widget --- */
.feedback-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent-primary);
  color: oklch(98% 0.008 155);
  border: none;
  font-size: 1.25rem;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  z-index: 1100;
  transition: transform var(--transition-fast), background var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.feedback-fab:hover {
  transform: scale(1.1);
  background: var(--accent-secondary);
}

.feedback-panel {
  position: fixed;
  bottom: 84px;
  right: 24px;
  width: 320px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 1100;
  padding: var(--space-lg);
  animation: fadeIn 0.2s ease;
}

.feedback-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
}

.feedback-panel-header strong {
  font-size: var(--font-size-lg);
}

.feedback-panel-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

.feedback-panel-close:hover {
  color: var(--text-primary);
}

.feedback-section-label {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.feedback-input {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: var(--space-sm) var(--space-md);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-sm);
  resize: vertical;
}

.feedback-input:focus {
  outline: none;
  border-color: var(--accent-primary);
}

.feedback-submit {
  width: 100%;
  background: var(--accent-primary);
  color: oklch(98% 0.008 155);
  border: none;
  border-radius: var(--radius-sm);
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.feedback-submit:hover {
  background: var(--accent-secondary);
}

.feedback-success {
  text-align: center;
  color: var(--accent-tertiary);
  font-weight: 600;
  padding: var(--space-md) 0;
}

/* Feedback viewer */
.feedback-controls {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.btn-feedback-action {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: var(--space-sm) var(--space-lg);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-feedback-action:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.btn-import-label {
  cursor: pointer;
}

.btn-feedback-action.btn-danger:hover {
  border-color: var(--accent-danger);
  color: var(--accent-danger);
}

.feedback-group {
  margin-bottom: var(--space-xl);
}

.feedback-group-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--accent-primary);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border-color);
}

.feedback-entry {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-sm);
}

.feedback-entry-text {
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}

.feedback-entry-meta {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .feedback-panel {
    right: 12px;
    left: 12px;
    width: auto;
    bottom: 80px;
  }

  .feedback-fab {
    bottom: 16px;
    right: 16px;
  }
}

/* --- Print Styles --- */
@media print {
  .site-header,
  .sidebar,
  .sidebar-overlay,
  .theme-toggle,
  .menu-toggle {
    display: none !important;
  }

  .main-content {
    margin-left: 0;
    margin-top: 0;
  }

  .tab-content {
    display: block !important;
    page-break-inside: avoid;
  }

  body {
    background: oklch(99% 0.004 155);
    color: oklch(10% 0.01 155);
  }
}

/* Feedback status */
.feedback-entry-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.feedback-status-badge { font-size: 11px; padding: 3px 10px; border-radius: 12px; flex-shrink: 0; font-weight: 500; white-space: nowrap; }
.feedback-status-badge.status-new { background: oklch(90% 0.04 230); color: oklch(40% 0.1 230); }
.feedback-status-badge.status-in-progress { background: oklch(92% 0.04 75); color: oklch(42% 0.12 75); }
.feedback-status-badge.status-done { background: oklch(90% 0.05 155); color: oklch(38% 0.12 155); }

/* ============================================
   Inline Mockup Components
   ============================================ */

.inline-mockup-grid {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
  padding: 8px 0 24px;
}

.inline-phone {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.inline-phone-label {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
  letter-spacing: 0.03em;
  text-align: center;
  margin: 0;
}

.inline-phone-frame {
  width: 200px;
  height: 400px;
  background: oklch(30% 0.01 155);
  border-radius: 32px;
  border: 2px solid oklch(25% 0.01 155);
  box-shadow: 0 0 0 1px oklch(20% 0.01 155), 0 20px 60px oklch(20% 0.01 155 / 0.2), inset 0 0 0 1px oklch(35% 0.01 155);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

.inline-phone-frame::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 6px;
  background: oklch(22% 0.01 155);
  border-radius: 0 0 6px 6px;
  z-index: 10;
}

.inline-status-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px 4px;
  font-size: 10px;
  font-weight: 600;
  color: oklch(20% 0.01 155);
  flex-shrink: 0;
}

.inline-screen {
  flex: 1;
  overflow: hidden;
  background: oklch(97% 0.008 155);
  display: flex;
  flex-direction: column;
}

.inline-bottom-nav {
  display: flex;
  justify-content: space-around;
  align-items: center;
  padding: 8px 0 12px;
  background: oklch(98% 0.008 155);
  border-top: 1px solid oklch(88% 0.01 155);
  flex-shrink: 0;
}

.inline-nav-icon {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  font-size: 9px;
  color: oklch(60% 0.008 155);
  cursor: pointer;
}

.inline-nav-icon.active {
  color: oklch(45% 0.13 155);
}

/* Nest Hub inline mockup */
.inline-nest-grid {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  justify-content: center;
  padding: 8px 0 24px;
}

.inline-nest {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.inline-nest-label {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
  letter-spacing: 0.03em;
  text-align: center;
  margin: 0;
}

.inline-nest-frame {
  width: 380px;
  height: 215px;
  background: oklch(30% 0.01 155);
  border-radius: 14px 14px 6px 6px;
  border: 2px solid oklch(25% 0.01 155);
  box-shadow: 0 0 0 1px oklch(20% 0.01 155), 0 16px 48px oklch(20% 0.01 155 / 0.18);
  overflow: hidden;
  position: relative;
}

.inline-nest-frame::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 10px;
  background: oklch(28% 0.01 155);
  border-radius: 0 0 4px 4px;
}

.inline-nest-screen {
  width: 100%;
  height: 100%;
  background: oklch(97% 0.008 155);
  display: flex;
  flex-direction: column;
  padding: 16px 20px;
  box-sizing: border-box;
  position: relative;
}

/* WhatsApp inline mockup */
.inline-whatsapp-grid {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
  padding: 8px 0 24px;
}

.inline-wa-phone {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.inline-wa-frame {
  width: 220px;
  height: 420px;
  background: oklch(30% 0.01 155);
  border-radius: 32px;
  border: 2px solid oklch(25% 0.01 155);
  box-shadow: 0 0 0 1px oklch(20% 0.01 155), 0 20px 60px oklch(20% 0.01 155 / 0.2);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

.inline-wa-frame::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 6px;
  background: oklch(22% 0.01 155);
  border-radius: 0 0 6px 6px;
  z-index: 10;
}

.inline-wa-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 12px 10px;
  background: oklch(45% 0.13 155);
  flex-shrink: 0;
}

.inline-wa-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: oklch(40% 0.12 155);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: oklch(98% 0.008 155);
  font-weight: 700;
  flex-shrink: 0;
}

.inline-wa-chat {
  flex: 1;
  background: oklch(97% 0.008 155);
  padding: 10px 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow: hidden;
}

.wa-bubble {
  max-width: 85%;
  padding: 7px 10px;
  border-radius: 8px;
  font-size: 10px;
  line-height: 1.4;
  color: oklch(20% 0.01 155);
  position: relative;
}

.wa-bubble.bot {
  background: oklch(93% 0.01 155);
  border: 1px solid oklch(88% 0.01 155);
  align-self: flex-start;
  border-radius: 0 8px 8px 8px;
}

.wa-bubble.user {
  background: oklch(45% 0.13 155);
  color: oklch(98% 0.008 155);
  align-self: flex-end;
  border-radius: 8px 8px 0 8px;
}

.wa-bubble.bot.confirm {
  background: oklch(90% 0.05 155);
  border-left: 2px solid oklch(45% 0.13 155);
}

.wa-time {
  font-size: 8px;
  color: oklch(60% 0.008 155);
  text-align: right;
  margin-top: 2px;
}

.inline-wa-input {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px 12px;
  background: oklch(96% 0.008 155);
  border-top: 1px solid oklch(88% 0.01 155);
  flex-shrink: 0;
}

.wa-input-field {
  flex: 1;
  background: oklch(98% 0.008 155);
  border: 1px solid oklch(88% 0.01 155);
  border-radius: 20px;
  padding: 6px 10px;
  font-size: 9px;
  color: oklch(45% 0.01 155);
}

/* Desktop dashboard mockup */
.inline-desktop-wrap {
  display: flex;
  justify-content: center;
  padding: 8px 0 24px;
}

.inline-laptop-frame {
  width: 540px;
  background: oklch(30% 0.01 155);
  border-radius: 12px 12px 0 0;
  border: 2px solid oklch(25% 0.01 155);
  box-shadow: 0 0 0 1px oklch(20% 0.01 155), 0 20px 60px oklch(20% 0.01 155 / 0.2);
  overflow: hidden;
}

.inline-laptop-titlebar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  background: oklch(26% 0.01 155);
  border-bottom: 1px solid oklch(22% 0.01 155);
}

.laptop-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.inline-laptop-screen {
  display: flex;
  height: 320px;
  background: oklch(97% 0.008 155);
}

.laptop-sidebar {
  width: 120px;
  background: oklch(96% 0.008 155);
  border-right: 1px solid oklch(88% 0.01 155);
  display: flex;
  flex-direction: column;
  padding: 16px 0;
  flex-shrink: 0;
}

.laptop-nav-item {
  padding: 8px 14px;
  font-size: 10px;
  color: oklch(55% 0.008 155);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 7px;
  border-left: 2px solid transparent;
}

.laptop-nav-item.active {
  color: oklch(20% 0.01 155);
  background: oklch(90% 0.05 155);
  border-left-color: oklch(45% 0.13 155);
}

.laptop-main {
  flex: 1;
  padding: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.laptop-section-title {
  font-size: 11px;
  font-weight: 600;
  color: oklch(45% 0.01 155);
  margin-bottom: 4px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.laptop-budget-bar-bg {
  height: 6px;
  background: oklch(88% 0.01 155);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 4px;
}

.laptop-budget-bar-fill {
  height: 100%;
  border-radius: 3px;
  background: oklch(45% 0.13 155);
}

.laptop-category-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 9px;
  color: oklch(50% 0.01 155);
  margin-bottom: 3px;
}

.laptop-cat-bar {
  height: 5px;
  border-radius: 2px;
  background: oklch(35% 0.12 155);
}

.laptop-alert-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 9px;
  padding: 4px 0;
  border-bottom: 1px solid oklch(88% 0.01 155);
  color: oklch(45% 0.01 155);
}

.laptop-badge {
  font-size: 8px;
  padding: 2px 6px;
  border-radius: 8px;
  font-weight: 600;
}

.laptop-badge.low { background: oklch(65% 0.15 60 / 0.12); color: oklch(50% 0.15 60); }
.laptop-badge.out { background: oklch(50% 0.15 25 / 0.12); color: oklch(50% 0.15 25); }
.feedback-status-badge.status-wont-do { background: oklch(60% 0.008 155 / 0.12); color: oklch(55% 0.008 155); }