/* Cutheads Design System — Modern Glass + Premium Dark/Gold */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --bg: #09090B;
  --bg-subtle: #0F0F12;
  --surface: #18181B;
  --surface-hover: #1F1F23;
  --card: #1C1C21;
  --card-hover: #232328;
  --border: #27272A;
  --border-hover: #3F3F46;
  --accent: #F59E0B;
  --accent-hover: #FBBF24;
  --accent-dim: rgba(245, 158, 11, 0.12);
  --accent-glow: rgba(245, 158, 11, 0.25);
  --success: #22C55E;
  --success-dim: rgba(34, 197, 94, 0.12);
  --error: #EF4444;
  --error-dim: rgba(239, 68, 68, 0.12);
  --warning: #F59E0B;
  --info: #3B82F6;
  --info-dim: rgba(59, 130, 246, 0.12);
  --text: #FAFAFA;
  --text-secondary: #A1A1AA;
  --text-muted: #71717A;
  --text-inverse: #09090B;
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 20px var(--accent-glow);
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Focus States — Accessibility */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--accent);
  color: var(--text-inverse);
  padding: 8px 16px;
  z-index: 1000;
  font-weight: 600;
  border-radius: 0 0 var(--radius-sm) 0;
  transition: top var(--transition-fast);
}
.skip-link:focus { top: 0; }

/* Navigation — Glass morphism */
.nav {
  background: rgba(24, 24, 27, 0.85);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  padding: 10px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 4px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  overflow: hidden;
}

.nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.nav a:hover {
  background: var(--surface-hover);
  color: var(--text);
}

.nav a.active {
  background: var(--accent);
  color: var(--text-inverse);
  font-weight: 600;
}

/* Header */
.header {
  background: var(--surface);
  padding: 32px 24px;
  border-bottom: 1px solid var(--border);
}

.header h1 {
  font-size: 28px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.5px;
}

.header .subtitle {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 6px;
}

/* Sections */
.section { padding: 24px; }

.section-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 16px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.section-title:first-child { border-top: none; padding-top: 0; }

/* KPI Cards — Glass effect */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.kpi-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--border);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.kpi-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.kpi-card:hover {
  border-color: var(--border-hover);
  background: var(--card-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.kpi-card:hover::before { opacity: 1; }

.kpi-card .label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.kpi-card .value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.5px;
}

.kpi-card .change {
  font-size: 13px;
  margin-top: 6px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.kpi-card .change.up { color: var(--success); }
.kpi-card .change.down { color: var(--error); }

.kpi-card .target {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 6px;
}

/* Chart Boxes */
.charts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(380px, 100%), 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.charts-full { grid-template-columns: 1fr; }

.chart-box {
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--border);
  transition: border-color var(--transition);
  min-height: 280px;
  overflow: hidden;
}

.chart-box:hover { border-color: var(--border-hover); }

.chart-box h3 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.chart-box canvas { min-height: 200px; }

/* Tables */
.table-box {
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--border);
  margin-bottom: 16px;
  overflow-x: auto;
}

.table-box h3 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

table { width: 100%; border-collapse: collapse; }

th {
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 12px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

td {
  padding: 12px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  white-space: nowrap;
}

td.num { text-align: right; font-variant-numeric: tabular-nums; }
th.num { text-align: right; }

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

tr:hover td { background: var(--surface-hover); }

tr.highlight td { background: var(--accent-dim); }

/* Tags */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.tag-maps { background: var(--accent-dim); color: var(--accent); }
.tag-site { background: var(--error-dim); color: var(--error); }
.tag-data { background: var(--success-dim); color: var(--success); }
.tag-plan { background: var(--accent-dim); color: var(--accent); }
.tag-finance { background: var(--error-dim); color: var(--error); }
.tag-marketing { background: var(--info-dim); color: var(--info); }

/* Index Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  padding: 40px 24px;
  max-width: 1000px;
  width: 100%;
}

.card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--border);
  text-decoration: none;
  color: var(--text);
  transition: all var(--transition);
  cursor: pointer;
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.card .icon {
  width: 48px;
  height: 48px;
  background: var(--accent-dim);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  transition: background var(--transition);
}

.card:hover .icon { background: var(--accent-glow); }

.card .icon svg { width: 24px; height: 24px; stroke: var(--accent); fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

.card h2 { font-size: 18px; font-weight: 700; margin-bottom: 8px; letter-spacing: -0.3px; }
.card p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }
.card .tag { margin-top: 12px; }

/* Forms */
input, select, textarea {
  font-family: inherit;
  font-size: 14px;
}

button {
  font-family: inherit;
  font-size: 14px;
  cursor: pointer;
  min-height: 44px;
}

/* Footer */
.footer {
  padding: 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
  border-top: 1px solid var(--border);
}

/* Responsive — Mobile First */
@media (max-width: 1024px) {
  .nav { padding: 10px 16px; }
  .header { padding: 24px 16px; }
  .section { padding: 16px; }
}

@media (max-width: 768px) {
  .nav { padding: 8px 12px; gap: 4px; }
  .nav-toggle { display: flex !important; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(24, 24, 27, 0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 8px;
    gap: 2px;
    z-index: 99;
    max-height: 70vh;
    overflow-y: auto;
  }
  .nav-links.open { display: flex; }
  .nav-links a {
    padding: 12px 16px;
    font-size: 14px;
    min-height: 44px;
    width: 100%;
    border-radius: var(--radius-sm);
    flex-shrink: 1;
  }
  .nav-links a.active { background: var(--accent); }
  .header { padding: 20px 16px; }
  .header h1 { font-size: 22px; letter-spacing: -0.3px; }
  .header .subtitle { font-size: 12px; margin-top: 4px; }
  .section { padding: 12px; }
  .section-title { font-size: 11px; padding-top: 16px; margin-bottom: 12px; }
  .kpi-grid { grid-template-columns: repeat(2, 1fr) !important; gap: 8px; }
  .kpi-card { padding: 14px; }
  .kpi-card .value { font-size: 20px; }
  .kpi-card .label { font-size: 10px; }
  .charts { grid-template-columns: 1fr; gap: 12px; }
  .chart-box { padding: 14px; min-height: 220px; overflow: hidden; }
  .chart-box h3 { font-size: 12px; margin-bottom: 12px; }
  .chart-box canvas { min-height: 160px; width: 100% !important; }
  .cards { grid-template-columns: 1fr; padding: 16px; gap: 12px; }
  .card { padding: 20px; }
  .card h2 { font-size: 16px; }
  .card p { font-size: 13px; }
  table { font-size: 12px; }
  th { padding: 10px 8px; font-size: 10px; }
  td { padding: 10px 8px; font-size: 12px; }
  .table-box { padding: 12px; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .footer { padding: 16px; font-size: 11px; }
  .filter-form { flex-direction: column !important; align-items: stretch; gap: 8px !important; }
  .filter-form label { margin-bottom: -4px; }
  .filter-form select,
  .filter-form input[type="date"] { width: 100%; }
  .filter-form .filter-row { display: flex; gap: 8px; align-items: center; }
  .filter-form .filter-row span { flex-shrink: 0; }
  .actions-grid { grid-template-columns: 1fr !important; }
  .summary-text { font-size: 12px !important; }
  .compare-grid { grid-template-columns: 1fr !important; }
  .tab-bar { padding: 10px 12px; gap: 3px; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .tab-btn { padding: 8px 14px; font-size: 12px; white-space: nowrap; }
  .metric-pill { min-width: 120px; }
  .barber-card { min-width: auto; }
}

@media (max-width: 480px) {
  .header { padding: 16px 12px; }
  .header h1 { font-size: 18px; }
  .kpi-grid { grid-template-columns: 1fr !important; }
  .kpi-card { padding: 12px; }
  .kpi-card .value { font-size: 18px; }
  .section { padding: 10px; }
  .section-title { font-size: 10px; padding-top: 12px; margin-bottom: 10px; }
  .chart-box { padding: 10px; min-height: 180px; }
  .chart-box canvas { min-height: 140px; }
  .barber-card { padding: 14px; min-width: auto; }
  .barber-stat { font-size: 11px; }
  .svc-row { flex-wrap: wrap; gap: 8px; padding: 10px; }
  .svc-stats { width: 100%; justify-content: space-between; }
  .svc-stat { min-width: auto; }
  .metric-row { gap: 8px; }
  .metric-pill { min-width: 100%; padding: 10px 12px; }
  .metric-pill .value { font-size: 18px; }
  .metric-pill .label { font-size: 9px; }
  .tab-bar { padding: 10px 12px; gap: 3px; }
  .tab-btn { padding: 8px 14px; font-size: 12px; white-space: nowrap; }
  .compare-grid { grid-template-columns: 1fr !important; gap: 12px; }
  .nav a { font-size: 12px; padding: 6px 10px; }
  .cards { padding: 12px; }
  .card { padding: 16px; }
  .card h2 { font-size: 15px; }
  .card p { font-size: 12px; }
}

/* Hamburger menu */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 22px;
  cursor: pointer;
  padding: 8px 12px;
  min-height: 44px;
  min-width: 44px;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* Touch optimizations */
@media (hover: none) and (pointer: coarse) {
  .nav a, .tab-btn, button, .card, .kpi-card {
    min-height: 44px;
    min-width: 44px;
  }
  .svc-row { cursor: default; }
  .svc-row:hover { border-color: var(--border); }
  input, select, textarea {
    font-size: 16px !important;
  }
}

/* Mobile touch scroll for tables and tab bars */
.table-box, .charts {
  -webkit-overflow-scrolling: touch;
}

/* Mobile form improvements */
@media (max-width: 768px) {
  input, select, textarea {
    font-size: 16px;
    padding: 12px;
  }
  button {
    min-height: 48px;
    padding: 12px 20px;
  }
  .nav-links a {
    padding: 14px 16px;
    min-height: 48px;
  }
  .filter-form input[type="date"],
  .filter-form select {
    min-height: 48px;
  }
}

/* Safe area for notch devices */
@supports (padding: env(safe-area-inset-bottom)) {
  .footer { padding-bottom: calc(16px + env(safe-area-inset-bottom)); }
  .nav { padding-left: calc(12px + env(safe-area-inset-left)); padding-right: calc(12px + env(safe-area-inset-right)); }
}

/* Utility Classes */
.text-success { color: var(--success); }
.text-error { color: var(--error); }
.text-warning { color: var(--warning); }
.text-info { color: var(--info); }
.text-muted { color: var(--text-muted); }
.text-accent { color: var(--accent); }