/* CSS Variables */
:root {
  /* Colors */
  --primary: #7c3aed;
  --accent: #06b6d4;
  --bg: #0b1220;
  --card: #111a2b;
  --text: #e6eef9;
  --muted: #94a3b8;
  --success: #22c55e;
  --danger: #ef4444;
  --warn: #f59e0b;

  /* Light theme colors */
  --bg-light: #ffffff;
  --card-light: #f8fafc;
  --text-light: #1e293b;
  --muted-light: #64748b;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Border radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Transitions */
  --transition-fast: 120ms ease;
  --transition-normal: 180ms ease;
  --transition-slow: 300ms ease;

  /* Fonts */
  --font-tabular: "Inter", system-ui, sans-serif;
  font-feature-settings: "tnum";
}

/* Light theme */
[data-theme="light"] {
  --bg: var(--bg-light);
  --card: var(--card-light);
  --text: var(--text-light);
  --muted: var(--muted-light);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.15), 0 2px 4px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.15), 0 4px 6px -2px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.15), 0 10px 10px -5px rgba(0, 0, 0, 0.08);
}

/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(11, 18, 32, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
  transition: all var(--transition-normal);
}

[data-theme="light"] .header {
  background: rgba(255, 255, 255, 0.8);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 600;
  font-size: 1.25rem;
}

.nav-logo {
  width: 2rem;
  height: 2rem;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--space-lg);
  margin: 0 var(--space-xl);
}

.nav-link {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
  padding: var(--space-sm) 0;
}

.nav-link:hover,
.nav-link:focus {
  color: var(--text);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width var(--transition-fast);
}

.nav-link:hover::after {
  width: 100%;
}

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

.theme-toggle {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: var(--space-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  color: var(--text);
  background: rgba(124, 58, 237, 0.1);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 0.25rem;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav-toggle span {
  width: 1.5rem;
  height: 2px;
  background: var(--text);
  transition: all var(--transition-fast);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  border: none;
  border-radius: var(--radius-md);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.875rem;
  line-height: 1.4;
}

.btn:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover {
  background: #6d28d9;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(148, 163, 184, 0.3);
}

.btn-secondary:hover {
  background: var(--card);
  border-color: var(--primary);
}

.btn-lg {
  padding: var(--space-md) var(--space-xl);
  font-size: 1rem;
}

.btn-sm {
  padding: var(--space-xs) var(--space-md);
  font-size: 0.75rem;
}

.btn-full {
  width: 100%;
}

/* Hero Section */
.hero {
  padding: 8rem 0 var(--space-3xl);
  background: linear-gradient(135deg, var(--bg) 0%, #1e293b 100%);
  overflow: hidden;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at center, rgba(124, 58, 237, 0.1) 0%, transparent 50%);
}

.hero-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--space-3xl);
  position: relative;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-lg);
  background: linear-gradient(135deg, var(--text) 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--muted);
  margin-bottom: var(--space-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

.hero-visual {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.dashboard-mockup {
  background: var(--card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.1);
}

.mockup-header {
  height: 3rem;
  background: rgba(148, 163, 184, 0.05);
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
  display: flex;
  align-items: center;
  padding: 0 var(--space-lg);
}

.mockup-controls {
  display: flex;
  gap: var(--space-sm);
}

.mockup-controls span {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: var(--muted);
}

.mockup-controls span:nth-child(1) {
  background: var(--danger);
}

.mockup-controls span:nth-child(2) {
  background: var(--warn);
}

.mockup-controls span:nth-child(3) {
  background: var(--success);
}

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

/* KPI Section */
.kpi-section {
  padding: var(--space-3xl) 0;
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.kpi-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(148, 163, 184, 0.1);
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
}

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

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

.kpi-header h3 {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted);
}

.kpi-period {
  font-size: 0.75rem;
  color: var(--muted);
}

.kpi-value {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
}

.kpi-number {
  font-size: 2rem;
  font-weight: 700;
  font-family: var(--font-tabular);
}

.kpi-delta {
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.125rem var(--space-sm);
  border-radius: var(--radius-sm);
}

.kpi-delta.positive {
  color: var(--success);
  background: rgba(34, 197, 94, 0.1);
}

.kpi-delta.negative {
  color: var(--danger);
  background: rgba(239, 68, 68, 0.1);
}

/* Dashboard Section */
.dashboard-section {
  padding: var(--space-3xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.section-header p {
  font-size: 1.125rem;
  color: var(--muted);
}

.dashboard-controls {
  margin-bottom: var(--space-xl);
}

.date-range-picker {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.date-tabs {
  display: flex;
  background: var(--card);
  border-radius: var(--radius-md);
  padding: 0.25rem;
  gap: 0.25rem;
}

.date-tab {
  background: none;
  border: none;
  color: var(--muted);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.date-tab.active,
.date-tab:hover {
  background: var(--primary);
  color: white;
}

.custom-date-inputs {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

.date-input {
  background: var(--card);
  border: 1px solid rgba(148, 163, 184, 0.3);
  color: var(--text);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
}

/* Charts Grid */
.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.chart-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(148, 163, 184, 0.1);
}

.chart-wide {
  grid-column: 1 / -1;
}

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

.chart-header h3 {
  font-size: 1.25rem;
  font-weight: 600;
}

.chart-subtitle {
  font-size: 0.875rem;
  color: var(--muted);
}

.chart-legend {
  display: flex;
  gap: var(--space-md);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.875rem;
}

.legend-color {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 2px;
}

.chart-container {
  position: relative;
}

.chart-container canvas {
  width: 100%;
  height: auto;
}

/* Cohort Table */
.cohort-table {
  overflow-x: auto;
}

.cohort-grid {
  display: grid;
  grid-template-columns: 120px repeat(8, 1fr);
  gap: 1px;
  background: rgba(148, 163, 184, 0.1);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.cohort-cell {
  background: var(--card);
  padding: var(--space-sm);
  text-align: center;
  font-size: 0.875rem;
  font-family: var(--font-tabular);
}

.cohort-header {
  background: rgba(148, 163, 184, 0.05);
  font-weight: 500;
}

/* Events Section */
.events-section {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(148, 163, 184, 0.1);
}

.events-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
  gap: var(--space-md);
}

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

.search-input {
  background: var(--bg);
  border: 1px solid rgba(148, 163, 184, 0.3);
  color: var(--text);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  min-width: 200px;
}

.filter-select {
  background: var(--bg);
  border: 1px solid rgba(148, 163, 184, 0.3);
  color: var(--text);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  cursor: pointer;
}

.table-container {
  overflow-x: auto;
}

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

.events-table th,
.events-table td {
  text-align: left;
  padding: var(--space-md);
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.events-table th {
  font-weight: 500;
  color: var(--muted);
  font-size: 0.875rem;
}

.events-table td {
  font-family: var(--font-tabular);
  font-size: 0.875rem;
}

/* Segment Builder */
.segment-section {
  padding: var(--space-3xl) 0;
  background: rgba(124, 58, 237, 0.02);
}

.segment-builder {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-xl);
}

.segment-controls {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(148, 163, 184, 0.1);
}

.filter-builder {
  margin: var(--space-lg) 0;
}

.filter-row {
  display: flex;
  gap: var(--space-md);
  align-items: center;
  flex-wrap: wrap;
}

.filter-input {
  background: var(--bg);
  border: 1px solid rgba(148, 163, 184, 0.3);
  color: var(--text);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  flex: 1;
  min-width: 120px;
}

.active-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin: var(--space-lg) 0;
}

.filter-chip {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  background: var(--primary);
  color: white;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: 500;
}

.filter-chip button {
  background: none;
  border: none;
  color: white;
  cursor: pointer;
  padding: 0;
  font-size: 1rem;
  line-height: 1;
}

.segment-preview {
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  padding-top: var(--space-lg);
  margin-top: var(--space-lg);
}

.segment-stats {
  display: flex;
  gap: var(--space-xl);
  margin-bottom: var(--space-lg);
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--muted);
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--font-tabular);
}

.segment-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.segment-name-input {
  background: var(--bg);
  border: 1px solid rgba(148, 163, 184, 0.3);
  color: var(--text);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  flex: 1;
  min-width: 200px;
}

.saved-segments {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(148, 163, 184, 0.1);
}

.segments-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.segment-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md);
  background: var(--bg);
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.1);
}

.segment-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.segment-title {
  font-weight: 500;
}

.segment-description {
  font-size: 0.875rem;
  color: var(--muted);
}

.segment-actions-list {
  display: flex;
  gap: var(--space-sm);
}

/* Journey Section */
.journey-section {
  padding: var(--space-3xl) 0;
}

.journey-diagram {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(148, 163, 184, 0.1);
}

/* Alerts Section */
.alerts-section {
  padding: var(--space-3xl) 0;
  background: rgba(6, 182, 212, 0.02);
}

.alert-builder {
  max-width: 800px;
  margin: 0 auto;
}

.alert-form {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(148, 163, 184, 0.1);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.form-group label {
  font-weight: 500;
  color: var(--muted);
  font-size: 0.875rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg);
  border: 1px solid rgba(148, 163, 184, 0.3);
  color: var(--text);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
}

/* Integrations Section */
.integrations-section {
  padding: var(--space-3xl) 0;
}

.integrations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.integration-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(148, 163, 184, 0.1);
  text-align: center;
  transition: all var(--transition-normal);
}

.integration-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.integration-icon {
  margin-bottom: var(--space-md);
}

.integration-card h3 {
  margin-bottom: var(--space-sm);
  font-size: 1.125rem;
}

.integration-card p {
  color: var(--muted);
  font-size: 0.875rem;
}

.integration-docs {
  text-align: center;
}

.docs-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(148, 163, 184, 0.1);
  max-width: 500px;
  margin: 0 auto;
}

/* Pricing Section */
.pricing-section {
  padding: var(--space-3xl) 0;
  background: rgba(34, 197, 94, 0.02);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-xl);
  max-width: 1000px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(148, 163, 184, 0.1);
  position: relative;
  transition: all var(--transition-normal);
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.pricing-popular {
  border: 2px solid var(--primary);
  transform: scale(1.05);
}

.pricing-badge {
  position: absolute;
  top: -0.5rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: white;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-lg);
  font-size: 0.75rem;
  font-weight: 500;
}

.pricing-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.pricing-header h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.pricing-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.price-amount {
  font-size: 3rem;
  font-weight: 700;
  font-family: var(--font-tabular);
}

.price-period {
  color: var(--muted);
  font-size: 1rem;
}

.pricing-features {
  list-style: none;
  margin-bottom: var(--space-xl);
}

.pricing-features li {
  padding: var(--space-sm) 0;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.pricing-features li:before {
  content: attr(data-icon);
  width: 1rem;
  text-align: center;
}

/* Testimonials Section */
.testimonials-section {
  padding: var(--space-3xl) 0;
}

.testimonials-carousel {
  position: relative;
  max-width: 800px;
  margin: 0 auto var(--space-xl);
  overflow: hidden;
}

.testimonial-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(148, 163, 184, 0.1);
  opacity: 0;
  transform: translateX(100%);
  transition: all var(--transition-slow);
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
}

.testimonial-card.active {
  opacity: 1;
  transform: translateX(0);
  position: relative;
}

.testimonial-content {
  margin-bottom: var(--space-lg);
}

.testimonial-rating {
  color: var(--warn);
  font-size: 1.25rem;
  margin-bottom: var(--space-md);
}

.testimonial-content p {
  font-size: 1.125rem;
  line-height: 1.6;
  font-style: italic;
}

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

.author-avatar {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  overflow: hidden;
}

.author-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.author-name {
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.author-role {
  color: var(--muted);
  font-size: 0.875rem;
}

.carousel-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-lg);
}

.carousel-btn {
  background: var(--card);
  border: 1px solid rgba(148, 163, 184, 0.3);
  color: var(--text);
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.25rem;
  transition: all var(--transition-fast);
}

.carousel-btn:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.carousel-dots {
  display: flex;
  gap: var(--space-sm);
}

.dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--muted);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.dot.active {
  background: var(--primary);
}

/* FAQ Section */
.faq-section {
  padding: var(--space-3xl) 0;
  background: rgba(239, 68, 68, 0.02);
}

.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--card);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-md);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(148, 163, 184, 0.1);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: var(--space-xl);
  text-align: left;
  color: var(--text);
  font-size: 1.125rem;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color var(--transition-fast);
}

.faq-question:hover {
  background: rgba(148, 163, 184, 0.05);
}

.faq-icon {
  transition: transform var(--transition-fast);
  color: var(--primary);
}

.faq-question[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 var(--space-xl) var(--space-xl);
  color: var(--muted);
  line-height: 1.6;
  display: none;
}

.faq-question[aria-expanded="true"] + .faq-answer {
  display: block;
}

/* Contact Section */
.contact-section {
  padding: var(--space-3xl) 0;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  max-width: 1000px;
  margin: 0 auto;
}

.contact-info h2 {
  font-size: 2rem;
  margin-bottom: var(--space-md);
}

.contact-info p {
  color: var(--muted);
  margin-bottom: var(--space-xl);
  font-size: 1.125rem;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.contact-item strong {
  color: var(--text);
  font-size: 0.875rem;
}

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

.contact-item a:hover {
  color: var(--accent);
}

.contact-form {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(148, 163, 184, 0.1);
}

.form-error {
  color: var(--danger);
  font-size: 0.875rem;
  margin-top: var(--space-xs);
  display: none;
}

.form-error.show {
  display: block;
}

/* Footer */
.footer {
  background: var(--card);
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer-brand p {
  color: var(--muted);
  margin-top: var(--space-md);
}

.footer-column h4 {
  margin-bottom: var(--space-md);
  font-weight: 600;
}

.footer-column ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-column a {
  color: var(--muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-column a:hover {
  color: var(--primary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(148, 163, 184, 0.1);
}

.footer-bottom p {
  color: var(--muted);
  font-size: 0.875rem;
}

.footer-social {
  display: flex;
  gap: var(--space-md);
}

.footer-social a {
  color: var(--muted);
  transition: color var(--transition-fast);
}

.footer-social a:hover {
  color: var(--primary);
}

/* Toast Container */
.toast-container {
  position: fixed;
  top: 5rem;
  right: var(--space-lg);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.toast {
  background: var(--card);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(148, 163, 184, 0.1);
  min-width: 300px;
  transform: translateX(100%);
  transition: all var(--transition-normal);
}

.toast.show {
  transform: translateX(0);
}

.toast.success {
  border-left: 4px solid var(--success);
}

.toast.error {
  border-left: 4px solid var(--danger);
}

.toast.warning {
  border-left: 4px solid var(--warn);
}

.toast-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.toast-message {
  font-size: 0.875rem;
}

.toast-close {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 0;
  margin-left: var(--space-md);
  font-size: 1.25rem;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(2rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.animate-fadeInUp {
  animation: fadeInUp 0.6s ease-out;
}

.animate-pulse {
  animation: pulse 2s infinite;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .charts-grid {
    grid-template-columns: 1fr;
  }

  .segment-builder {
    grid-template-columns: 1fr;
  }

  .contact-content {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .hero {
    padding: 6rem 0 var(--space-xl);
  }

  .hero-actions {
    flex-direction: column;
  }

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

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

  .integrations-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }

  .events-header {
    flex-direction: column;
    align-items: stretch;
  }

  .events-controls {
    flex-wrap: wrap;
  }

  .filter-row {
    flex-direction: column;
  }

  .segment-actions {
    flex-direction: column;
  }

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

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  .toast-container {
    right: var(--space-sm);
    left: var(--space-sm);
  }

  .toast {
    min-width: auto;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-sm);
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .section-header h2 {
    font-size: 2rem;
  }

  .chart-card,
  .events-section,
  .segment-controls,
  .saved-segments {
    padding: var(--space-lg);
  }

  .custom-date-inputs {
    flex-direction: column;
    width: 100%;
  }

  .date-input {
    width: 100%;
  }
}

/* Print styles */
@media print {
  .header,
  .nav-toggle,
  .theme-toggle,
  .btn,
  .toast-container {
    display: none !important;
  }

  body {
    background: white !important;
    color: black !important;
  }

  .hero,
  .dashboard-section,
  .segment-section,
  .pricing-section {
    break-inside: avoid;
  }
}