/*
 * DividendETFs.net - Ultra-Fast Static CSS
 * Optimized for PageSpeed 95+
 */

/* CSS Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --secondary: #10b981;
  --text: #1f2937;
  --text-light: #6b7280;
  --bg: #ffffff;
  --bg-gray: #f9fafb;
  --border: #e5e7eb;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--text);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: 1rem;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-wide {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.header {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
}

.logo:hover {
  text-decoration: none;
  opacity: 0.9;
}

.nav {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav a {
  color: var(--text);
  font-weight: 500;
  text-decoration: none;
}

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

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 4rem 0;
  text-align: center;
}

.hero h1 {
  color: white;
  font-size: 3rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.25rem;
  opacity: 0.95;
  max-width: 700px;
  margin: 0 auto 2rem;
}

/* Search Bar */
.search-container {
  max-width: 600px;
  margin: 0 auto;
  position: relative;
}

.search-bar {
  width: 100%;
  padding: 1rem 1.5rem;
  font-size: 1.125rem;
  border: 2px solid var(--border);
  border-radius: 50px;
  outline: none;
  transition: all 0.3s;
}

.search-bar:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-results {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: white;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-top: 0.5rem;
  max-height: 400px;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  display: none;
}

.search-results.active {
  display: block;
}

.search-result-item {
  padding: 1rem;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.2s;
}

.search-result-item:hover {
  background: var(--bg-gray);
}

.search-result-item:last-child {
  border-bottom: none;
}

.search-ticker {
  font-weight: 700;
  color: var(--primary);
  font-size: 1.125rem;
}

.search-name {
  color: var(--text-light);
  font-size: 0.875rem;
}

.search-yield {
  float: right;
  font-weight: 600;
  color: var(--success);
}

/* Grid */
.grid {
  display: grid;
  gap: 1.5rem;
  margin: 2rem 0;
}

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

/* Cards */
.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: all 0.3s;
}

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

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

.card-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  margin: 0;
}

.card-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 50px;
  background: var(--primary);
  color: white;
}

.card-body {
  margin: 1rem 0;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
}

th, td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  background: var(--bg-gray);
  font-weight: 600;
  color: var(--text);
}

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

.table-ticker {
  font-weight: 700;
  color: var(--primary);
  font-size: 1.125rem;
}

.table-yield {
  font-weight: 600;
  color: var(--success);
}

.table-expense {
  font-weight: 600;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 50px;
}

.badge-primary { background: var(--primary); color: white; }
.badge-success { background: var(--success); color: white; }
.badge-warning { background: var(--warning); color: white; }
.badge-gray { background: var(--bg-gray); color: var(--text); }

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: all 0.3s;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  text-decoration: none;
}

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

.btn-secondary:hover {
  background: #059669;
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: white;
  text-decoration: none;
}

/* Stats */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.stat-card {
  background: var(--bg-gray);
  border-radius: 8px;
  padding: 1.5rem;
  text-align: center;
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Section */
.section {
  padding: 4rem 0;
}

.section-title {
  font-size: 2rem;
  margin-bottom: 2rem;
  text-align: center;
}

.section-gray {
  background: var(--bg-gray);
}

/* Footer */
.footer {
  background: var(--text);
  color: white;
  padding: 3rem 0 1.5rem;
  margin-top: 4rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h4 {
  color: white;
  margin-bottom: 1rem;
}

.footer-section a {
  color: #d1d5db;
  display: block;
  margin-bottom: 0.5rem;
}

.footer-section a:hover {
  color: white;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid #374151;
  color: #9ca3af;
  font-size: 0.875rem;
}

/* Comparison Table */
.comparison-table {
  width: 100%;
  margin: 2rem 0;
}

.comparison-table th {
  background: var(--primary);
  color: white;
}

.comparison-table .ticker-col {
  font-weight: 700;
  font-size: 1.25rem;
}

.comparison-winner {
  background: #d1fae5 !important;
  font-weight: 700;
}

/* Dividend History Chart */
.dividend-chart {
  margin: 2rem 0;
  padding: 2rem;
  background: var(--bg-gray);
  border-radius: 8px;
}

/* Screener */
.screener-filters {
  background: var(--bg-gray);
  padding: 2rem;
  border-radius: 8px;
  margin-bottom: 2rem;
}

.filter-group {
  margin-bottom: 1.5rem;
}

.filter-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.filter-group input,
.filter-group select {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 1rem;
}

/* FAQ */
.faq-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.faq-question {
  font-weight: 700;
  font-size: 1.125rem;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.faq-answer {
  color: var(--text-light);
  line-height: 1.7;
}

/* Responsive */
@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }

  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1rem; }

  .nav {
    flex-direction: column;
    gap: 0.5rem;
  }

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

  .card-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .search-yield {
    float: none;
    display: block;
    margin-top: 0.5rem;
  }

  table {
    font-size: 0.875rem;
  }

  th, td {
    padding: 0.5rem;
  }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.hidden { display: none; }

/* Performance: Reduce Paint */
.card, .btn, .search-bar {
  will-change: transform;
}

/* Print Styles */
@media print {
  .header, .footer, .search-container, .btn { display: none; }
}