:root {
  --bg: #0b0c15;
  --bg-elevated: #12131f;
  --bg-card: #181a29;
  --bg-hover: #22243a;
  --primary: #7c3aed;
  --primary-light: #8b5cf6;
  --accent: #06b6d4;
  --text: #f3f4f6;
  --text-muted: #9ca3af;
  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --radius: 14px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 12, 21, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 800;
  font-size: 1.4rem;
}

.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 0.9rem;
}

.logo-text span {
  color: var(--accent);
}

.main-nav {
  display: flex;
  gap: 28px;
}

.main-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s;
}

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

.hero {
  position: relative;
  padding: 110px 0 90px;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -120px;
  right: -120px;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.25), transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  max-width: 700px;
}

.hero h1 {
  font-size: clamp(2.2rem, 6vw, 3.6rem);
  line-height: 1.1;
  margin: 0 0 20px;
  font-weight: 800;
  background: linear-gradient(90deg, #fff, #c4b5fd);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin: 0 0 32px;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  box-shadow: 0 6px 20px rgba(124, 58, 237, 0.35);
}

.btn-primary:hover {
  box-shadow: 0 8px 26px rgba(124, 58, 237, 0.5);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--bg-hover);
}

.btn-whatsapp {
  background: #25d366;
  color: #fff;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.35);
}

.btn-whatsapp:hover {
  background: #1ebe5b;
  box-shadow: 0 8px 26px rgba(37, 211, 102, 0.5);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  padding: 8px 0;
}

.btn-ghost:hover {
  color: var(--text);
}

.stats-section {
  padding-bottom: 70px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 18px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: transform 0.2s, border-color 0.2s;
}

.stat-card:hover {
  transform: translateY(-3px);
  border-color: rgba(124, 58, 237, 0.4);
}

.stat-value {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(90deg, var(--accent), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
}

.channels-section {
  padding: 60px 0 100px;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
}

.section-header {
  margin-bottom: 30px;
}

.section-header h2 {
  font-size: 1.9rem;
  margin: 0 0 8px;
}

.section-header p {
  color: var(--text-muted);
  margin: 0;
}

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

.search-box {
  position: relative;
  flex: 1 1 280px;
  max-width: 420px;
}

.search-box svg {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-box input {
  width: 100%;
  padding: 12px 16px 12px 44px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-box input:focus {
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}

.filter-tabs {
  display: flex;
  gap: 8px;
  background: var(--bg-card);
  padding: 6px;
  border-radius: 10px;
  border: 1px solid var(--border);
}

.tab {
  padding: 8px 16px;
  border-radius: 8px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.tab:hover {
  color: var(--text);
}

.tab.active {
  background: var(--primary);
  color: #fff;
}

.group-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 18px;
}

.group-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  cursor: pointer;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.group-card:hover {
  transform: translateY(-4px);
  border-color: rgba(124, 58, 237, 0.45);
  box-shadow: var(--shadow);
}

.group-icon {
  font-size: 1.8rem;
  line-height: 1;
  flex-shrink: 0;
}

.group-flag {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
}

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

.group-name {
  font-weight: 600;
  font-size: 0.95rem;
  margin: 0 0 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.group-meta {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.channel-panel {
  animation: fadeIn 0.25s ease;
}

.channel-panel.hidden {
  display: none;
}

.panel-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.panel-header h3 {
  margin: 0;
  font-size: 1.4rem;
  flex: 1;
}

.panel-count {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
}

.panel-search {
  max-width: 100%;
  margin-bottom: 20px;
}

.channel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}

.channel-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: background 0.15s, border-color 0.15s;
}

.channel-card:hover {
  background: var(--bg-hover);
  border-color: rgba(6, 182, 212, 0.3);
}

.channel-logo {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  object-fit: contain;
  background: var(--bg-elevated);
  flex-shrink: 0;
}

.channel-logo-placeholder {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
  flex-shrink: 0;
}

.channel-name {
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.contact-section {
  padding: 80px 0;
}

.contact-card {
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.12), rgba(6, 182, 212, 0.08));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 50px;
  text-align: center;
}

.contact-card h2 {
  margin: 0 0 10px;
  font-size: 1.9rem;
}

.contact-card p {
  color: var(--text-muted);
  margin: 0 0 24px;
}

.contact-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 200;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25d366;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s;
}

.whatsapp-float:hover {
  transform: scale(1.08);
  box-shadow: 0 8px 26px rgba(37, 211, 102, 0.55);
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 30px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-note {
  margin-top: 6px;
  font-size: 0.8rem;
}

.loading .group-grid,
.loading .stats-grid {
  opacity: 0.6;
  pointer-events: none;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 640px) {
  .main-nav {
    display: none;
  }

  .hero {
    padding: 70px 0 60px;
  }

  .browser-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .search-box {
    max-width: 100%;
  }

  .filter-tabs {
    justify-content: center;
  }

  .contact-card {
    padding: 32px 24px;
  }
}