/* Modern Design System & Variables */
:root {
  /* Common tokens */
  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --border-radius-lg: 20px;
  --border-radius-md: 12px;
  --border-radius-sm: 8px;
  
  /* Light Theme variables */
  --bg-app: #f4f6fa;
  --text-main: #1e293b;
  --text-muted: #64748b;
  
  --glass-bg: rgba(255, 255, 255, 0.45);
  --glass-border: rgba(255, 255, 255, 0.5);
  --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.06);
  --glass-shadow-hover: 0 16px 48px 0 rgba(31, 38, 135, 0.12);
  
  --card-bg: rgba(255, 255, 255, 0.6);
  --card-border: rgba(255, 255, 255, 0.65);
  
  --accent: #3b82f6;
  --accent-light: #eff6ff;
  --accent-gradient: linear-gradient(135deg, #2563eb, #7c3aed);
  
  --badge-stocks: #e0f2fe;
  --badge-stocks-text: #0369a1;
  --badge-forex: #f0fdf4;
  --badge-forex-text: #15803d;
  --badge-crypto: #fffbeb;
  --badge-crypto-text: #b45309;
  --badge-finance: #f5f3ff;
  --badge-finance-text: #6d28d9;
}

[data-theme="dark"] {
  /* Dark Theme variables */
  --bg-app: #090d16;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  
  --glass-bg: rgba(15, 23, 42, 0.55);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --glass-shadow-hover: 0 16px 48px 0 rgba(0, 0, 0, 0.5);
  
  --card-bg: rgba(15, 23, 42, 0.45);
  --card-border: rgba(255, 255, 255, 0.05);
  
  --accent: #60a5fa;
  --accent-light: rgba(96, 165, 250, 0.1);
  --accent-gradient: linear-gradient(135deg, #60a5fa, #a78bfa);
  
  --badge-stocks: rgba(14, 165, 233, 0.15);
  --badge-stocks-text: #38bdf8;
  --badge-forex: rgba(34, 197, 94, 0.15);
  --badge-forex-text: #4ade80;
  --badge-crypto: rgba(245, 158, 11, 0.15);
  --badge-crypto-text: #fbbf24;
  --badge-finance: rgba(139, 92, 246, 0.15);
  --badge-finance-text: #a78bfa;
}

/* Reset & Basic Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-app);
  color: var(--text-main);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  transition: background-color 0.4s ease, color 0.4s ease;
}

/* Background Animated Blobs */
.bg-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  z-index: -1;
  opacity: 0.35;
  mix-blend-mode: multiply;
  pointer-events: none;
  animation: float 20s infinite alternate;
}

[data-theme="dark"] .bg-blob {
  opacity: 0.2;
}

.blob-1 {
  width: 400px;
  height: 400px;
  background: #3b82f6;
  top: -100px;
  left: -100px;
}

.blob-2 {
  width: 500px;
  height: 500px;
  background: #a855f7;
  bottom: 10%;
  right: -100px;
  animation-delay: -5s;
}

.blob-3 {
  width: 300px;
  height: 300px;
  background: #ec4899;
  top: 40%;
  left: 20%;
  animation-delay: -10s;
}

@keyframes float {
  0% {
    transform: translate(0, 0) scale(1) rotate(0deg);
  }
  33% {
    transform: translate(50px, -30px) scale(1.1) rotate(120deg);
  }
  66% {
    transform: translate(-30px, 50px) scale(0.9) rotate(240deg);
  }
  100% {
    transform: translate(0, 0) scale(1) rotate(360deg);
  }
}

/* Layout Container */
.app-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header Styles */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 3rem;
  padding: 1.5rem 2rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  backdrop-filter: blur(16px);
  box-shadow: var(--glass-shadow);
  transition: var(--transition-smooth);
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo-emoji {
  font-size: 2.5rem;
}

.logo-text h1 {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-text .subtitle {
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
}

/* Theme Toggle Button */
.theme-btn {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  transition: var(--transition-smooth);
}

.theme-btn:hover {
  transform: scale(1.08) rotate(15deg);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
}

.theme-icon {
  font-size: 1.25rem;
}

[data-theme="dark"] .icon-sun {
  display: block;
}
[data-theme="dark"] .icon-moon {
  display: none;
}
body:not([data-theme="dark"]) .icon-sun {
  display: none;
}
body:not([data-theme="dark"]) .icon-moon {
  display: block;
}

/* Controls Section (Search + Tags) */
.controls-section {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

/* Search Bar */
.search-wrapper {
  position: relative;
  width: 100%;
}

.search-icon {
  position: absolute;
  left: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.2rem;
  color: var(--text-muted);
  pointer-events: none;
}

.search-wrapper input {
  width: 100%;
  padding: 1.25rem 3.5rem 1.25rem 3.5rem;
  font-size: 1.05rem;
  font-family: inherit;
  font-weight: 500;
  color: var(--text-main);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  box-shadow: var(--glass-shadow);
  backdrop-filter: blur(12px);
  outline: none;
  transition: var(--transition-smooth);
}

.search-wrapper input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light), var(--glass-shadow-hover);
}

.clear-btn {
  position: absolute;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.1rem;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-smooth);
}

.search-wrapper input:valid ~ .clear-btn,
.search-wrapper input:not(:placeholder-shown) ~ .clear-btn {
  opacity: 1;
  pointer-events: auto;
}

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

/* Filter Tag Buttons */
.filter-wrapper {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.filter-tag {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  padding: 0.75rem 1.5rem;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 50px;
  cursor: pointer;
  backdrop-filter: blur(8px);
  box-shadow: var(--glass-shadow);
  transition: var(--transition-smooth);
}

.filter-tag:hover {
  transform: translateY(-2px);
  background: var(--card-bg);
  border-color: var(--accent);
}

.filter-tag.active {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.4);
}

.results-meta {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  padding-left: 0.25rem;
}

/* Grid Layout */
.grid-section {
  flex-grow: 1;
}

.channel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
  animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Card Styling */
.channel-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  box-shadow: var(--glass-shadow);
  backdrop-filter: blur(12px) saturate(180%);
  transition: var(--transition-smooth);
}

.channel-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--glass-shadow-hover);
  border-color: var(--accent);
}

/* Card Header */
.card-header {
  display: flex;
  gap: 1.25rem;
  align-items: center;
}

.avatar-wrapper {
  position: relative;
  width: 70px;
  height: 70px;
  flex-shrink: 0;
  border-radius: 50%;
  padding: 3px;
  background: var(--accent-gradient);
}

.avatar-img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--bg-app);
}

.header-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 0; /* allows text truncation */
}

.channel-name {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.3;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.channel-handle {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Stats Section */
.stats-container {
  display: flex;
  gap: 0.75rem;
}

.stat-badge {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 0.5rem 0.75rem;
  border-radius: var(--border-radius-sm);
  font-size: 0.85rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.stat-emoji {
  font-size: 0.95rem;
}

/* Topic Category Badge */
.category-badge {
  align-self: flex-start;
  padding: 0.4rem 0.85rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-stocks { background-color: var(--badge-stocks); color: var(--badge-stocks-text); }
.badge-forex { background-color: var(--badge-forex); color: var(--badge-forex-text); }
.badge-crypto { background-color: var(--badge-crypto); color: var(--badge-crypto-text); }
.badge-finance { background-color: var(--badge-finance); color: var(--badge-finance-text); }

/* Channel Description (Expandable Drawer) */
.desc-section {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.desc-text {
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.desc-section.expanded .desc-text {
  display: block;
  -webkit-line-clamp: unset;
  overflow: visible;
}

.expand-btn {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
  align-self: flex-start;
  padding: 0.25rem 0;
  display: none; /* JS will toggle block if description is long */
}

.expand-btn:hover {
  text-decoration: underline;
}

/* Action Section / Visit Channel */
.channel-action {
  margin-top: auto;
  border-top: 1px solid var(--glass-border);
  padding-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.visit-btn {
  width: 100%;
  padding: 0.85rem;
  text-align: center;
  background: var(--accent-gradient);
  color: #ffffff;
  text-decoration: none;
  font-weight: 700;
  border-radius: var(--border-radius-md);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: var(--transition-smooth);
}

.visit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(59, 130, 246, 0.4);
}

/* Social Icons Container */
.social-links {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.social-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 1.05rem;
  color: #ffffff;
  transition: var(--transition-smooth);
}

.social-icon:hover {
  transform: scale(1.1) translateY(-2px);
}

/* Branded Social platforms */
.soc-facebook { background-color: #1877f2; }
.soc-telegram { background-color: #0088cc; }
.soc-whatsapp { background-color: #25d366; }
.soc-instagram { background-color: #e1306c; }
.soc-twitter_x { background-color: #111111; }
.soc-linkedin { background-color: #0a66c2; }
.soc-tiktok { background-color: #010101; }
.soc-website_other { background-color: var(--accent); }

/* Empty state */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 5rem 2rem;
  text-align: center;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  backdrop-filter: blur(12px);
  box-shadow: var(--glass-shadow);
}

.empty-emoji {
  font-size: 3.5rem;
  margin-bottom: 1rem;
}

.empty-state h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.empty-state p {
  color: var(--text-muted);
}

/* Footer */
.app-footer {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--glass-border);
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-muted);
}

}

/* FAQ Section (Accordion) styling */
.faq-section {
  margin-top: 5rem;
  padding: 2.5rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  backdrop-filter: blur(12px);
  box-shadow: var(--glass-shadow);
}

.faq-title {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 2rem;
  text-align: center;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  transition: var(--transition-smooth);
}

.faq-item[open] {
  border-color: var(--accent);
  box-shadow: 0 4px 20px rgba(0,0,0,0.03);
}

summary.faq-question {
  padding: 1.25rem 1.5rem;
  font-weight: 700;
  font-size: 1.05rem;
  cursor: pointer;
  list-style: none; /* Hide default browser marker */
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  transition: var(--transition-smooth);
}

/* Custom indicator icon */
summary.faq-question::after {
  content: '➔';
  font-size: 0.9rem;
  color: var(--accent);
  transition: transform 0.3s ease;
}

.faq-item[open] summary.faq-question::after {
  transform: rotate(90deg);
}

summary.faq-question:hover {
  background: var(--glass-border);
  color: var(--accent);
}

/* Hide default marker for webkit */
summary.faq-question::-webkit-details-marker {
  display: none;
}

.faq-answer {
  padding: 0 1.5rem 1.5rem 1.5rem;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-muted);
  border-top: 1px solid var(--glass-border);
  padding-top: 1rem;
  animation: slideDown 0.3s ease-out;
}

.faq-answer strong {
  color: var(--text-main);
}

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

/* Responsive tweaks */
@media (max-width: 768px) {
  .app-container {
    padding: 1rem;
  }
  .app-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.25rem;
  }
  .theme-btn {
    align-self: flex-end;
  }
  .channel-grid {
    grid-template-columns: 1fr;
  }
}