* { box-sizing: border-box; font-family: 'Noto Sans Bengali', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; }
html { scroll-behavior: smooth; }
:root {
  --primary: #3b82f6;
  --primary-dark: #1d4ed8;
  --secondary: #06b6d4;
  --accent: #8b5cf6;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --bg-light: #f0f9ff;
  --bg-white: #ffffff;
  --card: #ffffff;
  --text-dark: #0f172a;
  --text-muted: #64748b;
  --border-color: #dbeafe;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
  --shadow-md: 0 8px 16px rgba(59,130,246,.15);
  --shadow-lg: 0 20px 40px rgba(59,130,246,.2);
  --shadow-xl: 0 25px 50px rgba(59,130,246,.25);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --transition: all 0.4s cubic-bezier(0.23, 1, 0.320, 1);
}
body.dark {
  --bg-light: #0a0e27;
  --bg-white: #1a1f3a;
  --card: #1a1f3a;
  --text-dark: #f1f5f9;
  --text-muted: #cbd5e1;
  --border-color: #2d3e6f;
}
body {
  margin: 0;
  padding: 0;
  background: var(--bg-light);
  color: var(--text-dark);
  font-family: 'Noto Sans Bengali', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  scrollbar-width: thin;
  scrollbar-color: var(--primary) var(--border-color);
}
/* Modern scrollbar for Webkit browsers */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-light);
}
::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 5px;
  transition: var(--transition);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}
body.dark::-webkit-scrollbar-track {
  background: var(--bg-white);
}
body.dark::-webkit-scrollbar-thumb {
  background: var(--accent);
}
body.dark::-webkit-scrollbar-thumb:hover {
  background: #00d4ff;
}
.header {
  background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 45%, #0e7490 80%, #6d28d9 100%);
  color: #fff;
  padding: 24px 16px;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow-lg);
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: flex-start;
  align-items: center;
}
.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo-icon {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}
.header h1 {
  font-size: 24px;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.5px;
}
.header-subtitle {
  font-size: 12px;
  opacity: .9;
  margin: 4px 0 0;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}
.lang-btn, #themeToggle {
  background: rgba(255,255,255,.2);
  border: none;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.lang-btn:hover, #themeToggle:hover {
  background: rgba(255,255,255,.3);
  transform: scale(1.1);
}
#themeToggle:hover {
  transform: rotate(20deg) scale(1.1);
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 16px;
}
.search-section {
  background: linear-gradient(135deg, var(--card) 0%, rgba(59,130,246,.02) 100%);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 32px;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 60px;
  z-index: 40;
  backdrop-filter: blur(10px);
}
.search-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-dark);
  margin: 0 0 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.search-title i {
  color: var(--primary);
  font-size: 18px;
}
.search-input-group {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 12px;
}
.search-input-wrapper {
  position: relative;
}
.select-from-wrapper,
.select-to-wrapper {
  border-left: 4px solid var(--primary);
  background: linear-gradient(135deg, rgba(37,99,235,.05) 0%, transparent 100%);
  transition: var(--transition);
}
.select-from-wrapper:hover,
.select-to-wrapper:hover {
  background: linear-gradient(135deg, rgba(37,99,235,.1) 0%, transparent 100%);
}
.select-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--primary);
  font-size: 16px;
  pointer-events: none;
  z-index: 1;
}
.select-from-wrapper select,
.select-to-wrapper select {
  padding-left: 44px;
  padding-right: 44px;
}
select#fromSelect {
  padding-left: 40px;
}
select#toSelect {
  padding-left: 40px;
}
.search-input-wrapper input,
.search-input-wrapper select {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dark);
  background: var(--card);
  transition: var(--transition);
  font-family: inherit;
  appearance: none;
}
.search-input-wrapper input::placeholder {
  color: var(--text-muted);
}
.search-input-wrapper input:focus,
.search-input-wrapper select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(37,99,235,.15);
}
.search-input-wrapper select {
  cursor: pointer;
  padding-right: 40px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 20 20' fill='none' stroke='%232563eb' stroke-width='2'%3E%3Cpolyline points='6 8 10 12 14 8'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 18px;
  padding-right: 44px;
}
body.dark .search-input-wrapper select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 20 20' fill='none' stroke='%23f1f5f9' stroke-width='2'%3E%3Cpolyline points='6 8 10 12 14 8'%3E%3C/polyline%3E%3C/svg%3E");
}
body.dark .select-from-wrapper,
body.dark .select-to-wrapper {
  background: linear-gradient(135deg, rgba(241,245,249,.08) 0%, transparent 100%);
  border-left-color: var(--accent);
}
body.dark .select-from-wrapper:hover,
body.dark .select-to-wrapper:hover {
  background: linear-gradient(135deg, rgba(241,245,249,.12) 0%, transparent 100%);
}
body.dark .select-icon {
  color: var(--accent);
}
.search-input-wrapper select:hover {
  border-color: var(--primary);
  box-shadow: 0 2px 8px rgba(37,99,235,.15);
}
.search-input-wrapper select option {
  padding: 10px;
  background: var(--card);
  color: var(--text-dark);
}
.select-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}
.select-group .search-input-wrapper {
  flex: 1;
  min-width: 140px;
  max-width: 280px;
}
.swap-btn {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: var(--primary);
  border: none;
  border-radius: var(--radius-md);
  color: #fff;
  cursor: pointer;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  margin-top: 0;
}
.swap-btn:hover {
  background: var(--primary-dark);
  transform: rotate(180deg) scale(1.05);
  box-shadow: var(--shadow-md);
}
body.dark .swap-btn {
  background: var(--accent);
}
body.dark .swap-btn:hover {
  background: #00d4ff;
}
body.dark .bus-card {
  background: linear-gradient(135deg, rgba(139,92,246,.08) 0%, rgba(6,182,212,.02) 100%);
  border-color: rgba(139,92,246,.3);
}
body.dark .bus-card:hover {
  background: linear-gradient(135deg, rgba(139,92,246,.15) 0%, rgba(6,182,212,.08) 100%);
  border-color: var(--accent);
  box-shadow: 0 20px 40px rgba(139,92,246,.2);
}
body.dark .bus-card::before {
  background: linear-gradient(90deg, transparent, rgba(139,92,246,.2), transparent);
}
body.dark .results-count {
  background-color: rgba(139,92,246,.12);
  border-color: rgba(139,92,246,.3);
}
body.dark .highlight {
  background: linear-gradient(135deg, var(--accent), #06b6d4);
  box-shadow: 0 2px 8px rgba(139,92,246,.4);
}
.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.results-count {
  font-size: 18px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background-color: rgba(59,130,246,.08);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  width: fit-content;
}
.bus-card {
  background: linear-gradient(135deg, var(--card) 0%, rgba(59,130,246,.02) 100%);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 16px;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.bus-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.3), transparent);
  transition: left 0.5s ease;
  pointer-events: none;
}
.bus-card:hover::before {
  left: 100%;
}
.bus-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-xl);
  transform: translateY(-8px);
  background: linear-gradient(135deg, #f0f9ff 0%, rgba(59,130,246,.05) 100%);
}
.bus-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
}
.bus-name-wrapper {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
}
.bus-icon {
  color: var(--primary);
  font-size: 20px;
}
.bus-name {
  font-size: 18px;
  font-weight: 800;
  margin: 0;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}
.bus-type-badge {
  font-size: 12px;
  font-weight: 800;
  padding: 8px 16px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  white-space: nowrap;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 12px rgba(59,130,246,.3);
  text-transform: uppercase;
}
.bus-type-badge.brtc {
  background: linear-gradient(135deg, var(--success), #059669);
  box-shadow: 0 4px 12px rgba(16,185,129,.3);
}
.bus-route {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-muted);
  word-break: break-word;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.route-icon {
  color: var(--secondary);
  font-size: 14px;
  margin-top: 2px;
  min-width: 14px;
}
.route-stations {
  flex: 1;
}
.route-station {
  display: inline-block;
  padding: 2px 0;
}
.highlight {
  color: #fff;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  padding: 4px 8px;
  border-radius: 6px;
  margin: 0 4px;
  box-shadow: 0 2px 8px rgba(59,130,246,.3);
}
.empty-state {
  text-align: center;
  padding: 60px 20px;
}
.empty-icon {
  font-size: 48px;
  color: var(--primary);
  margin-bottom: 16px;
}
.empty-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 8px;
}
.empty-text {
  color: var(--text-muted);
  font-size: 14px;
}
.footer {
  margin-top: 48px;
  background: linear-gradient(135deg, var(--primary-dark) 0%, #1e3a8a 60%, #0f172a 100%);
  color: #e2e8f0;
  padding: 0;
  border-top: none;
}
body.dark .footer {
  background: linear-gradient(135deg, #0f172a 0%, #1a1f3a 100%);
}
.footer-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 32px 24px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}
.footer-logo {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: rgba(255,255,255,.15);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: #fff;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(0,0,0,.25);
}
.footer-brand-name {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  letter-spacing: .3px;
}
.footer-brand-tagline {
  font-size: 12px;
  color: #93c5fd;
  margin-top: 2px;
}
.footer-divider {
  width: 100%;
  height: 1px;
  background: rgba(255,255,255,.12);
  border-radius: 1px;
}
.footer-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px 20px;
  font-size: 12.5px;
  color: #94a3b8;
}
.footer-copy i {
  font-size: 11px;
  margin-right: 3px;
  color: #60a5fa;
}
.footer-dev a {
  color: #93c5fd;
  text-decoration: none;
  font-weight: 600;
  transition: color .2s;
}
.footer-dev a:hover {
  color: #fff;
  text-decoration: underline;
}
.footer-heart {
  display: inline-block;
  color: #f87171;
  animation: heartbeat 1.4s ease-in-out infinite;
}
@keyframes heartbeat {
  0%, 100% { transform: scale(1); }
  14% { transform: scale(1.25); }
  28% { transform: scale(1); }
  42% { transform: scale(1.2); }
  56% { transform: scale(1); }
}
@media(max-width: 768px) {
  .footer-inner { padding: 24px 16px 18px; gap: 14px; }
  .footer-brand-name { font-size: 15px; }
  .header { padding: 16px 12px; }
  .header h1 { font-size: 20px; }
  .logo-icon { width: 36px; height: 36px; font-size: 16px; }
  .lang-btn, #themeToggle { width: 36px; height: 36px; font-size: 13px; }
  .container { padding: 16px 12px; }
  .search-section { padding: 18px; top: 56px; }
  .search-title { font-size: 14px; margin-bottom: 12px; }
  .select-group { gap: 10px; flex-wrap: wrap; }
  .select-group .search-input-wrapper { flex: 0 1 calc(50% - 32px); min-width: 130px; }
  .swap-btn { width: 40px; height: 40px; font-size: 14px; }
  .bus-card { padding: 16px; margin-bottom: 12px; }
  .bus-name { font-size: 15px; }
  .bus-route { font-size: 12px; }
}
@media(max-width: 640px) {
  .header-subtitle { display: none; }
  .header-left { gap: 8px; }
  .search-input-group { gap: 10px; }
  .select-group { gap: 8px; flex-direction: column; }
  .select-group .search-input-wrapper { flex: 1; max-width: 100%; min-width: 100%; }
  .swap-btn { width: 100%; margin: 0; transform: rotate(90deg); }
  .results-header { flex-direction: column; align-items: flex-start; gap: 8px; }
  .search-section { padding: 16px; border-radius: 12px; }
}
@media(max-width: 480px) {
  .header h1 { font-size: 18px; }
  .logo-icon, .lang-btn, #themeToggle { width: 32px; height: 32px; font-size: 12px; }
  .container { padding: 12px 8px; }
  .search-section { padding: 14px; top: 52px; margin-bottom: 20px; }
  .search-title { font-size: 13px; }
  .bus-card { padding: 14px; }
  .bus-header { flex-direction: column; gap: 8px; }
  .bus-name { font-size: 14px; }
  .bus-type-badge { padding: 4px 10px; font-size: 10px; }
  .bus-name-wrapper { flex-direction: column; }
}