@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #fefcf8;
  --surface: #ffffff;
  --surface-hover: #faf8f5;
  --text: #1c1917;
  --text-light: #78716c;
  --border: #e7e5e4;
  --accent: #ea580c;
  --accent-hover: #c2410c;
  --accent-soft: #fff7ed;
  --success: #16a34a;
  --success-bg: #f0fdf4;
  --warning: #d97706;
  --warning-bg: #fffbeb;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
}

html {
  -webkit-text-size-adjust: 100%;
  touch-action: manipulation;
}

body {
  font-family: 'Space Grotesk', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  padding: 24px 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.wrap {
  max-width: 640px;
  margin: 0 auto;
}

header {
  margin-bottom: 28px;
  text-align: center;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 20px;
  font-weight: 700;
}

h1 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.subtitle {
  color: var(--text-light);
  font-size: 1rem;
  margin-top: 4px;
}

.search-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}

.tabs {
  display: flex;
  background: var(--surface-hover);
  padding: 6px;
  gap: 4px;
}

.tab {
  flex: 1;
  padding: 14px 16px;
  background: transparent;
  border: none;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-light);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
  min-height: 48px;
}

.tab:hover {
  color: var(--text);
  background: rgba(255,255,255,0.6);
}

.tab.active {
  color: var(--text);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.tab-content {
  padding: 20px;
  display: none;
}

.tab-content.active {
  display: block;
}

.nl-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.nl-input {
  flex: 1;
  min-width: 200px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  font-family: inherit;
  font-size: 1rem;
  outline: none;
  background: var(--surface);
  transition: all 0.2s ease;
  min-height: 48px;
}

.nl-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(234, 88, 12, 0.1);
}

.nl-input::placeholder {
  color: #a8a29e;
}

.manual-grid {
  display: grid;
  gap: 16px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.field select,
.field input {
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  font-family: inherit;
  font-size: 1rem;
  max-width: 100%;
  width: 100%;
  background: var(--surface);
  outline: none;
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 48px;
}

.field select:focus,
.field input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(234, 88, 12, 0.1);
}

.field select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2378716c' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 44px;
}

.manual-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.go-btn {
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius);
  padding: 10px 20px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 4px rgba(234, 88, 12, 0.3);
  min-height: 40px;
  width: auto;
  white-space: nowrap;
  flex-shrink: 0;
}

.go-btn:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(234, 88, 12, 0.35);
}

.go-btn:active {
  transform: translateY(0);
}

.go-btn:disabled {
  background: #d6d3d1;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

.examples {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.examples-label {
  font-size: 0.8rem;
  color: var(--text-light);
  font-weight: 500;
  margin-right: 8px;
}

.chip {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.15s ease;
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  font-weight: 500;
}

.chip:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}

.chip:active {
  transform: scale(0.98);
}

.results {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.result {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

.result:hover {
  box-shadow: var(--shadow);
  border-color: #d6d3d1;
}

.result.best {
  border-color: var(--accent);
  border-width: 2px;
  background: var(--accent-soft);
}

.meta {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.meta strong {
  color: var(--text);
  font-weight: 600;
}

.badge {
  background: var(--accent);
  color: white;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.legs {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.leg {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.leg-route {
  min-width: 52px;
  text-align: center;
  background: var(--accent-soft);
  padding: 12px 10px;
  border-radius: var(--radius);
  flex-shrink: 0;
}

.route-num {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

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

.time-row {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text);
  word-wrap: break-word;
}

.stop-row {
  color: var(--text-light);
  font-size: 0.95rem;
  margin-bottom: 4px;
  word-wrap: break-word;
}

.dur-row {
  font-size: 0.85rem;
  color: #a8a29e;
}

.change {
  margin: 12px 0 12px 66px;
  padding: 14px 16px;
  background: #fafaf9;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.95rem;
  border: 1px dashed var(--border);
  flex-wrap: wrap;
}

.change-wait {
  color: var(--text-light);
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
}

.days {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.day {
  width: 36px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  color: #a8a29e;
  background: var(--surface-hover);
  text-transform: uppercase;
}

.day.on {
  background: var(--success-bg);
  color: var(--success);
}

.day.today {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.banner {
  background: var(--accent-soft);
  border: 1.5px solid rgba(234, 88, 12, 0.2);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-bottom: 16px;
  font-size: 1rem;
  color: var(--accent-hover);
  display: flex;
  align-items: center;
  gap: 12px;
}

.banner.arrive {
  background: #eff6ff;
  border-color: rgba(37, 99, 235, 0.2);
  color: #1d4ed8;
}

.banner.first {
  background: #f0fdf4;
  border-color: rgba(22, 163, 74, 0.2);
  color: #15803d;
}

.banner.last {
  background: var(--warning-bg);
  border-color: rgba(217, 119, 6, 0.2);
  color: #b45309;
}

.empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-light);
}

.empty-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: var(--surface-hover);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.empty-icon::before {
  content: '';
  width: 32px;
  height: 32px;
  background: var(--text-light);
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cpath d='M12 8v4M12 16h.01'/%3E%3C/svg%3E") center/contain no-repeat;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cpath d='M12 8v4M12 16h.01'/%3E%3C/svg%3E") center/contain no-repeat;
  opacity: 0.5;
}

.empty-icon.searching::before {
  background: var(--accent);
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='m21 21-4.3-4.3'/%3E%3C/svg%3E") center/contain no-repeat;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='m21 21-4.3-4.3'/%3E%3C/svg%3E") center/contain no-repeat;
}

.empty-icon.error::before {
  background: var(--warning);
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2'%3E%3Cpath d='M10.29 3.86 1.82 18a2 2 0 0 0 1.71 3h16.94a2 2 0 0 0 1.71-3L13.71 3.86a2 2 0 0 0-3.42 0z'/%3E%3Cpath d='M12 9v4M12 17h.01'/%3E%3C/svg%3E") center/contain no-repeat;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2'%3E%3Cpath d='M10.29 3.86 1.82 18a2 2 0 0 0 1.71 3h16.94a2 2 0 0 0 1.71-3L13.71 3.86a2 2 0 0 0-3.42 0z'/%3E%3Cpath d='M12 9v4M12 17h.01'/%3E%3C/svg%3E") center/contain no-repeat;
}

.empty-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.empty-text {
  font-size: 1rem;
  line-height: 1.5;
  max-width: 400px;
  margin: 0 auto;
}

.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  gap: 16px;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-text {
  color: var(--text-light);
  font-size: 1rem;
}

.pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

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

.skeleton {
  background: linear-gradient(90deg, var(--surface-hover) 25%, #f5f5f4 50%, var(--surface-hover) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Mobile optimizations */
@media (max-width: 480px) {
  body {
    padding: 16px 12px;
  }
  h1 {
    font-size: 1.5rem;
  }
  .subtitle {
    font-size: 0.95rem;
  }
  .tab-content {
    padding: 16px;
  }
  .manual-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .nl-row {
    flex-direction: column;
  }
  .nl-input {
    width: 100%;
  }
  .go-btn {
    width: 100%;
    padding: 10px 16px;
    font-size: 0.9rem;
    min-height: 40px;
  }
  h1 {
    font-size: 1.5rem;
  }
  .subtitle {
    font-size: 0.95rem;
  }
  .tab-content {
    padding: 16px;
  }
  .manual-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .nl-row {
    flex-direction: column;
  }
  .nl-input {
    width: 100%;
  }
  
  h1 {
    font-size: 1.5rem;
  }
  
  .subtitle {
    font-size: 0.95rem;
  }
  
  .tab-content {
    padding: 16px;
  }
  
  .manual-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  
  .nl-row {
    flex-direction: column;
  }
  
  .nl-input {
    width: 100%;
  }
  
  .go-btn {
    width: 100%;
  }
  
  .change {
    margin-left: 0;
    margin-top: 12px;
    margin-bottom: 12px;
  }
  
  .leg {
    flex-wrap: wrap;
  }
  
  .leg-route {
    min-width: 60px;
    padding: 14px 12px;
  }
  
  .route-num {
    font-size: 1.4rem;
  }
  
  .time-row {
    font-size: 1.2rem;
  }
  
  .stop-row {
    font-size: 1rem;
  }
  
  .result {
    padding: 16px;
  }
  
  .chip {
    padding: 12px 16px;
    font-size: 0.95rem;
  }
  
  .days {
    gap: 4px;
  }
  
  .day {
    width: 32px;
    height: 28px;
    font-size: 0.7rem;
  }
}

/* Tablet */
@media (min-width: 481px) and (max-width: 768px) {
  body {
    padding: 20px 16px;
  }
  
  .manual-row {
    grid-template-columns: 1fr;
  }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
  .tab,
  .go-btn,
  .chip {
    min-height: 48px;
  }
  
  .field select,
  .field input,
  .nl-input {
    font-size: 16px;
  }
}

/* Reduce motion preference */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .spinner {
    animation: none;
    border-color: var(--accent);
    border-top-color: transparent;
  }
}