/* ============================================
   EDR SEAT CHECKER — Brand & Base Styles
   Mobile-first, responsive
   ============================================ */

:root {
  /* EDR Brand Palette */
  --green:        #1A6B3A;   /* EDR primary green */
  --green-deep:   #0F4525;   /* Darker header/navbar */
  --green-light:  #E8F5EE;   /* Light tint backgrounds */
  --gold:         #D4A017;   /* Ethiopian gold accent */
  --gold-light:   #FFF8E1;   /* Gold tint */

  /* Neutrals */
  --ink:          #1A1A1A;
  --ink-soft:     #4A4A4A;
  --border:       #DDE3E0;
  --surface:      #F7F9F8;
  --white:        #FFFFFF;

  /* Seat status */
  --available:    #22A84D;
  --booked:       #E53935;
  --held:         #FB8C00;

  /* Seat type colors */
  --hard-seat:    #2196F3;
  --hard-berth:   #9C27B0;
  --soft-berth:   #FF6F00;

  /* Typography */
  --font-main:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing scale */
  --sp-1:  4px;
  --sp-2:  8px;
  --sp-3:  12px;
  --sp-4:  16px;
  --sp-5:  20px;
  --sp-6:  24px;
  --sp-8:  32px;
  --sp-10: 40px;
  --sp-12: 48px;

  /* Radius */
  --r-sm:  6px;
  --r-md:  10px;
  --r-lg:  16px;
  --r-xl:  24px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,.10), 0 2px 4px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 30px rgba(0,0,0,.12), 0 4px 8px rgba(0,0,0,.06);
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  font-size: 15px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--surface);
  min-height: 100dvh;
}
img { display: block; max-width: 100%; }
button { cursor: pointer; font-family: inherit; }
a { color: inherit; }
select, input { font-family: inherit; }

/* ---- Topbar ---- */
.topbar {
  background: var(--green-deep);
  color: var(--white);
  padding: var(--sp-4) var(--sp-4);
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}
.topbar-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  text-decoration: none;
  color: inherit;
}
.topbar-logo svg {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}
.topbar-name {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -.3px;
  color: var(--white);
}
.topbar-name span {
  color: var(--gold);
}
.topbar-sub {
  font-size: 11px;
  color: rgba(255,255,255,.55);
  letter-spacing: .4px;
  text-transform: uppercase;
}

/* ---- Layout ---- */
.page { max-width: 520px; margin: 0 auto; padding: var(--sp-4); }

/* ---- Cards ---- */
.card {
  background: var(--white);
  border-radius: var(--r-lg);
  border: 1.5px solid var(--border);
  padding: var(--sp-5);
  box-shadow: var(--shadow-sm);
}
.card + .card { margin-top: var(--sp-4); }
.card-title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .6px;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: var(--sp-4);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

/* ---- Form Controls ---- */
.field { margin-bottom: var(--sp-4); }
.field:last-child { margin-bottom: 0; }
.field-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .5px;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: var(--sp-2);
}
.field-label .req { color: var(--booked); margin-left: 2px; }

.select-wrap {
  position: relative;
}
.select-wrap select {
  width: 100%;
  padding: 13px 40px 13px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-md);
  background: var(--white);
  font-size: 15px;
  color: var(--ink);
  appearance: none;
  -webkit-appearance: none;
  outline: none;
  transition: border-color .15s;
}
.select-wrap select:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(26,107,58,.12);
}
.select-wrap select:disabled {
  opacity: .5;
  background: var(--surface);
}
.select-wrap::after {
  content: '';
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid var(--ink-soft);
  pointer-events: none;
}

/* Station select with flag */
.station-option-flag {
  display: inline-block;
  margin-right: 4px;
}

/* ---- Date Picker ---- */
.date-wrap { position: relative; }
#trip-date {
  width: 100%;
  padding: 13px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-md);
  background: var(--white);
  font-size: 15px;
  color: var(--ink);
  outline: none;
  transition: border-color .15s;
}
#trip-date:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(26,107,58,.12);
}

/* Flatpickr overrides */
.flatpickr-calendar {
  border-radius: var(--r-lg) !important;
  box-shadow: var(--shadow-lg) !important;
  border: 1.5px solid var(--border) !important;
  font-family: var(--font-main) !important;
}
.flatpickr-day.flatpickr-disabled {
  background: #fafafa !important;
  color: #ccc !important;
  text-decoration: line-through !important;
}
.flatpickr-day.selected {
  background: var(--green) !important;
  border-color: var(--green) !important;
}
.flatpickr-day:hover:not(.flatpickr-disabled):not(.selected) {
  background: var(--green-light) !important;
}
.flatpickr-months .flatpickr-month,
.flatpickr-weekdays {
  background: var(--green-deep) !important;
  color: var(--white) !important;
  border-radius: var(--r-lg) var(--r-lg) 0 0 !important;
}
.flatpickr-current-month input.cur-year,
.flatpickr-current-month .flatpickr-monthDropdown-months,
.flatpickr-weekday {
  color: var(--white) !important;
}
.flatpickr-prev-month svg,
.flatpickr-next-month svg { fill: var(--white) !important; }

/* ---- Direction hint ---- */
.direction-hint {
  display: none;
  margin-top: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--r-md);
  font-size: 13px;
  line-height: 1.5;
  gap: var(--sp-2);
  align-items: flex-start;
}
.direction-hint.show { display: flex; }
.direction-hint.odd {
  background: var(--green-light);
  border: 1px solid rgba(26,107,58,.2);
  color: var(--green-deep);
}
.direction-hint.even {
  background: var(--gold-light);
  border: 1px solid rgba(212,160,23,.25);
  color: #7A5800;
}
.direction-hint-icon { font-size: 16px; flex-shrink: 0; margin-top: 1px; }

/* ---- Travel Time Toggle ---- */
.time-toggle {
  display: flex;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}
.time-btn {
  flex: 1;
  padding: 11px var(--sp-3);
  border: 1.5px solid var(--border);
  border-radius: var(--r-md);
  background: var(--white);
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-soft);
  transition: all .15s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
}
.time-btn.active {
  border-color: var(--green);
  background: var(--green-light);
  color: var(--green-deep);
  font-weight: 600;
}

/* ---- Primary Button ---- */
.btn-primary {
  width: 100%;
  padding: 15px var(--sp-6);
  background: var(--green);
  color: var(--white);
  border: none;
  border-radius: var(--r-md);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .2px;
  transition: background .15s, transform .1s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
}
.btn-primary:hover { background: var(--green-deep); }
.btn-primary:active { transform: scale(.98); }
.btn-primary:disabled {
  opacity: .5;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  padding: 10px var(--sp-5);
  background: transparent;
  color: var(--green);
  border: 1.5px solid var(--green);
  border-radius: var(--r-md);
  font-size: 14px;
  font-weight: 600;
  transition: all .15s;
}
.btn-secondary:hover {
  background: var(--green-light);
}

/* ---- Route swap button ---- */
.route-row {
  display: flex;
  gap: var(--sp-3);
  align-items: flex-end;
}
.route-row .field { flex: 1; margin-bottom: 0; }
.swap-btn {
  width: 44px;
  height: 44px;
  border: 1.5px solid var(--border);
  border-radius: 50%;
  background: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all .2s;
  margin-bottom: 2px;
  font-size: 18px;
}
.swap-btn:hover {
  border-color: var(--green);
  background: var(--green-light);
  transform: rotate(180deg);
}

/* ---- Loading Spinner ---- */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2.5px solid rgba(255,255,255,.3);
  border-top-color: var(--white);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
.spinner.dark {
  border-color: rgba(26,107,58,.2);
  border-top-color: var(--green);
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Trip Result Card ---- */
.trip-card {
  background: var(--white);
  border-radius: var(--r-lg);
  border: 1.5px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-top: var(--sp-4);
}
.trip-card-header {
  background: var(--green-deep);
  color: var(--white);
  padding: var(--sp-4) var(--sp-5);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.trip-train-name {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -.4px;
}
.trip-train-meta {
  font-size: 12px;
  color: rgba(255,255,255,.65);
  margin-top: 2px;
}
.trip-date-badge {
  background: var(--gold);
  color: var(--green-deep);
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
}

.trip-times {
  padding: var(--sp-5);
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}
.trip-time-station { flex: 1; }
.trip-time-value {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -.5px;
  font-variant-numeric: tabular-nums;
}
.trip-station-name {
  font-size: 13px;
  color: var(--ink-soft);
  margin-top: 2px;
}
.trip-time-divider {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-1);
  color: var(--ink-soft);
}
.trip-time-line {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: 11px;
  color: var(--ink-soft);
  white-space: nowrap;
}
.trip-time-line::before,
.trip-time-line::after {
  content: '';
  display: block;
  height: 1px;
  width: 24px;
  background: var(--border);
}

.trip-warning {
  margin: 0 var(--sp-5) var(--sp-4);
  padding: var(--sp-3) var(--sp-4);
  background: #FFF3CD;
  border: 1px solid #FFE082;
  border-radius: var(--r-sm);
  font-size: 13px;
  color: #7A5800;
  display: flex;
  align-items: flex-start;
  gap: var(--sp-2);
}

/* ---- Seat Type Grid ---- */
.seat-types {
  padding: 0 var(--sp-5) var(--sp-5);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3);
}
.seat-type-item {
  padding: var(--sp-3) var(--sp-4);
  border: 1.5px solid var(--border);
  border-radius: var(--r-md);
  transition: border-color .15s;
}
.seat-type-item.full {
  opacity: .5;
}
.seat-type-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-soft);
  margin-bottom: var(--sp-2);
}
.seat-type-count {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -.5px;
  color: var(--available);
}
.seat-type-count.full { color: var(--booked); }
.seat-type-count.low { color: var(--gold); }
.seat-type-price {
  font-size: 12px;
  color: var(--ink-soft);
  margin-top: 2px;
}
.seat-progress {
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  margin-top: var(--sp-2);
  overflow: hidden;
}
.seat-progress-fill {
  height: 100%;
  border-radius: 2px;
  background: var(--available);
  transition: width .4s ease;
}
.seat-progress-fill.low { background: var(--gold); }
.seat-progress-fill.full { background: var(--booked); }

/* ---- No service / Error states ---- */
.state-empty {
  text-align: center;
  padding: var(--sp-10) var(--sp-6);
  color: var(--ink-soft);
}
.state-empty-icon { font-size: 40px; margin-bottom: var(--sp-4); }
.state-empty-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: var(--sp-2);
}
.state-empty-text { font-size: 14px; }

.state-loading {
  text-align: center;
  padding: var(--sp-10) var(--sp-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-4);
  color: var(--ink-soft);
  font-size: 14px;
}

/* ---- CTA footer on trip card ---- */
.trip-card-footer {
  border-top: 1px solid var(--border);
  padding: var(--sp-4) var(--sp-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  flex-wrap: wrap;
}
.trip-card-close-time {
  font-size: 12px;
  color: var(--ink-soft);
}
.trip-card-close-time strong { color: var(--booked); }
.btn-book {
  padding: 10px var(--sp-5);
  background: var(--green);
  color: var(--white);
  border: none;
  border-radius: var(--r-md);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  transition: background .15s;
}
.btn-book:hover { background: var(--green-deep); }

/* ---- Section divider ---- */
.section-divider {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin: var(--sp-5) 0;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .5px;
  text-transform: uppercase;
}
.section-divider::before,
.section-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ---- Back button ---- */
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: 14px;
  font-weight: 600;
  color: var(--green);
  background: none;
  border: none;
  padding: var(--sp-2) 0;
  margin-bottom: var(--sp-4);
}

/* ---- Country badge in station list ---- */
.flag { display: inline; }

/* ---- Coach layout ---- */
.coaches-section { padding: 0 var(--sp-5) var(--sp-5); }
.coach-block { margin-bottom: var(--sp-4); }
.coach-name {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .5px;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: var(--sp-2);
  display: flex;
  justify-content: space-between;
}
.coach-seats {
  display: flex;
  flex-wrap: wrap;
  gap: 3px;
}
.seat-dot {
  width: 14px;
  height: 14px;
  border-radius: 3px;
}
.seat-dot.available { background: var(--available); }
.seat-dot.booked { background: #E0E0E0; }
.seat-dot.held { background: var(--held); }

/* ---- Legend ---- */
.legend {
  display: flex;
  gap: var(--sp-4);
  flex-wrap: wrap;
  padding: 0 var(--sp-5) var(--sp-4);
}
.legend-item {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: 12px;
  color: var(--ink-soft);
}
.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 2px;
}

/* ---- Bottom safe area ---- */
.page { padding-bottom: calc(var(--sp-8) + env(safe-area-inset-bottom)); }

/* ---- Responsive ---- */
@media (min-width: 480px) {
  .seat-types { grid-template-columns: 1fr 1fr 1fr; }
}
@media (min-width: 640px) {
  body { background: #EEF2EF; }
  .page { padding: var(--sp-6) var(--sp-4); }
  .topbar { padding: var(--sp-4) var(--sp-6); }
}