/* =========================================================================
   FlightShade — Premium Aviation UI
   ========================================================================= */

:root {
  --bg-deep: #0c0f14;
  --surface: #161a22;
  --surface-raised: #1e2330;
  --border: rgba(255, 255, 255, 0.07);
  --border-strong: rgba(255, 255, 255, 0.12);
  --border-focus: rgba(232, 168, 76, 0.5);
  --text-primary: #e8eaef;
  --text-secondary: #8b8f9e;
  --text-muted: #555a68;
  --accent: #e8a84c;
  --accent-soft: rgba(232, 168, 76, 0.12);
  --green: #34d399;
  --orange: #fb923c;
  --night-gray: #64748b;
  --error: #f87171;
  --font-body: 'Outfit', system-ui, sans-serif;
  --font-mono: 'Space Mono', 'SF Mono', monospace;
}

/* ---- Base ---- */

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-primary);
  background: var(--bg-deep);
}

/* ---- Map ---- */

#map {
  width: 100%;
  height: 100vh;
}

/* Leaflet zoom controls */
.leaflet-control-zoom {
  border: 1px solid var(--border-strong) !important;
  border-radius: 10px !important;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3) !important;
}

.leaflet-control-zoom a {
  background: var(--surface) !important;
  color: var(--text-secondary) !important;
  border-color: var(--border) !important;
  width: 34px !important;
  height: 34px !important;
  line-height: 34px !important;
  font-size: 16px !important;
  transition: background 0.15s, color 0.15s;
}

.leaflet-control-zoom a:hover {
  background: var(--surface-raised) !important;
  color: var(--text-primary) !important;
}

/* Leaflet attribution */
.leaflet-control-attribution {
  background: rgba(12, 15, 20, 0.7) !important;
  color: var(--text-muted) !important;
  font-size: 10px !important;
  padding: 2px 6px !important;
  border-radius: 4px 0 0 0 !important;
}

.leaflet-control-attribution a {
  color: var(--text-secondary) !important;
}

/* ---- Controls Panel ---- */

#controls {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(12, 15, 20, 0.88);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  padding: 16px 20px 20px;
  display: block;
  box-shadow: 0 -16px 48px rgba(0, 0, 0, 0.35);
}

/* Top accent line */
#controls::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 5%, var(--accent) 50%, transparent 95%);
  opacity: 0.5;
}

#controls > * {
  max-width: 880px;
  margin-left: auto;
  margin-right: auto;
}

/* ---- Brand Header ---- */

#brand-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 14px;
}

.brand-wordmark {
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.04em;
  line-height: 1;
}

/* ---- Form Toggle Button ---- */

#form-toggle {
  margin-left: auto;
  background: none;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  color: var(--text-secondary);
  cursor: pointer;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  transition: color 0.15s, border-color 0.15s, transform 0.2s;
  flex-shrink: 0;
}

#form-toggle:hover {
  color: var(--text-primary);
  border-color: var(--accent);
}

#form-toggle svg {
  transition: transform 0.25s ease;
}

#form-toggle.expanded svg {
  transform: rotate(180deg);
}

/* ---- Form Section ---- */

#form-section {
  padding-bottom: 14px;
  overflow: hidden;
  transition: max-height 0.3s ease, opacity 0.25s ease, padding 0.3s ease;
  max-height: 500px;
}

#form-section.collapsed {
  max-height: 0;
  opacity: 0;
  padding-bottom: 0;
  pointer-events: none;
}

.airport-row {
  display: flex;
  gap: 16px;
  margin-bottom: 10px;
}

.time-row {
  display: flex;
  gap: 16px;
}

.field-group {
  flex: 1;
  position: relative;
  min-width: 0;
}

.field-group label {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}

.field-group input[type="text"],
.field-group input[type="date"],
.field-group input[type="time"] {
  width: 100%;
  box-sizing: border-box;
  font-size: 14px;
  font-family: var(--font-body);
  padding: 10px 12px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.field-group input::placeholder {
  color: var(--text-muted);
}

.field-group input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

/* Date/time picker icons — invert for dark bg */
.field-group input[type="date"]::-webkit-calendar-picker-indicator,
.field-group input[type="time"]::-webkit-calendar-picker-indicator {
  filter: invert(0.7);
}

/* ---- Airport Dropdown ---- */

.airport-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--surface-raised);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
  list-style: none;
  margin: 4px 0 0;
  padding: 4px;
  overflow: hidden;
}

.airport-dropdown li {
  padding: 10px 12px;
  font-size: 13px;
  color: var(--text-primary);
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  border-radius: 6px;
  transition: background 0.12s;
}

.airport-dropdown li:hover,
.airport-dropdown li.active {
  background: rgba(255, 255, 255, 0.06);
}

.airport-dropdown li.active {
  background: var(--accent-soft);
  color: var(--accent);
}

@media (pointer: coarse) {
  .airport-dropdown li {
    min-height: 44px;
    display: flex;
    align-items: center;
  }
}

/* ---- Estimate Tilde ---- */

.time-pair {
  display: flex;
  align-items: center;
  gap: 6px;
  position: relative;
}

.estimate-tilde {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  user-select: none;
}

/* ---- Inline Errors ---- */

.field-error {
  display: none;
  font-size: 12px;
  color: var(--error);
  margin-top: 4px;
}

.field-error.visible {
  display: block;
}

/* ---- Duration Readout ---- */

.duration-readout {
  display: none;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 400;
  color: var(--text-secondary);
  text-align: center;
  margin-top: 10px;
  letter-spacing: 0.02em;
}

.duration-readout.visible {
  display: block;
}

/* ---- Recommendation Block ---- */

#recommendation-block {
  display: none;
  padding: 16px 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

#recommendation-block.visible {
  display: block;
  animation: recFadeIn 0.35s ease;
}

@keyframes recFadeIn {
  from { opacity: 0; transform: translateY(5px); }
  to   { opacity: 1; transform: translateY(0); }
}

.rec-headline {
  font-family: var(--font-body);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.03em;
}

/* Direction-specific colors */
.rec-headline.left {
  color: var(--green);
}

.rec-headline.right {
  color: var(--orange);
}

.rec-headline.muted {
  color: var(--text-secondary);
}

/* Fallback for directional without left/right class */
.rec-headline:not(.left):not(.right):not(.muted) {
  color: var(--accent);
}

.rec-breakdown {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  color: var(--text-secondary);
  margin-top: 6px;
  letter-spacing: 0.02em;
}

.rec-caption {
  font-size: 12px;
  font-weight: 400;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ---- Scrubber Row ---- */

#scrubber-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
}

/* Override inline styles from scrubber.js */
#scrubber-placeholder {
  color: var(--text-muted) !important;
  font-size: 13px;
}

#time-label {
  font-family: var(--font-mono) !important;
  font-size: 12px !important;
  font-weight: 400 !important;
  color: var(--text-secondary) !important;
  min-width: 140px !important;
  white-space: nowrap;
  letter-spacing: 0.01em;
}

/* Custom range slider */
input[type="range"]#scrubber {
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: var(--surface-raised);
  border-radius: 3px;
  outline: none;
  cursor: pointer;
}

input[type="range"]#scrubber::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-deep);
  box-shadow: 0 0 10px rgba(232, 168, 76, 0.35);
  cursor: pointer;
  transition: box-shadow 0.15s;
}

input[type="range"]#scrubber::-webkit-slider-thumb:hover {
  box-shadow: 0 0 16px rgba(232, 168, 76, 0.55);
}

input[type="range"]#scrubber::-moz-range-track {
  height: 6px;
  background: var(--surface-raised);
  border-radius: 3px;
  border: none;
}

input[type="range"]#scrubber::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-deep);
  box-shadow: 0 0 10px rgba(232, 168, 76, 0.35);
  cursor: pointer;
}

/* Touch-friendly scrubber thumb (WCAG 2.5.5 AAA) */
@media (pointer: coarse) {
  input[type="range"]#scrubber {
    height: 44px;
  }
  input[type="range"]#scrubber::-webkit-slider-thumb {
    width: 24px;
    height: 24px;
  }
  input[type="range"]#scrubber::-moz-range-thumb {
    width: 24px;
    height: 24px;
  }
}

/* ---- Scrubber Ticks ---- */

#scrubber-ticks {
  position: relative;
  margin-left: 152px;
  height: 20px;
  margin-top: 2px;
  pointer-events: none;
}

.scrubber-tick {
  position: absolute;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.tick-mark {
  width: 2px;
  height: 8px;
  border-radius: 1px;
}

.tick-label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--text-muted);
  margin-top: 4px;
  white-space: nowrap;
}

/* ---- Full-screen Form Overlay (mobile) ---- */

#fullscreen-form {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2000;
  background: var(--bg-deep);
  padding: 56px 16px 16px;
  overflow-y: auto;
}

#fullscreen-form.active {
  display: block;
}

#fullscreen-back {
  position: absolute;
  top: 12px;
  left: 12px;
  min-height: 44px;
  min-width: 44px;
  cursor: pointer;
  background: none;
  border: none;
  font-size: 14px;
  font-weight: 500;
  color: var(--accent);
  font-family: var(--font-body);
  padding: 0 8px;
}

/* ---- Compact / small screen rules ---- */

@media (max-height: 699px), (max-width: 639px) {
  #controls {
    padding: 10px 14px 14px;
  }

  #brand-header {
    padding-bottom: 8px;
    margin-bottom: 10px;
  }

  .brand-wordmark {
    font-size: 15px;
  }

  .field-group input[type="text"],
  .field-group input[type="date"],
  .field-group input[type="time"] {
    padding: 7px 10px;
    font-size: 13px;
  }

  .field-group label {
    font-size: 10px;
    margin-bottom: 4px;
  }

  .airport-row,
  .time-row {
    gap: 10px;
  }

  .rec-headline {
    font-size: 20px;
  }

  #recommendation-block {
    padding: 10px 0;
  }

  .rec-breakdown {
    font-size: 11px;
  }

  #scrubber-row {
    margin-top: 6px;
  }

  #scrubber-ticks {
    margin-left: 152px;
  }
}

/* ---- Narrow screen rules (phone portrait) ---- */

@media (max-width: 479px) {
  .airport-row,
  .time-row {
    flex-direction: column;
    gap: 8px;
  }

  .time-pair {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 6px;
  }

  #scrubber-ticks {
    margin-left: 0;
  }

  #scrubber-row {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  #time-label {
    min-width: 0 !important;
    text-align: center;
  }
}

/* ---- Touch target rules ---- */

@media (pointer: coarse) {
  .field-group input[type="text"],
  .field-group input[type="date"],
  .field-group input[type="time"] {
    min-height: 44px;
  }
}