/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --black:   #000000;
  --white:   #ffffff;
  --g900:    #0a0a0a;
  --g800:    #1a1a1a;
  --g700:    #2a2a2a;
  --g600:    #444444;
  --g500:    #666666;
  --g400:    #888888;
  --g300:    #bbbbbb;
  --g200:    #dddddd;
  --g150:    #e8e8e8;
  --g100:    #f2f2f2;
  --g50:     #f9f9f9;
  --font:    'Space Grotesk', system-ui, -apple-system, sans-serif;
  --radius:  12px;
  --trans:   0.4s cubic-bezier(0.16, 1, 0.3, 1);
  
  /* Theme mapping */
  --bg: var(--white);
  --fg: var(--black);
  --overlay-bg: rgba(255, 255, 255, 0.9);
  --card-bg: var(--white);
  --border: var(--g200);
  --accent: var(--black);
  --shadow: rgba(0, 0, 0, 0.08);
}

body.dark-mode {
  --bg: var(--g900);
  --fg: var(--g100);
  --overlay-bg: rgba(10, 10, 10, 0.9);
  --card-bg: var(--g800);
  --border: var(--g700);
  --accent: var(--white);
  --shadow: rgba(0, 0, 0, 0.4);
}

html, body {
  height: 100%;
  overflow: hidden;
  font-family: var(--font);
  background: var(--bg);
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
  transition: background var(--trans), color var(--trans);
}

button { cursor: pointer; font-family: var(--font); }

/* ============================================================
   MAP (always rendered behind overlays)
   ============================================================ */
#map {
  position: fixed;
  inset: 0;
  z-index: 0;
}

/* hide maplibre default controls */
.maplibregl-ctrl-group,
.maplibregl-ctrl-logo,
.maplibregl-ctrl-attrib { display: none !important; }

/* ============================================================
   OVERLAYS
   ============================================================ */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 10;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--trans);
}
.overlay.active {
  pointer-events: none; /* pass through to map by default */
  opacity: 1;
}
/* opaque screens block map intentionally */
.overlay-opaque.active,
.overlay-boarding.active {
  pointer-events: all;
}
/* only direct UI children capture events; map stays pannable/zoomable */
.overlay.active .map-topbar,
.overlay.active .map-selection-bar,
.overlay.active .map-bottom-panel,
.overlay.active .flight-hud,
.overlay.active .flight-end,
.overlay.active .sound-panel {
  pointer-events: all;
}
.overlay-opaque {
  background: var(--white);
  display: flex;
  flex-direction: column;
}
.overlay-boarding {
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.72);
  backdrop-filter: blur(4px);
}
.overlay-flight {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

/* ============================================================
   MAP OVERLAY — TOP BAR
   ============================================================ */
.map-topbar {
  position: absolute;
  top: 0; left: 0; right: 0;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(to bottom, var(--overlay-bg) 60%, transparent);
  backdrop-filter: blur(8px);
}

.logo {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--black);
}
.logo-dot { color: var(--g400); }

.topbar-actions {
  display: flex;
  gap: 12px;
}

.icon-btn {
  width: 38px; height: 38px;
  border: 1.5px solid var(--g200);
  border-radius: 50%;
  background: var(--white);
  display: flex; align-items: center; justify-content: center;
  transition: background var(--trans), border-color var(--trans);
}
.icon-btn:hover { background: var(--g100); border-color: var(--g300); }
.icon-btn.active { background: var(--black); border-color: var(--black); color: var(--white); }
.icon-btn svg { width: 16px; height: 16px; }

/* ============================================================
   MAP OVERLAY — SELECTION BAR
   ============================================================ */
.map-selection-bar {
  position: absolute;
  top: 84px; left: 50%; transform: translateX(-50%);
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 40px;
  padding: 10px 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 8px 32px var(--shadow);
  min-width: 240px;
  transition: all var(--trans);
}

.route-display {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  justify-content: center;
}

.route-point {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 48px;
}
.route-code {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1;
}
.route-label {
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--g400);
  text-transform: uppercase;
  margin-top: 2px;
}
.route-arrow-wrap { color: var(--g400); }
.route-arrow-svg { width: 40px; height: 16px; }

/* ============================================================
   MAP OVERLAY — BOTTOM PANEL
   ============================================================ */
.map-bottom-panel {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: var(--white);
  border-top: 1px solid var(--g200);
  padding: 20px 24px 32px;
  border-radius: 20px 20px 0 0;
}

.slider-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 12px;
}
.slider-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--g500);
}
.slider-values {
  font-size: 14px;
  font-weight: 600;
  color: var(--black);
}
.slider-sep { color: var(--g400); margin: 0 4px; }

.slider-track-wrap { position: relative; margin-bottom: 18px; }

input[type="range"]#radius-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 3px;
  background: var(--g200);
  border-radius: 2px;
  outline: none;
  display: block;
}
input[type="range"]#radius-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--black);
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
  transition: transform 0.15s;
}
input[type="range"]#radius-slider::-webkit-slider-thumb:hover { transform: scale(1.15); }
input[type="range"]#radius-slider::-moz-range-thumb {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--black);
  cursor: pointer;
  border: none;
}

.slider-tick-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 6px;
  font-size: 10px;
  color: var(--g400);
  font-weight: 500;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn-primary {
  width: 100%;
  padding: 15px;
  background: var(--black);
  color: var(--white);
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: opacity var(--trans), transform 0.1s;
}
.btn-primary:hover:not(:disabled) { opacity: 0.85; }
.btn-primary:active:not(:disabled) { transform: scale(0.98); }
.btn-primary:disabled { background: var(--g300); cursor: not-allowed; }

.btn-back {
  width: 40px; height: 40px;
  border: 1.5px solid var(--g200);
  border-radius: 50%;
  background: transparent;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.btn-back:hover { background: var(--g100); }
.btn-back svg { width: 18px; height: 18px; }

/* ============================================================
   AIRPORT MARKERS
   ============================================================ */
.airport-marker {
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: transform 0.15s;
}
.airport-marker:hover { transform: scale(1.2); }

.airport-dot {
  width: 10px; height: 10px;
  background: var(--white);
  border: 2px solid var(--black);
  border-radius: 50%;
  transition: background var(--trans), transform var(--trans);
  box-shadow: 0 1px 4px rgba(0,0,0,0.25);
}
.airport-marker.origin .airport-dot {
  background: var(--black);
  transform: scale(1.4);
}
.airport-marker.destination .airport-dot {
  background: var(--black);
  border-width: 3px;
  transform: scale(1.4);
}
.airport-marker.out-of-range .airport-dot {
  background: var(--g300);
  border-color: var(--g300);
  opacity: 0.5;
}
.airport-marker.out-of-range { pointer-events: none; }

.airport-label {
  position: absolute;
  top: -22px; left: 50%; transform: translateX(-50%);
  background: var(--black);
  color: var(--white);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 2px 5px;
  border-radius: 3px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s;
}
.airport-marker:hover .airport-label,
.airport-marker.origin .airport-label,
.airport-marker.destination .airport-label { opacity: 1; }

/* ============================================================
   SEAT SELECTION OVERLAY
   ============================================================ */
.screen-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 20px 12px;
  border-bottom: 1px solid var(--g150);
  flex-shrink: 0;
}
.header-route {
  flex: 1;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.header-dur {
  font-size: 12px;
  font-weight: 500;
  color: var(--g500);
  background: var(--g100);
  padding: 4px 10px;
  border-radius: 20px;
}

.seat-scroll-area {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 16px 0 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  -webkit-overflow-scrolling: touch;
}
.seat-scroll-area::-webkit-scrollbar { width: 4px; }
.seat-scroll-area::-webkit-scrollbar-track { background: transparent; }
.seat-scroll-area::-webkit-scrollbar-thumb { background: var(--g300); border-radius: 2px; }

.seat-class-label {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--g400);
  margin-bottom: 8px;
  align-self: flex-start;
  margin-left: 24px;
}

#seat-map-svg { display: block; }

/* seat rect states set by JS via classes */
.seat-available { fill: var(--white); stroke: var(--g300); cursor: pointer; }
.seat-available:hover { fill: var(--g100); stroke: var(--g600); }
.seat-occupied { fill: var(--g150); stroke: var(--g300); cursor: default; pointer-events: none; }
.seat-selected { fill: var(--black); stroke: var(--black); cursor: pointer; }
.seat-exit { fill: none; stroke: var(--g400); stroke-dasharray: 4 2; pointer-events: none; }

.seat-label { font-family: var(--font); pointer-events: none; }
.seat-label-available { fill: var(--g400); }
.seat-label-occupied { fill: var(--g300); }
.seat-label-selected { fill: var(--white); }

/* ============================================================
   TASK PANEL
   ============================================================ */
.task-panel {
  border-top: 1px solid var(--g150);
  padding: 16px 20px 28px;
  flex-shrink: 0;
  background: var(--white);
}
.task-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.task-label-text {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--g500);
  flex-shrink: 0;
}
.task-btns {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.task-btn {
  padding: 7px 14px;
  border: 1.5px solid var(--g200);
  border-radius: 20px;
  background: transparent;
  font-size: 13px;
  font-weight: 500;
  color: var(--g600);
  transition: all 0.15s;
}
.task-btn:hover { border-color: var(--g600); color: var(--black); }
.task-btn.selected {
  background: var(--black);
  border-color: var(--black);
  color: var(--white);
}

/* ============================================================
   BOARDING PASS
   ============================================================ */
.boarding-pass {
  width: min(360px, 92vw);
  background: var(--white);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 24px 80px rgba(0,0,0,0.6);
  user-select: none;
  will-change: transform;
}

.bp-upper {
  padding: 28px 28px 20px;
  will-change: transform;
  transform-origin: center top;
}
.bp-airline-name {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--g400);
  text-align: center;
  margin-bottom: 24px;
}
.bp-route-block {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.bp-airport-block { text-align: left; }
.bp-airport-block.bp-right { text-align: right; }
.bp-airport-code {
  font-size: 42px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
}
.bp-airport-city {
  font-size: 11px;
  color: var(--g500);
  font-weight: 500;
  margin-top: 4px;
}
.bp-mid {
  flex: 1;
  padding: 0 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.bp-plane-svg {
  width: 40px; height: 20px;
  color: var(--black);
}
.bp-route-line {
  width: 100%;
  height: 1px;
  background: var(--g300);
  border-top: 1px dashed var(--g300);
}

.bp-details-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px 8px;
  margin-bottom: 20px;
}
.bp-detail {}
.bp-detail-label {
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--g400);
  text-transform: uppercase;
  margin-bottom: 3px;
}
.bp-detail-val {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--black);
}

.bp-barcode-wrap {
  border-top: 1px solid var(--g150);
  padding-top: 16px;
}
#bp-barcode { width: 100%; height: 48px; display: block; }

/* Tear line */
.bp-tear-line {
  display: flex;
  align-items: center;
  position: relative;
  height: 24px;
  background: var(--white);
  border-top: 1px dashed var(--g300);
  border-bottom: 1px dashed var(--g300);
}
.tear-hole {
  width: 24px; height: 24px;
  background: var(--g100);
  border-radius: 50%;
  flex-shrink: 0;
  margin: 0 -12px;
  border: 1px solid var(--g200);
}
.tear-hole.left { margin-left: -12px; }
.tear-hole.right { margin-right: -12px; }
.tear-dashes {
  flex: 1;
  height: 1px;
  background: repeating-linear-gradient(
    to right,
    var(--g300) 0px, var(--g300) 6px,
    transparent 6px, transparent 12px
  );
}

/* Stub (lower half) */
.bp-stub {
  padding: 18px 28px 24px;
  background: var(--g50);
  touch-action: none;
}
.stub-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--g600);
}
.swipe-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.swipe-chevrons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  line-height: 1;
}
.swipe-chevrons span {
  font-size: 14px;
  color: var(--black);
  opacity: 0.3;
  animation: chevron-pulse 1.4s ease-in-out infinite;
}
.swipe-chevrons span:nth-child(1) { animation-delay: 0s; }
.swipe-chevrons span:nth-child(2) { animation-delay: 0.18s; }
.swipe-chevrons span:nth-child(3) { animation-delay: 0.36s; }

@keyframes chevron-pulse {
  0%, 100% { opacity: 0.15; }
  50% { opacity: 0.9; }
}

.swipe-hint-text {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--g400);
  text-transform: uppercase;
}

/* Boarding pass tear animation */
.bp-upper.tearing {
  animation: tear-upper 0.7s cubic-bezier(0.4, 0, 1, 1) forwards;
}
.bp-stub.tearing {
  animation: tear-stub 0.65s cubic-bezier(0.4, 0, 1, 1) forwards;
}
@keyframes tear-down-upper {
  0%   { transform: translateY(0) rotate(0deg); opacity: 1; }
  20%  { transform: translateY(10px) rotate(1deg); opacity: 1; }
  100% { transform: translateY(140vh) rotate(6deg); opacity: 0; }
}
@keyframes tear-down-stub {
  0%   { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(120vh); opacity: 0; }
}

/* ============================================================
   FLIGHT HUD
   ============================================================ */
.flight-hud {
  display: flex;
  align-items: stretch;
  margin: 0;
  background: rgba(0,0,0,0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  color: var(--white);
  padding: 0;
  height: 72px;
}
.hud-cell {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 20px;
}
.hud-center-cell {
  flex: 1;
  align-items: center;
  text-align: center;
}
.hud-right-cell { align-items: flex-end; }

.hud-label {
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: rgba(255,255,255,0.4);
  text-transform: uppercase;
  margin-bottom: 4px;
}
.hud-value {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
}
.mono { font-variant-numeric: tabular-nums; }

.hud-route-text {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1;
}
.hud-task-text {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: rgba(255,255,255,0.4);
  text-transform: uppercase;
  margin-top: 5px;
}
.hud-divider {
  width: 1px;
  background: rgba(255,255,255,0.1);
  margin: 12px 0;
}

/* ============================================================
   FLIGHT END CARD
   ============================================================ */
.flight-end {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(8px);
}
.flight-end.hidden { display: none; }

.pause-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.4);
  backdrop-filter: blur(4px);
  z-index: 50;
  pointer-events: none;
}
.pause-overlay.hidden { display: none; }
.pause-text {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--white);
  text-shadow: 0 4px 12px rgba(0,0,0,0.5);
}

.end-card {
  background: var(--white);
  border-radius: 16px;
  padding: 48px 40px;
  text-align: center;
  max-width: 300px;
  width: 90vw;
}
.end-check {
  font-size: 40px;
  margin-bottom: 16px;
  line-height: 1;
}
.end-title {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}
.end-sub {
  font-size: 14px;
  color: var(--g500);
  margin-bottom: 28px;
}
.end-card .btn-primary { max-width: 200px; margin: 0 auto; display: block; width: auto; padding: 14px 32px; }

/* ============================================================
   SOUND MIXER UI
   ============================================================ */
.hud-sound-btn {
  background: transparent;
  border: none;
  color: var(--white);
  width: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.6;
  transition: opacity 0.2s;
}
.hud-sound-btn:hover { opacity: 1; }
.hud-sound-btn svg { width: 20px; height: 20px; }

.sound-panel {
  position: absolute;
  bottom: 84px;
  right: 20px;
  width: 320px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 12px 40px var(--shadow);
  padding: 20px;
  z-index: 100;
  transition: all var(--trans);
}
.sound-panel.hidden { opacity: 0; transform: translateY(10px); pointer-events: none; }

.sound-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.sound-panel-header h3 { font-size: 14px; font-weight: 700; color: var(--fg); text-transform: uppercase; letter-spacing: 0.1em; }
.close-btn { background: transparent; border: none; font-size: 24px; color: var(--g400); cursor: pointer; }

.sound-rows { display: flex; flex-direction: column; gap: 20px; }
.sound-row { display: flex; flex-direction: column; gap: 8px; }
.sound-name { font-size: 12px; font-weight: 600; color: var(--g500); }
.sound-slider {
  -webkit-appearance: none;
  width: 100%;
  height: 4px;
  background: var(--g150);
  border-radius: 2px;
  outline: none;
}
.sound-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 1px 4px var(--shadow);
}

.sound-options { display: flex; gap: 6px; margin-bottom: 4px; }
.sound-opt-btn {
  flex: 1;
  padding: 4px;
  font-size: 10px;
  font-weight: 600;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--g500);
  border-radius: 4px;
  transition: all 0.2s;
}
.sound-opt-btn.active { background: var(--accent); color: var(--bg); border-color: var(--accent); }

/* ============================================================
   PLANE MARKER (on flight map)
   ============================================================ */
.plane-marker {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.3));
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform;
}
.plane-marker svg {
  width: 32px; height: 32px;
  fill: var(--accent);
  transition: fill var(--trans);
}

/* ============================================================
   START ANIMATION / SPLASH
   ============================================================ */
.splash-screen {
  position: fixed;
  inset: 0;
  background: var(--black);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.8s ease-out;
}
.splash-screen.fade-out { opacity: 0; pointer-events: none; }
.splash-logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.1em;
  opacity: 0;
  transform: translateY(10px);
  animation: splash-entry 1.2s forwards 0.3s;
}
@keyframes splash-entry {
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   MISC UTILITIES
   ============================================================ */
.hidden { display: none !important; }

/* Responsive tweaks */
@media (max-width: 380px) {
  .bp-airport-code { font-size: 34px; }
  .hud-value { font-size: 18px; }
  .hud-route-text { font-size: 12px; }
}