/* ============ Theme variables ============ */
:root {
  --bg: #0f172a;
  --bg-soft: #131c31;
  --card: rgba(30, 41, 59, 0.72);
  --card-solid: #1e293b;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --accent-2: #818cf8;
  --accent-hover: #0ea5e9;
  --error: #f87171;
  --success: #4ade80;
  --warning: #fbbf24;
  --border: #334155;
  --border-soft: rgba(148, 163, 184, 0.18);
  --grid-line: rgba(148, 163, 184, 0.06);
  --glow-1: rgba(56, 189, 248, 0.16);
  --glow-2: rgba(129, 140, 248, 0.14);
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  --map-bg: #0c1425;
  --map-grid: #1e293b;
  --map-text: #e2e8f0;
  --input-bg: rgba(15, 23, 42, 0.6);
}

[data-theme="light"] {
  --bg: #f1f5f9;
  --bg-soft: #e8eef5;
  --card: rgba(255, 255, 255, 0.82);
  --card-solid: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --accent: #0284c7;
  --accent-2: #6366f1;
  --accent-hover: #0369a1;
  --error: #dc2626;
  --success: #16a34a;
  --warning: #d97706;
  --border: #cbd5e1;
  --border-soft: rgba(100, 116, 139, 0.22);
  --grid-line: rgba(100, 116, 139, 0.08);
  --glow-1: rgba(2, 132, 199, 0.12);
  --glow-2: rgba(99, 102, 241, 0.1);
  --shadow: 0 18px 50px rgba(15, 23, 42, 0.12);
  --map-bg: #e2e8f0;
  --map-grid: #cbd5e1;
  --map-text: #0f172a;
  --input-bg: rgba(255, 255, 255, 0.7);
}

/* ============ Base ============ */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.5rem 1rem;
  position: relative;
  overflow-x: hidden;
  transition: background 0.3s ease, color 0.3s ease;
}

/* ============ Background decoration ============ */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

.bg-glow {
  position: fixed;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  z-index: 0;
  animation: drift 18s ease-in-out infinite alternate;
}

.bg-glow-1 {
  top: -160px;
  left: -120px;
  background: var(--glow-1);
}

.bg-glow-2 {
  bottom: -180px;
  right: -140px;
  background: var(--glow-2);
  animation-delay: -9s;
}

@keyframes drift {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(40px, 30px) scale(1.08); }
}

/* ============ Header ============ */
.site-header {
  width: 100%;
  max-width: 620px;
  margin-bottom: 1.25rem;
  position: relative;
  z-index: 1;
}

.header-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 8px 24px rgba(56, 189, 248, 0.35);
  flex-shrink: 0;
}

.brand-icon svg {
  width: 26px;
  height: 26px;
}

h1 {
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.1;
}

.subtitle {
  color: var(--muted);
  font-size: 0.88rem;
  margin-top: 0.2rem;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.lang-select select {
  background: var(--input-bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.4rem 0.5rem;
  font-size: 0.85rem;
  cursor: pointer;
}

.lang-select select:focus {
  outline: none;
  border-color: var(--accent);
}

.theme-toggle {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--input-bg);
  color: var(--text);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: border-color 0.2s ease, transform 0.15s ease;
}

.theme-toggle:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
}

/* Show sun in dark mode, moon in light mode */
[data-theme="dark"] .icon-sun,
:root:not([data-theme]) .icon-sun { display: block; }
[data-theme="dark"] .icon-moon,
:root:not([data-theme]) .icon-moon { display: none; }
[data-theme="light"] .icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: block; }

/* ============ Container / card ============ */
.container {
  background: var(--card);
  border: 1px solid var(--border-soft);
  border-radius: 18px;
  padding: 1.75rem;
  width: 100%;
  max-width: 620px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  position: relative;
  z-index: 1;
}

/* ============ Form ============ */
.lookup-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  position: relative;
}

label {
  font-size: 0.82rem;
  color: var(--muted);
  font-weight: 500;
}

.input-wrap {
  position: relative;
}

input[type="text"] {
  background: var(--input-bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.65rem 0.8rem;
  font-size: 1rem;
  width: 100%;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input[type="text"]::placeholder {
  color: var(--muted);
  opacity: 0.7;
}

input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.18);
}

/* ============ Primary button ============ */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 0.25rem;
  transition: transform 0.15s ease, box-shadow 0.2s ease, filter 0.2s ease;
  box-shadow: 0 8px 22px rgba(56, 189, 248, 0.28);
}

.btn-primary:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
  box-shadow: 0 12px 28px rgba(56, 189, 248, 0.38);
}

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

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-icon {
  width: 18px;
  height: 18px;
}

/* ============ Suggestions dropdown ============ */
.suggestions {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--card-solid);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-top: 0.3rem;
  z-index: 20;
  max-height: 220px;
  overflow-y: auto;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

.suggestions.hidden {
  display: none;
}

.suggestion {
  padding: 0.55rem 0.8rem;
  cursor: pointer;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.suggestion:hover,
.suggestion.active {
  background: var(--border-soft);
}

.suggestion .code {
  color: var(--accent);
  font-weight: 700;
  min-width: 2.2rem;
}

/* ============ Result card ============ */
.result {
  margin-top: 1.5rem;
  padding: 1.25rem;
  border-radius: 14px;
  border: 1px solid var(--border-soft);
  background: var(--input-bg);
  animation: fadeUp 0.35s ease;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.result.hidden {
  display: none;
}

.result.error {
  border-color: var(--error);
  color: var(--error);
  background: rgba(248, 113, 113, 0.08);
  font-size: 0.95rem;
  line-height: 1.5;
}

/* Loading state */
.result.loading {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2.5px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

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

.flight-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.flight-label {
  font-weight: 700;
  font-size: 1.08rem;
  letter-spacing: -0.01em;
}

.status-badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.status-badge::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  animation: pulse 1.8s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.45; transform: scale(0.8); }
}

.status-badge.on-time {
  background: rgba(74, 222, 128, 0.15);
  color: var(--success);
}

.status-badge.delayed {
  background: rgba(251, 191, 36, 0.15);
  color: var(--warning);
}

.status-badge.cancelled {
  background: rgba(248, 113, 113, 0.15);
  color: var(--error);
}

.status-badge.airborne {
  background: rgba(74, 222, 128, 0.15);
  color: var(--success);
}

.status-badge.onGround {
  background: rgba(148, 163, 184, 0.18);
  color: var(--muted);
}

/* Live / mock pills */
.live-pill,
.mock-pill {
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  padding: 0.22rem 0.55rem;
  border-radius: 999px;
  text-transform: uppercase;
}

.live-pill {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 0 12px rgba(56, 189, 248, 0.4);
}

.mock-pill {
  background: rgba(148, 163, 184, 0.15);
  color: var(--muted);
  border: 1px solid var(--border);
}

/* ============ Live stats ============ */
.live-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.6rem;
  margin: 0.4rem 0 0.2rem;
}

.stat {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.6rem 0.7rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.stat-k {
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  font-weight: 600;
}

.stat-v {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

/* ============ Route ============ */
.route {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
}

.airport {
  text-align: center;
  min-width: 84px;
}

.airport .code {
  font-size: 1.6rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
}

.airport .city {
  color: var(--muted);
  font-size: 0.8rem;
  margin-top: 0.2rem;
}

.airport .time {
  font-size: 1.05rem;
  font-weight: 600;
  margin-top: 0.45rem;
}

.airport .tz {
  color: var(--muted);
  font-size: 0.72rem;
  margin-top: 0.15rem;
}

.route-mid {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  padding: 0 0.4rem;
}

.route-line {
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 2px;
  position: relative;
}

.route-line::before,
.route-line::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  transform: translateY(-50%);
}

.route-line::before { left: 0; }
.route-line::after  { right: 0; background: var(--accent-2); }

.route-duration {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 500;
}

/* ============ Map ============ */
.map-wrap {
  margin-top: 1.25rem;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-soft);
  background: var(--map-bg);
}

.map-wrap svg {
  display: block;
  width: 100%;
  height: auto;
}

.map-grid-line {
  stroke: var(--map-grid);
  stroke-width: 1;
}

.map-route {
  fill: none;
  stroke: url(#routeGradient);
  stroke-width: 2.5;
  stroke-linecap: round;
}

.map-point {
  fill: var(--accent);
}

.map-point-arr {
  fill: var(--accent-2);
}

.map-label {
  fill: var(--map-text);
  font-size: 11px;
  font-weight: 600;
  font-family: system-ui, sans-serif;
}

.map-sublabel {
  fill: var(--muted);
  font-size: 9px;
  font-family: system-ui, sans-serif;
}

.map-live-dot {
  fill: var(--accent);
  stroke: #fff;
  stroke-width: 2;
}

.map-live-pulse {
  fill: var(--accent);
  opacity: 0.35;
  transform-origin: center;
  transform-box: fill-box;
  animation: livePulse 2s ease-out infinite;
}

@keyframes livePulse {
  0%   { transform: scale(0.6); opacity: 0.5; }
  100% { transform: scale(2.4); opacity: 0; }
}

.map-heading {
  stroke: var(--accent-2);
  stroke-width: 2.5;
  stroke-linecap: round;
}

/* ============ Share / meta row ============ */
.result-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1.1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-soft);
  flex-wrap: wrap;
  gap: 0.5rem;
}

.share-link {
  color: var(--accent);
  font-size: 0.85rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 500;
}

.share-link:hover {
  text-decoration: underline;
}

.share-link svg {
  width: 14px;
  height: 14px;
}

.airline-name {
  color: var(--muted);
  font-size: 0.85rem;
}

/* ============ History ============ */
.history-section {
  margin-top: 1.5rem;
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 620px;
}

.history-section h2 {
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.6rem;
}

.history-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
}

.history-item {
  background: var(--card);
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.2s ease, transform 0.15s ease;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.history-item:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.history-item .h-code {
  color: var(--accent);
}

.history-empty {
  color: var(--muted);
  font-size: 0.85rem;
}

/* ============ Footer ============ */
.site-footer {
  margin-top: 1.5rem;
  color: var(--muted);
  font-size: 0.78rem;
  position: relative;
  z-index: 1;
  text-align: center;
}

/* ============ Responsive ============ */
@media (max-width: 480px) {
  .container {
    padding: 1.25rem;
  }

  .airport .code {
    font-size: 1.3rem;
  }

  .airport .time {
    font-size: 0.95rem;
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-controls {
    width: 100%;
    justify-content: space-between;
  }
}