/* Transit Flight — immersive space-flight UI
   Brand: dark navy / black / deep purple / blue / gold accent */

:root {
  --tf-bg: #050810;
  --tf-navy: #0a1128;
  --tf-deep: #0d0a18;
  --tf-purple: #1a1030;
  --tf-blue: #1e3a6e;
  --tf-gold: #c9a96e;
  --tf-gold-soft: #e8d5b0;
  --tf-text: #e8e4f0;
  --tf-muted: #9aa3b8;
  --tf-panel: rgba(10, 14, 28, 0.72);
  --tf-panel-border: rgba(201, 169, 110, 0.22);
  --tf-danger: #c4788a;
  --tf-font: "Noto Sans JP", "Hiragino Sans", "Segoe UI", system-ui, sans-serif;
  --tf-display: "Cinzel", "Cormorant Garamond", "Times New Roman", serif;
}

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

[hidden] {
  display: none !important;
}

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--tf-bg);
  color: var(--tf-text);
  font-family: var(--tf-font);
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

/* Full-viewport canvas host */
#tf-root {
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse at 50% 40%, #0d1230 0%, #050810 70%);
}

#tf-canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: grab;
}

#tf-canvas.is-dragging {
  cursor: grabbing;
}

/* ── Overlay layers ── */
.tf-overlay {
  position: fixed;
  inset: 0;
  z-index: 10;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.tf-overlay.is-hidden {
  opacity: 0;
  visibility: hidden;
}

.tf-overlay.is-interactive {
  pointer-events: auto;
}

/* ── Title screen ── */
#tf-title {
  background:
    radial-gradient(ellipse 70% 50% at 50% 45%, rgba(30, 22, 60, 0.55) 0%, transparent 70%),
    linear-gradient(180deg, rgba(5, 8, 16, 0.2) 0%, rgba(5, 8, 16, 0.75) 100%);
}

.tf-title-inner {
  text-align: center;
  padding: 32px 24px;
  max-width: 520px;
}

.tf-eyebrow {
  font-family: var(--tf-display);
  font-size: 0.72rem;
  letter-spacing: 0.35em;
  color: var(--tf-gold);
  opacity: 0.85;
  margin-bottom: 16px;
}

.tf-title-main {
  font-family: var(--tf-display);
  font-size: clamp(1.8rem, 6vw, 2.8rem);
  font-weight: 400;
  letter-spacing: 0.18em;
  color: var(--tf-gold-soft);
  margin-bottom: 8px;
  text-shadow: 0 0 40px rgba(201, 169, 110, 0.25);
}

.tf-title-sub {
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  color: var(--tf-muted);
  margin-bottom: 28px;
}

.tf-profile {
  display: grid;
  gap: 6px;
  margin: 0 auto 28px;
  padding: 14px 18px;
  background: var(--tf-panel);
  border: 1px solid var(--tf-panel-border);
  border-radius: 12px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  text-align: left;
  font-size: 0.88rem;
  max-width: 320px;
}

.tf-profile dt {
  color: var(--tf-muted);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
}

.tf-profile dd {
  color: var(--tf-text);
  margin-bottom: 6px;
}

.tf-profile dd:last-child {
  margin-bottom: 0;
}

.tf-btn {
  appearance: none;
  border: 1px solid rgba(201, 169, 110, 0.55);
  background: linear-gradient(180deg, rgba(40, 32, 20, 0.9), rgba(20, 16, 10, 0.95));
  color: var(--tf-gold-soft);
  font-family: var(--tf-display);
  font-size: 0.95rem;
  letter-spacing: 0.22em;
  padding: 14px 36px;
  border-radius: 999px;
  cursor: pointer;
  pointer-events: auto;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.15s, background 0.2s;
  min-height: 48px;
  min-width: 180px;
}

.tf-btn:hover,
.tf-btn:focus-visible {
  border-color: var(--tf-gold);
  box-shadow: 0 0 24px rgba(201, 169, 110, 0.25);
  outline: none;
}

.tf-btn:active {
  transform: scale(0.98);
}

.tf-btn-secondary {
  border-color: rgba(154, 163, 184, 0.35);
  background: rgba(12, 16, 32, 0.75);
  color: var(--tf-text);
  font-family: var(--tf-font);
  letter-spacing: 0.06em;
  font-size: 0.88rem;
}

.tf-btn-secondary:hover,
.tf-btn-secondary:focus-visible {
  border-color: rgba(201, 169, 110, 0.45);
  box-shadow: 0 0 16px rgba(201, 169, 110, 0.12);
}

.tf-hint {
  margin-top: 18px;
  font-size: 0.78rem;
  color: var(--tf-muted);
  line-height: 1.6;
}

.tf-hint strong {
  color: var(--tf-gold-soft);
  font-weight: 500;
}

/* YAML / URL load */
.tf-yaml-panel {
  width: min(420px, 100%);
  margin: 0 auto 20px;
  text-align: left;
}

.tf-url-input {
  width: 100%;
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid rgba(201, 169, 110, 0.22);
  background: rgba(6, 10, 22, 0.85);
  color: var(--tf-text);
  font-family: ui-monospace, "Cascadia Code", "Consolas", monospace;
  font-size: 0.78rem;
  line-height: 1.4;
  pointer-events: auto;
  touch-action: auto;
  user-select: text;
  -webkit-user-select: text;
  margin-bottom: 10px;
}

.tf-url-input:focus {
  outline: none;
  border-color: rgba(201, 169, 110, 0.55);
  box-shadow: 0 0 0 1px rgba(201, 169, 110, 0.2);
}

.tf-url-input::placeholder {
  color: rgba(154, 163, 184, 0.55);
}

.tf-yaml-details {
  margin-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 10px;
}

.tf-yaml-details summary {
  cursor: pointer;
  font-size: 0.78rem;
  color: var(--tf-muted);
  letter-spacing: 0.04em;
  list-style: none;
  margin-bottom: 8px;
}

.tf-yaml-details summary::-webkit-details-marker {
  display: none;
}

.tf-yaml-details summary::before {
  content: "▸ ";
  color: var(--tf-gold);
}

.tf-yaml-details[open] summary::before {
  content: "▾ ";
}

.tf-hint code {
  font-size: 0.72rem;
  color: var(--tf-gold-soft);
  word-break: break-all;
}

.tf-yaml-label {
  display: block;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--tf-muted);
  margin-bottom: 8px;
}

.tf-yaml-note {
  display: block;
  font-size: 0.7rem;
  opacity: 0.75;
  margin-top: 2px;
  letter-spacing: 0.02em;
}

.tf-yaml-input {
  width: 100%;
  min-height: 110px;
  max-height: 200px;
  resize: vertical;
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid rgba(201, 169, 110, 0.22);
  background: rgba(6, 10, 22, 0.85);
  color: var(--tf-text);
  font-family: ui-monospace, "Cascadia Code", "Consolas", monospace;
  font-size: 0.72rem;
  line-height: 1.45;
  pointer-events: auto;
  touch-action: auto;
  user-select: text;
  -webkit-user-select: text;
}

.tf-yaml-input:focus {
  outline: none;
  border-color: rgba(201, 169, 110, 0.55);
  box-shadow: 0 0 0 1px rgba(201, 169, 110, 0.2);
}

.tf-yaml-input::placeholder {
  color: rgba(154, 163, 184, 0.55);
}

.tf-yaml-status {
  min-height: 1.3em;
  margin: 8px 0 0;
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--tf-muted);
}

.tf-yaml-status.is-error {
  color: #e0a0ae;
}

.tf-yaml-status.is-ok {
  color: #9ed4b8;
}

.tf-yaml-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.tf-yaml-actions .tf-btn {
  flex: 1 1 auto;
  min-width: 140px;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  padding: 12px 16px;
  font-family: var(--tf-font);
}

/* ── HUD (flight) ── */
#tf-hud {
  position: fixed;
  inset: 0;
  z-index: 8;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.5s ease;
}

#tf-hud.is-visible {
  opacity: 1;
}

.tf-date-bar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  padding: 14px 16px 10px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  background: linear-gradient(180deg, rgba(5, 8, 16, 0.75) 0%, transparent 100%);
}

.tf-date-label {
  font-family: var(--tf-display);
  font-size: clamp(1rem, 3.5vw, 1.35rem);
  letter-spacing: 0.12em;
  color: var(--tf-gold-soft);
  text-shadow: 0 0 12px rgba(0, 0, 0, 0.8);
}

.tf-date-meta {
  font-size: 0.72rem;
  color: var(--tf-muted);
  letter-spacing: 0.06em;
  text-align: right;
  line-height: 1.5;
}

.tf-progress {
  position: absolute;
  top: 52px;
  left: 16px;
  right: 16px;
  height: 2px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 2px;
  overflow: hidden;
}

.tf-progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, rgba(100, 140, 220, 0.5), var(--tf-gold));
  border-radius: 2px;
  transition: width 0.1s linear;
}

.tf-controls-hint {
  position: absolute;
  bottom: 14px;
  left: 16px;
  right: 16px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 12px;
  font-size: 0.72rem;
  color: var(--tf-muted);
}

.tf-pause-badge {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(201, 169, 110, 0.35);
  background: rgba(10, 14, 28, 0.7);
  color: var(--tf-gold-soft);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  opacity: 0;
  transition: opacity 0.25s;
}

.tf-pause-badge.is-on {
  opacity: 1;
}

/* Floating event card during flight */
#tf-event-card {
  position: fixed;
  left: 50%;
  bottom: 56px;
  transform: translateX(-50%) translateY(12px);
  z-index: 9;
  width: min(420px, calc(100% - 28px));
  padding: 16px 18px;
  background: var(--tf-panel);
  border: 1px solid var(--tf-panel-border);
  border-radius: 14px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  pointer-events: auto;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, transform 0.35s ease, visibility 0.35s;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

#tf-event-card.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.tf-event-level {
  display: inline-block;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--tf-gold);
  margin-bottom: 6px;
}

.tf-event-title {
  font-family: var(--tf-display);
  font-size: clamp(0.95rem, 3.2vw, 1.15rem);
  letter-spacing: 0.08em;
  color: var(--tf-gold-soft);
  margin-bottom: 4px;
  line-height: 1.35;
}

.tf-event-ja {
  font-size: 0.82rem;
  color: var(--tf-muted);
  margin-bottom: 10px;
}

.tf-event-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  font-size: 0.78rem;
  color: var(--tf-text);
  margin-bottom: 8px;
}

.tf-event-meta span {
  opacity: 0.9;
}

.tf-event-theme {
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--tf-text);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 8px;
}

/* ── End screen ── */
#tf-end {
  background: linear-gradient(180deg, rgba(5, 8, 16, 0.35) 0%, rgba(5, 8, 16, 0.88) 100%);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-y;
}

.tf-end-inner {
  width: min(480px, calc(100% - 32px));
  margin: 40px auto;
  padding: 28px 22px;
  background: var(--tf-panel);
  border: 1px solid var(--tf-panel-border);
  border-radius: 16px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  text-align: center;
  pointer-events: auto;
}

.tf-end-inner h2 {
  font-family: var(--tf-display);
  font-size: 1.35rem;
  letter-spacing: 0.16em;
  color: var(--tf-gold-soft);
  margin-bottom: 8px;
}

.tf-end-lead {
  font-size: 0.88rem;
  color: var(--tf-muted);
  margin-bottom: 20px;
  line-height: 1.6;
}

.tf-summary-list {
  list-style: none;
  text-align: left;
  margin: 0 0 22px;
  display: grid;
  gap: 10px;
}

.tf-summary-list li {
  padding: 12px 14px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.tf-summary-list .s-date {
  font-size: 0.72rem;
  color: var(--tf-gold);
  letter-spacing: 0.06em;
  margin-bottom: 2px;
}

.tf-summary-list .s-title {
  font-size: 0.9rem;
  color: var(--tf-text);
  margin-bottom: 2px;
}

.tf-summary-list .s-theme {
  font-size: 0.8rem;
  color: var(--tf-muted);
  line-height: 1.45;
}

.tf-end-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: stretch;
}

/* ── Error banner ── */
#tf-error {
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 30;
  width: min(400px, calc(100% - 32px));
  padding: 24px 20px;
  background: rgba(20, 12, 18, 0.95);
  border: 1px solid rgba(196, 120, 138, 0.4);
  border-radius: 14px;
  text-align: center;
  pointer-events: auto;
}

#tf-error h2 {
  font-size: 1rem;
  color: var(--tf-danger);
  margin-bottom: 8px;
}

#tf-error p {
  font-size: 0.88rem;
  color: var(--tf-muted);
  line-height: 1.55;
  margin-bottom: 16px;
}

/* Loading */
#tf-loading {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--tf-bg);
  color: var(--tf-muted);
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  transition: opacity 0.4s ease;
}

#tf-loading.is-hidden {
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .tf-overlay,
  #tf-hud,
  #tf-event-card,
  .tf-btn,
  .tf-progress-fill,
  .tf-pause-badge {
    transition: none !important;
  }
}

/* Mobile */
@media (max-width: 600px) {
  .tf-title-inner {
    padding: 24px 16px;
  }

  .tf-btn {
    width: 100%;
    max-width: 280px;
    font-size: 0.9rem;
    padding: 14px 24px;
  }

  .tf-date-bar {
    padding: 12px 12px 8px;
  }

  .tf-controls-hint {
    font-size: 0.68rem;
    bottom: 10px;
    left: 12px;
    right: 12px;
  }

  #tf-event-card {
    bottom: 48px;
    padding: 14px 14px;
  }

  .tf-end-inner {
    margin: 24px auto;
    padding: 22px 16px;
  }
}