:root {
  color-scheme: light;
  --ink: #102033;
  --muted: #607086;
  --line: #d6e3ee;
  --surface: rgba(255, 255, 255, 0.9);
  --mist: #eef6fb;
  --sky: #cfe8f7;
  --blue: #1167a8;
  --blue-dark: #064777;
  --blue-soft: #e6f3fb;
  --rail: #2d8fc3;
  --sun: #f4b74c;
  --red: #d94f5c;
  --shadow: 0 20px 52px rgba(18, 76, 121, 0.15);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.34), rgba(238, 246, 251, 0.7) 44%, #f8fbfd 78%),
    url("shinkansenmeetsfuji.png") top center / max(1280px, 100vw) auto no-repeat,
    linear-gradient(180deg, rgba(207, 232, 247, 0.92), rgba(238, 246, 251, 0.86) 44%, #f8fbfd),
    radial-gradient(circle at 84% 12%, rgba(244, 183, 76, 0.25), transparent 26%),
    linear-gradient(115deg, transparent 0 61%, rgba(17, 103, 168, 0.08) 61% 63%, transparent 63%);
  overflow-x: hidden;
}

button {
  font: inherit;
}

.app-shell {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
  padding: 34px 0 56px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: start;
  min-height: 350px;
  padding: 42px 0 110px;
  position: relative;
  isolation: isolate;
}

.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 770px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.84), rgba(255, 255, 255, 0.3) 54%, rgba(255, 255, 255, 0.06));
  pointer-events: none;
  z-index: 0;
}

.hero::after {
  content: none;
}

.kicker,
.eyebrow {
  margin: 0 0 10px;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  max-width: 980px;
  margin-bottom: 18px;
  font-size: clamp(2rem, 5.4vw, 4.65rem);
  line-height: 1.02;
  letter-spacing: 0;
}

.title-line {
  display: inline-block;
  white-space: nowrap;
}

.no-break {
  white-space: nowrap;
}

h1 small {
  display: block;
  margin-top: 12px;
  color: var(--blue-dark);
  font-size: clamp(1.05rem, 2.4vw, 1.55rem);
  font-weight: 800;
}

h2 {
  margin-bottom: 16px;
  font-size: 1.35rem;
  letter-spacing: 0;
}

.lead {
  max-width: 630px;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.8;
}

.language-switch {
  display: flex;
  gap: 8px;
  padding: 5px;
  border: 1px solid rgba(17, 103, 168, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 8px 24px rgba(18, 76, 121, 0.1);
  position: relative;
  z-index: 3;
}

.lang-button,
.direction-tab,
.ghost-button,
.train-card {
  border: 0;
  cursor: pointer;
}

.lang-button {
  min-height: 42px;
  padding: 0 14px;
  border-radius: 999px;
  color: var(--muted);
  background: transparent;
  font-weight: 800;
}

.lang-button.active {
  color: #fff;
  background: var(--blue);
}

.planner,
.timeline-card,
.tips-band {
  border: 1px solid rgba(17, 103, 168, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.planner {
  padding: 26px;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: end;
}

.section-heading.compact {
  margin-bottom: 8px;
}

.direction-tabs {
  display: grid;
  gap: 8px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--blue-soft);
}

.direction-tabs {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 6px 0 14px;
}

.time-jumps {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 -4px;
  padding: 4px 4px 2px;
}

.time-jump {
  flex: 0 0 auto;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid rgba(17, 103, 168, 0.18);
  border-radius: 999px;
  color: var(--blue-dark);
  background: rgba(255, 255, 255, 0.82);
  font-weight: 850;
  cursor: pointer;
}

.time-jump:hover {
  border-color: rgba(17, 103, 168, 0.42);
  background: #fff;
}

.direction-tab,
.train-card {
  min-height: 48px;
  border-radius: 8px;
  color: var(--blue-dark);
  background: transparent;
  font-weight: 850;
}

.direction-tab.active,
.train-card.active {
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  box-shadow: 0 10px 24px rgba(17, 103, 168, 0.18);
}

.cover-flow {
  display: grid;
  grid-template-columns: 1fr;
  margin: 18px -26px 0;
  min-height: 230px;
  padding: 18px 26px 30px;
  overflow: hidden;
  perspective: 900px;
  place-items: center;
  position: relative;
  touch-action: pan-y;
  outline: none;
}

.cover-flow:focus-visible {
  box-shadow: inset 0 0 0 3px rgba(17, 103, 168, 0.18);
}

.train-card {
  grid-area: 1 / 1;
  width: min(280px, 72vw);
  min-height: 130px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #fff;
  text-align: left;
  display: grid;
  gap: 10px;
  align-content: start;
  transform-origin: center;
  transition: transform 420ms cubic-bezier(0.16, 0.84, 0.28, 1), opacity 420ms ease, box-shadow 240ms ease, border-color 240ms ease;
  user-select: none;
  -webkit-user-select: none;
}

.train-card:hover,
.train-card.active {
  border-color: rgba(17, 103, 168, 0.46);
  box-shadow: 0 14px 26px rgba(18, 76, 121, 0.14);
}

.train-card.active {
  position: relative;
  background:
    linear-gradient(180deg, #ffffff, rgba(230, 243, 251, 0.92)),
    #fff;
  box-shadow: 0 24px 46px rgba(18, 76, 121, 0.24);
}

.train-name {
  color: var(--blue-dark);
  font-size: 1.05rem;
  font-weight: 900;
}

.train-number {
  color: var(--ink);
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  font-weight: 950;
  line-height: 1;
}

.train-route,
.train-window {
  color: var(--muted);
  line-height: 1.45;
}

.train-window {
  color: var(--blue);
  font-weight: 900;
}

.result-layout {
  margin-top: 20px;
}

.timeline-card {
  padding: 24px;
}

.notice {
  margin-top: 16px;
  padding: 14px 16px;
  border-left: 4px solid var(--sun);
  border-radius: 6px;
  background: #fff8e8;
  color: #58431b;
  line-height: 1.65;
}

.view-tools {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.view-tools p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.tool-label {
  color: var(--blue-dark) !important;
  font-size: 0.8rem;
  font-weight: 900;
}

.ghost-button {
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--blue-dark);
  background: #fff;
  font-weight: 850;
}

.timeline-table {
  display: grid;
  gap: 6px;
}

.timeline-row {
  display: grid;
  grid-template-columns: 0.75fr 1fr 1.2fr;
  gap: 10px;
  align-items: center;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.timeline-header {
  min-height: 38px;
  color: var(--muted);
  background: transparent;
  border-color: transparent;
  font-size: 0.8rem;
  font-weight: 900;
}

.timeline-row span:last-child {
  color: var(--blue);
  font-weight: 900;
}

.view-row {
  border-color: rgba(244, 183, 76, 0.72);
  background: #fff8e8;
}

.view-row span:first-child {
  color: #8b5a00;
  font-weight: 950;
}

.tips-band {
  display: grid;
  grid-template-columns: 0.55fr 1fr;
  gap: 20px;
  margin-top: 20px;
  padding: 22px 24px;
}

.tips-band ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
  line-height: 1.8;
}

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: min(420px, calc(100% - 40px));
  padding: 16px 18px;
  border-radius: 8px;
  color: #fff;
  background: var(--blue-dark);
  box-shadow: var(--shadow);
  line-height: 1.55;
}

@media (max-width: 980px) {
  .tips-band {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 780px) {
  body {
    background:
      linear-gradient(180deg, rgba(255, 255, 255, 0.28), rgba(238, 246, 251, 0.64) 34%, #f8fbfd 70%),
      url("shinkansenmeetsfuji.png") 58% 0 / auto 340px no-repeat,
      linear-gradient(180deg, rgba(207, 232, 247, 0.92), rgba(238, 246, 251, 0.86) 44%, #f8fbfd);
  }

  .app-shell {
    width: min(100% - 22px, 680px);
    padding-top: 18px;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: 320px;
    padding-top: 28px;
    padding-bottom: 40px;
  }

  .hero::before {
    inset: 0;
    height: auto;
    clip-path: none;
  }

  .hero::after {
    content: none;
  }

  h1 {
    font-size: clamp(1.85rem, 8.7vw, 3.15rem);
  }

  .language-switch {
    width: fit-content;
  }

  .planner,
  .timeline-card,
  .tips-band {
    padding: 18px;
  }

  .timeline-row {
    grid-template-columns: 1fr;
  }

  .direction-tabs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .direction-tab {
    min-height: 48px;
    padding: 0 8px;
    font-size: clamp(0.78rem, 3.3vw, 0.95rem);
    white-space: nowrap;
  }

  .cover-flow {
    margin-inline: -18px;
    padding-inline: 18px;
  }

  .train-card {
    width: min(230px, 70vw);
  }

  .timeline-header {
    display: none;
  }

  .timeline-row {
    grid-template-columns: 0.72fr 1fr;
    align-items: center;
  }

  .timeline-row span:first-child {
    grid-column: 2;
    grid-row: 1;
  }

  .timeline-row span:nth-child(2) {
    grid-column: 1;
    grid-row: 1;
    font-weight: 950;
  }

  .timeline-row span:last-child {
    grid-column: 1 / -1;
  }

  .view-tools {
    align-items: stretch;
    flex-direction: column;
  }
}