:root {
  --ink: #211721;
  --muted: #766777;
  --accent: #ad5aac;
  --accent-strong: #c84d9e;
  --blue: #2f78bd;
  --blue-deep: #163f78;
  --line: rgba(173, 90, 172, 0.18);
  --surface: rgba(255, 255, 255, 0.82);
  --shadow: 0 24px 80px rgba(36, 25, 50, 0.12);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  min-height: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 16% 6%, rgba(201, 77, 158, 0.16) 0 10%, transparent 32%),
    radial-gradient(circle at 86% 18%, rgba(47, 120, 189, 0.14) 0 12%, transparent 34%),
    radial-gradient(circle at 48% 92%, rgba(47, 120, 189, 0.12) 0 16%, transparent 38%),
    linear-gradient(180deg, #ffffff 0%, #ffffff 54%, #f7fbff 100%);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.chat-shell {
  width: min(1120px, calc(100% - 40px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 26px 0 190px;
}

.brand-header {
  display: flex;
  justify-content: center;
  margin-bottom: clamp(24px, 4vh, 46px);
}

.brand-logo {
  width: clamp(158px, 16vw, 236px);
  height: auto;
  object-fit: contain;
}

.hero-chat {
  display: grid;
  justify-items: center;
  text-align: center;
}

h1 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(46px, 7vw, 92px);
  line-height: 0.95;
  letter-spacing: 0;
}

.hero-chat p {
  max-width: 640px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.55;
}

.composer-panel {
  position: sticky;
  bottom: 0;
  z-index: 10;
  display: grid;
  justify-items: center;
  width: min(820px, 100%);
  margin: 18px auto 0;
  padding: 12px 0 18px;
}

.composer-panel::before {
  position: absolute;
  inset: -36px -24px 0;
  z-index: -1;
  content: "";
  background: linear-gradient(180deg, rgba(255, 255, 255, 0), rgba(250, 253, 255, 0.96) 48%, rgba(255, 255, 255, 0.98) 100%);
  pointer-events: none;
}

.onboarding-active .chat-shell {
  padding-bottom: 54px;
}

.chat-started .hero-chat {
  display: none;
}

.chat-started .prompt-row {
  display: none;
}

.onboarding-active .composer-panel {
  display: none;
}

.onboarding-active .composer-panel::before {
  display: none;
}

.ask-box {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  width: min(780px, 100%);
  margin-top: 10px;
  padding: 10px;
  border: 1px solid rgba(173, 90, 172, 0.22);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--shadow);
  backdrop-filter: blur(22px);
}

.ask-box textarea {
  width: 100%;
  min-height: 78px;
  max-height: 160px;
  resize: none;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  padding: 18px 18px 15px;
  font-size: 16px;
  line-height: 1.45;
}

.ask-box textarea::placeholder {
  color: rgba(117, 101, 117, 0.72);
}

.ask-box button,
.secondary-action,
.card-heading button {
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--blue));
  color: #fff;
  font-weight: 900;
  box-shadow: 0 16px 36px rgba(47, 120, 189, 0.24);
}

.ask-box button {
  min-width: 96px;
  height: 52px;
  padding: 0 22px;
}

.prompt-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 0;
}

.prompt-row button {
  min-height: 42px;
  border: 1px solid rgba(173, 90, 172, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.62);
  color: #5f4d61;
  padding: 0 15px;
  font-size: 13px;
  font-weight: 850;
  backdrop-filter: blur(14px);
}

.conversation-card,
.onboarding-card,
.route-card,
.advice-card,
.itinerary-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(22px);
}

.onboarding-card {
  width: min(920px, 100%);
  margin: 30px auto 0;
  padding: 24px;
  background:
    radial-gradient(circle at 0% 0%, rgba(201, 77, 158, 0.13), transparent 32%),
    radial-gradient(circle at 100% 20%, rgba(47, 120, 189, 0.14), transparent 34%),
    rgba(255, 255, 255, 0.82);
}

.onboarding-copy {
  display: grid;
  gap: 8px;
  max-width: 620px;
  margin: 0 auto 22px;
  text-align: center;
}

.onboarding-copy span,
.profile-summary {
  color: var(--accent);
  font-size: 11px;
  font-weight: 950;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.onboarding-copy h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1;
}

.onboarding-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.5;
}

.profile-steps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.profile-step {
  border: 1px solid rgba(173, 90, 172, 0.14);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.72);
  padding: 16px;
}

.profile-step h3 {
  margin: 0 0 12px;
  font-size: 16px;
}

.choice-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.choice-grid button {
  min-height: 38px;
  border: 1px solid rgba(173, 90, 172, 0.16);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  color: #5f4d61;
  padding: 0 13px;
  font-size: 12px;
  font-weight: 900;
}

.choice-grid button.selected {
  border-color: transparent;
  background: linear-gradient(135deg, #b35ab0, #3d82c8);
  color: #fff;
  box-shadow: 0 14px 28px rgba(47, 120, 189, 0.18);
}

.profile-summary {
  margin-top: 18px;
  text-align: center;
  text-transform: none;
  letter-spacing: 0;
  color: #5f4d61;
}

.start-chat-button {
  display: block;
  min-height: 46px;
  margin: 16px auto 0;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--blue));
  color: #fff;
  padding: 0 22px;
  font-weight: 950;
  box-shadow: 0 16px 36px rgba(47, 120, 189, 0.22);
}

.start-chat-button:disabled {
  cursor: not-allowed;
  filter: grayscale(0.4);
  opacity: 0.55;
  box-shadow: none;
}

.conversation-card {
  width: min(780px, 100%);
  margin: 28px auto 0;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
}

.chat {
  display: grid;
  gap: 14px;
  max-height: none;
  overflow: visible;
  overscroll-behavior: contain;
}

.message {
  display: flex;
  gap: 10px;
  max-width: 78%;
}

.message.user {
  justify-self: end;
}

.message img {
  width: 30px;
  height: 30px;
  object-fit: contain;
  flex: 0 0 auto;
  margin-top: 2px;
}

.message div {
  border: 1px solid rgba(173, 90, 172, 0.12);
  border-radius: 18px 18px 18px 6px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 14px 42px rgba(36, 25, 50, 0.08);
}

.message.user div {
  border-color: transparent;
  border-radius: 18px 18px 6px 18px;
  background: linear-gradient(135deg, #b35ab0, #3d82c8);
  color: #fff;
  box-shadow: 0 16px 40px rgba(47, 120, 189, 0.18);
}

.message strong {
  display: block;
  margin-bottom: 4px;
  font-size: 12px;
}

.message p {
  margin: 0;
  font-size: 14px;
  line-height: 1.45;
}

.result-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.85fr;
  gap: 18px;
  width: min(940px, 100%);
  margin: 24px auto 0;
}

.version-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 36px;
  color: rgba(117, 101, 117, 0.72);
  font-size: 12px;
  font-weight: 800;
  text-align: center;
}

.restart-link {
  min-height: 30px;
  border: 1px solid rgba(173, 90, 172, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: #6b5d6d;
  padding: 0 12px;
  font-size: 12px;
  font-weight: 900;
}

.route-card,
.advice-card,
.itinerary-card {
  padding: 20px;
}

.itinerary-card {
  grid-column: 1 / -1;
}

.card-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.card-heading span,
.advice-card > span {
  color: var(--accent);
  font-size: 11px;
  font-weight: 950;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.card-heading strong {
  color: #248b73;
  font-size: 32px;
  line-height: 1;
}

.route-card h2,
.advice-card h2 {
  margin: 8px 0 0;
  font-size: 24px;
  line-height: 1.1;
}

.route-line {
  display: grid;
  grid-template-columns: auto 1fr auto 1fr auto;
  align-items: center;
  gap: 10px;
  margin: 24px 0;
}

.route-line span {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--blue));
  color: #fff;
  font-weight: 950;
}

.route-line i {
  height: 2px;
  background: linear-gradient(90deg, var(--accent), rgba(47, 120, 189, 0.18));
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.metric-row div {
  border: 1px solid rgba(173, 90, 172, 0.13);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.66);
  padding: 13px;
}

.metric-row small {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.metric-row b {
  display: block;
  margin-top: 3px;
  font-size: 19px;
}

.advice-card {
  background:
    linear-gradient(135deg, rgba(255, 246, 235, 0.84), rgba(236, 248, 255, 0.82)),
    rgba(255, 255, 255, 0.76);
}

.advice-card p {
  margin: 12px 0 18px;
  color: #675867;
  font-size: 15px;
  line-height: 1.5;
}

.secondary-action,
.card-heading button {
  min-height: 38px;
  padding: 0 15px;
  font-size: 13px;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  border: 1px solid rgba(173, 90, 172, 0.13);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.68);
  padding: 13px;
}

.timeline strong {
  display: block;
  margin-bottom: 5px;
  color: var(--ink);
  font-size: 13px;
}

.timeline span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.timeline .active {
  border-color: rgba(173, 90, 172, 0.42);
  background: rgba(255, 255, 255, 0.92);
}

.timeline .active span {
  color: var(--ink);
}

@media (max-width: 760px) {
  body {
    background:
      radial-gradient(circle at 22% 2%, rgba(201, 77, 158, 0.18) 0 12%, transparent 34%),
      radial-gradient(circle at 92% 18%, rgba(47, 120, 189, 0.17) 0 14%, transparent 38%),
      radial-gradient(circle at 48% 100%, rgba(47, 120, 189, 0.18) 0 18%, transparent 44%),
      linear-gradient(180deg, #ffffff 0%, #ffffff 48%, #edf7ff 100%);
  }

  .chat-shell {
    width: min(100% - 28px, 520px);
    padding: 20px 0 178px;
  }

  .brand-header {
    margin-bottom: 34px;
  }

  .brand-logo {
    width: 156px;
    filter: drop-shadow(0 16px 34px rgba(8, 42, 84, 0.16));
  }

  .version-footer {
    color: rgba(68, 83, 105, 0.68);
  }

  h1 {
    max-width: 340px;
    color: var(--ink);
    font-size: 48px;
    text-shadow: none;
  }

  .hero-chat p {
    max-width: 330px;
    margin-top: 14px;
    color: var(--muted);
    font-size: 14px;
  }

  .ask-box {
    grid-template-columns: 1fr;
    gap: 8px;
    margin-top: 10px;
    padding: 9px;
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.9);
  }

  .ask-box textarea {
    min-height: 116px;
    padding: 15px;
    font-size: 15px;
  }

  .ask-box button {
    width: 100%;
    height: 48px;
  }

  .prompt-row {
    justify-content: flex-start;
    width: 100%;
    gap: 8px;
    margin-top: 14px;
  }

  .composer-panel {
    width: 100%;
    margin-top: 14px;
    padding-bottom: 14px;
  }

  .composer-panel::before {
    inset: -40px -14px 0;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0), rgba(246, 251, 255, 0.96) 45%, rgba(255, 255, 255, 0.98) 100%);
  }

  .onboarding-active .chat-shell {
    padding-bottom: 36px;
  }

  .onboarding-active .composer-panel {
    display: none;
  }

  .prompt-row button {
    flex: 1 1 auto;
    min-height: 38px;
    background: rgba(255, 255, 255, 0.82);
    color: #174b86;
    font-size: 12px;
  }

  .conversation-card,
  .onboarding-card,
  .route-card,
  .advice-card,
  .itinerary-card {
    border-color: rgba(173, 90, 172, 0.14);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 22px 54px rgba(10, 46, 96, 0.1);
  }

  .conversation-card {
    padding: 0;
    border: 0;
    background: transparent;
    box-shadow: none;
  }

  .onboarding-card {
    padding: 18px;
  }

  .profile-steps {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .profile-step {
    padding: 14px;
  }

  .choice-grid button {
    flex: 1 1 auto;
  }

  .chat {
    max-height: none;
    overflow: visible;
  }

  .message {
    max-width: 92%;
  }

  .message div {
    border-radius: 14px;
  }

  .result-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .route-card,
  .advice-card,
  .itinerary-card {
    padding: 16px;
  }

  .route-card h2,
  .advice-card h2 {
    font-size: 20px;
  }

  .route-line span {
    width: 48px;
    height: 48px;
  }

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