/* ==========================================================================
   Planner — a full-screen conversation with a journey rail.
   ========================================================================== */
html:has(body.plan-page) { overflow: hidden; }
.plan-page { overflow: hidden; }
.planner-app { position: fixed; inset: 0; display: grid; grid-template-rows: auto minmax(0, 1fr); }

/* ---------- Top bar ---------- */
.planner-bar {
  position: relative; z-index: 20; display: flex; align-items: center; gap: 1.2rem;
  height: 68px; padding: 0 var(--gutter); background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(18px) saturate(1.4); -webkit-backdrop-filter: blur(18px) saturate(1.4);
  border-bottom: 1px solid var(--line);
}
.planner-bar .brand-logo { width: 92px; height: 46px; }
.planner-heading { display: grid; line-height: 1.25; padding-left: 1.2rem; border-left: 1px solid var(--line); min-width: 0; }
.planner-heading strong { font-size: var(--fs-sm); font-weight: 650; }
.planner-heading span { color: var(--ink-3); font-size: var(--fs-xs); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.planner-bar .header-tools { margin-left: auto; }
.planner-exit { color: var(--ink-2); }
.planner-progress { position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; overflow: hidden; }
.planner-progress span {
  display: block; height: 100%; background: linear-gradient(90deg, var(--accent), var(--sky));
  transform: scaleX(0); transform-origin: left; transition: transform 1100ms var(--ease-out);
}

/* ---------- Layout ---------- */
.planner-layout { display: grid; grid-template-columns: 300px minmax(0, 1fr); min-height: 0; }
.planner-stage { position: relative; min-height: 0; view-transition-name: altier-prompt; }
.planner-body { height: 100%; overflow-y: auto; overscroll-behavior: contain; scroll-padding-top: 24px; outline: none; }
.planner-content {
  width: min(760px, calc(100% - 2 * var(--gutter))); margin: 0 auto; padding: clamp(1.6rem, 4vh, 3rem) 0 7rem;
  transition: width var(--d-step) var(--ease-soft);
}
.planner-content[data-step="results"], .planner-content[data-step="customize"] { width: min(900px, calc(100% - 2 * var(--gutter))); }
.planner-content[data-step="checkout"] { width: min(1120px, calc(100% - 2 * var(--gutter))); }
.planner-content[data-step="receipt"] { width: min(900px, calc(100% - 2 * var(--gutter))); }
.motion-ghost { list-style: none; }
.assistant-loading { color: var(--ink-3); }

/* ---------- Journey rail ---------- */
.journey-rail {
  --item: 74px; --rail-progress: 0;
  position: relative; display: flex; flex-direction: column; padding: 2.4rem 1.6rem 1.6rem 2rem;
  border-right: 1px solid var(--line); background: linear-gradient(180deg, var(--bg), var(--bg-deep));
}
.journey-rail ol { position: relative; z-index: 1; margin: 0; padding: 0; list-style: none; }
.journey-rail li { display: grid; grid-template-columns: 22px 1fr; gap: .9rem; height: var(--item); color: var(--ink-3); }
.rail-dot {
  position: relative; width: 14px; height: 14px; margin: 4px 0 0 4px; border-radius: 50%;
  background: var(--bg); border: 1.5px solid var(--line-strong);
  transition: background-color var(--d-ui) var(--ease-out), border-color var(--d-ui) var(--ease-out), transform var(--d-ui) var(--ease-out);
}
.rail-text { display: grid; align-content: start; gap: .1rem; }
.rail-text > span { font-size: var(--fs-sm); font-weight: 600; transition: color var(--d-ui) var(--ease-out); }
.rail-text small { font-size: var(--fs-xs); color: var(--ink-3); opacity: .8; }
.journey-rail li.is-done { color: var(--ink-2); }
.journey-rail li.is-done .rail-dot { background: var(--accent); border-color: var(--accent); }
.journey-rail li.is-current { color: var(--ink); }
.journey-rail li.is-current .rail-dot { border-color: transparent; background: var(--accent-tint); transform: scale(1.9); }
.rail-track { position: absolute; left: calc(2rem + 10px); top: calc(2.4rem + 11px); width: 2px; height: calc(var(--item) * 6); background: var(--line); border-radius: 2px; }
.rail-fill {
  display: block; width: 100%; height: 100%; border-radius: inherit; background: linear-gradient(180deg, var(--accent), var(--sky));
  transform: scaleY(var(--rail-progress)); transform-origin: top; transition: transform 1100ms var(--ease-in-out);
}
.rail-plane {
  position: absolute; z-index: 2; left: calc(2rem + 1px); top: calc(2.4rem + 2px); width: 20px; height: 20px; color: var(--accent);
  transform: translateY(calc(var(--rail-progress) * var(--item) * 6)); transition: transform 1100ms var(--ease-in-out);
  filter: drop-shadow(0 0 8px var(--accent-glow));
}
.rail-plane svg { width: 100%; height: 100%; }
html.motion-ok .rail-plane svg { animation: twinkle 4.8s var(--ease-in-out) infinite; }
.rail-note { margin-top: auto; padding-top: 2rem; color: var(--ink-3); font-size: var(--fs-xs); line-height: 1.5; }

/* ---------- Conversation ---------- */
.assistant-progress-row { display: flex; align-items: center; justify-content: flex-end; gap: 1rem; min-height: 40px; margin-bottom: .6rem; }
.assistant-progress-row .assistant-progress { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.assistant-progress { margin: 0; color: var(--ink-3); font-size: var(--fs-xs); font-weight: 600; letter-spacing: .02em; outline: none; }
.assistant-back {
  display: inline-flex; align-items: center; gap: .4rem; min-height: 36px; padding: 0 .9rem 0 .7rem; border: 1px solid var(--line);
  border-radius: var(--r-pill); background: var(--surface); color: var(--ink-2); font-size: var(--fs-sm); font-weight: 600;
  transition: border-color var(--d-quick) ease, transform var(--d-press) var(--ease-out), color var(--d-quick) ease;
}
.assistant-back svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; transition: transform var(--d-ui) var(--ease-out); }
@media (hover: hover) and (pointer: fine) { .assistant-back:hover { border-color: var(--line-strong); color: var(--ink); } .assistant-back:hover svg { transform: translateX(-3px); } }
.assistant-back:active { transform: scale(.96); }

.chat-message { display: flex; gap: .85rem; margin: 0 0 1.1rem; }
.chat-message.assistant { align-items: flex-start; }
.chat-avatar {
  display: grid; place-items: center; flex: 0 0 34px; width: 34px; height: 34px; border-radius: 12px; color: #fff;
  background: linear-gradient(145deg, var(--navy-2), var(--accent)); box-shadow: 0 6px 16px -6px var(--accent-glow);
}
.chat-avatar svg { width: 17px; height: 17px; }
.chat-message.assistant .chat-bubble {
  margin: 0; padding-top: .3rem; color: var(--ink); font-size: clamp(1.05rem, 1.6vw, 1.22rem); font-weight: 500; letter-spacing: -.01em; line-height: 1.5;
}
html[lang="zh-CN"] .chat-message.assistant .chat-bubble { letter-spacing: 0; }
.chat-message.user { flex-direction: column; align-items: flex-end; gap: .35rem; margin: .4rem 0 1.4rem; }
.chat-message.user .chat-bubble {
  position: relative; overflow: hidden; max-width: min(560px, 88%); margin: 0; padding: .9rem 1.15rem;
  border-radius: 22px 22px 6px 22px; background: var(--accent-soft); color: var(--ink); font-size: 1.02rem; line-height: 1.6;
}
.message-edit {
  min-height: 30px; padding: 0 .5rem; border: 0; background: none; color: var(--ink-3); font-size: var(--fs-xs); font-weight: 600;
  transition: color var(--d-quick) ease;
}
@media (hover: hover) and (pointer: fine) { .message-edit:hover { color: var(--accent-ink); } }

/* Entities: what the interpreter recognised. During scanning they light up one by one. */
.entity {
  padding: .05em .2em; margin: 0 -.05em; border-radius: 6px; color: inherit; font-weight: 600;
  background: linear-gradient(90deg, color-mix(in srgb, var(--accent) 22%, transparent), color-mix(in srgb, var(--accent) 22%, transparent)) no-repeat left / 100% 100%;
  box-shadow: inset 0 -1.5px 0 var(--accent);
}
html.motion-ok .is-scanning .entity {
  background-size: 0% 100%; box-shadow: inset 0 -1.5px 0 transparent;
  animation: entity-hit 700ms var(--ease-out) calc(500ms + var(--i, 0) * 330ms) forwards;
}
@keyframes entity-hit {
  60% { background-size: 100% 100%; box-shadow: inset 0 -1.5px 0 var(--accent), 0 0 0 3px var(--accent-tint); }
  to { background-size: 100% 100%; box-shadow: inset 0 -1.5px 0 var(--accent); }
}
html.motion-ok .chat-bubble.is-scanning::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(100deg, transparent 20%, rgba(255, 255, 255, .55) 50%, transparent 80%);
  transform: translateX(-100%); animation: scan 1500ms var(--ease-in-out) 150ms 2;
}
html[data-theme="dark"] .chat-bubble.is-scanning::after { background: linear-gradient(100deg, transparent 20%, rgba(156, 199, 255, .22) 50%, transparent 80%); }
@keyframes scan { to { transform: translateX(100%); } }

/* Thinking trace: three quiet lines that resolve in sequence. */
.thinking-trace { display: grid; gap: .55rem; margin: .4rem 0 1.4rem 3.1rem; padding: 0; list-style: none; }
.thinking-trace li {
  position: relative; display: flex; align-items: center; gap: .7rem; color: var(--ink-3); font-size: var(--fs-sm);
}
.thinking-trace li::before {
  content: ""; flex: 0 0 14px; width: 14px; height: 14px; border-radius: 50%;
  border: 1.6px solid var(--line-strong); border-top-color: var(--accent);
}
html.motion-ok .thinking-trace li { opacity: 0; animation: trace-in 600ms var(--ease-out) calc(var(--i) * 780ms) forwards; }
@keyframes trace-in { from { opacity: 0; transform: translateY(8px); filter: blur(4px); } to { opacity: 1; transform: none; filter: none; } }
html.motion-ok .thinking-trace li::before { animation: spin 800ms linear infinite, resolve 300ms var(--ease-out) calc(var(--i) * 780ms + 760ms) forwards; }
html.motion-ok .thinking-trace li { --done: calc(var(--i) * 780ms + 760ms); }
html.motion-ok .thinking-trace li span, .thinking-trace li { transition: color 300ms ease; }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes resolve {
  to { border-color: var(--accent); background: var(--accent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 14' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m4 7.2 2 2 4-4.4'/%3E%3C/svg%3E") center / 100% no-repeat; transform: none; }
}

/* ---------- Composer ---------- */
.conversation-step { display: grid; }
.intent-composer {
  position: relative; display: grid; margin: 0 0 1.2rem 3.1rem; padding: 1.05rem 1.1rem .8rem 1.25rem;
  border: 1px solid var(--line-strong); border-radius: 24px; background: var(--surface); box-shadow: var(--shadow-2);
  transition: border-color var(--d-ui) var(--ease-out), box-shadow var(--d-ui) var(--ease-out);
}
.intent-composer:focus-within { border-color: var(--accent); box-shadow: 0 0 0 5px var(--accent-tint), var(--shadow-2); }
.intent-textarea {
  width: 100%; min-height: 96px; max-height: 280px; padding: 0; border: 0; outline: 0; resize: none; background: transparent; color: var(--ink);
  font-size: clamp(1.05rem, 1.6vw, 1.18rem); line-height: 1.55; field-sizing: content;
}
.composer-bar { display: flex; align-items: center; gap: .8rem; margin-top: .6rem; }
.composer-hint { color: var(--ink-3); font-size: var(--fs-xs); }
.composer-bar .sample-link { margin-left: auto; }
.composer-submit {
  display: inline-flex; align-items: center; gap: .5rem; min-height: 44px; margin-left: auto; padding: 0 1rem 0 1.15rem; border: 0;
  border-radius: var(--r-pill); background: var(--accent); color: #fff; font-size: var(--fs-sm); font-weight: 650;
  box-shadow: 0 10px 24px -10px var(--accent-glow);
  transition: transform var(--d-press) var(--ease-out), background-color var(--d-quick) ease, opacity var(--d-quick) ease;
}
.composer-bar .sample-link + .composer-submit { margin-left: 0; }
.composer-submit svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; transition: transform var(--d-ui) var(--ease-out); }
@media (hover: hover) and (pointer: fine) { .composer-submit:hover svg { transform: translateX(3px); } }
.composer-submit:active:not(:disabled) { transform: scale(.96); }
.composer-submit:disabled { opacity: .55; }
.mention-suggestions {
  display: grid; gap: 2px; margin-top: .6rem; padding: 4px; border: 1px solid var(--line); border-radius: var(--r-md); background: var(--surface-2);
}
html.motion-ok .mention-suggestions:not([hidden]) { animation: rise-in 420ms var(--ease-out) both; }
.mention-option {
  min-height: 40px; padding: .4rem .75rem; border: 0; border-radius: 10px; background: none; color: var(--ink-2); text-align: left; font-size: var(--fs-sm);
  transition: background-color 160ms ease, color 160ms ease;
}
@media (hover: hover) and (pointer: fine) { .mention-option:hover { background: var(--accent-tint); color: var(--ink); } }

/* ---------- Interpretation card ---------- */
.interpretation-card {
  position: relative; display: grid; gap: 1.2rem; margin: 0 0 1.4rem 3.1rem; padding: clamp(1.2rem, 2.6vw, 1.8rem);
  border: 1px solid var(--line); border-radius: var(--r-xl); background: var(--surface); box-shadow: var(--shadow-2); overflow: hidden;
}
.interpretation-card::before {
  content: ""; position: absolute; inset: 0 0 auto; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--sky), transparent);
}
.interpretation-head { display: grid; grid-template-columns: auto 1fr; column-gap: .65rem; align-items: center; }
.interpretation-star { width: 18px; height: 18px; color: var(--accent); }
html.motion-ok .interpretation-star { animation: twinkle 4.8s var(--ease-in-out) infinite; }
.interpretation-head h3 { font-size: var(--fs-md); letter-spacing: -.015em; }
.interpretation-note { grid-column: 2; margin-top: .15rem; color: var(--ink-3); font-size: var(--fs-xs); }
.field-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem 1.2rem; }
.field.wide, .field-grid > .wide { grid-column: 1 / -1; }
.airport-stack { display: grid; align-content: start; gap: .55rem; }
.airport-slot-row { display: flex; align-items: flex-end; gap: .45rem; }
.airport-slot-row > .field { flex: 1; }
.airport-field label { color: var(--ink-2); font-size: .82rem; font-weight: 600; }
.airport-combobox { position: relative; }
.airport-options {
  position: absolute; z-index: 30; top: calc(100% + 6px); left: 0; right: 0; max-height: 300px; overflow-y: auto; margin: 0; padding: 5px;
  list-style: none; border: 1px solid var(--line); border-radius: var(--r-md); background: var(--glass-strong); box-shadow: var(--shadow-3);
  backdrop-filter: blur(20px) saturate(1.4); -webkit-backdrop-filter: blur(20px) saturate(1.4); transform-origin: top center;
}
html.motion-ok .airport-options:not([hidden]) { animation: pop-down 320ms var(--ease-out) both; }
@keyframes pop-down { from { opacity: 0; transform: translateY(-4px) scale(.98); } }
.airport-option {
  display: grid; grid-template-columns: 1fr auto; gap: 0 .6rem; padding: .55rem .7rem; border-radius: 10px; cursor: pointer;
  transition: background-color 140ms ease;
}
.airport-option[aria-selected="true"] { background: var(--accent-tint); }
@media (hover: hover) and (pointer: fine) { .airport-option:hover { background: var(--accent-tint); } }
.airport-place { font-size: var(--fs-sm); color: var(--ink-2); }
.airport-place strong { color: var(--ink); font-weight: 600; }
.airport-code { grid-row: span 2; align-self: center; padding: .2rem .5rem; border-radius: 8px; background: var(--surface-2); font-size: var(--fs-xs); font-weight: 700; letter-spacing: .08em; }
.airport-option small { color: var(--ink-3); font-size: var(--fs-xs); }
.airport-empty { padding: .7rem; color: var(--ink-3); font-size: var(--fs-sm); }
.add-slot {
  justify-self: start; min-height: 36px; padding: 0 .85rem; border: 1px dashed var(--line-strong); border-radius: var(--r-pill);
  background: none; color: var(--accent-ink); font-size: var(--fs-xs); font-weight: 650;
  transition: border-color var(--d-quick) ease, background-color var(--d-quick) ease, transform var(--d-press) var(--ease-out);
}
@media (hover: hover) and (pointer: fine) { .add-slot:not(:disabled):hover { border-color: var(--accent); background: var(--accent-tint); } }
.add-slot:active:not(:disabled) { transform: scale(.96); }
.add-slot:disabled { color: var(--ink-3); opacity: .6; }
.remove-slot {
  display: grid; place-items: center; flex: 0 0 44px; width: 44px; height: 50px; border: 1px solid var(--line-strong); border-radius: var(--r-sm);
  background: var(--surface); color: var(--ink-3); font-size: 1.2rem;
  transition: color var(--d-quick) ease, border-color var(--d-quick) ease;
}
@media (hover: hover) and (pointer: fine) { .remove-slot:hover { color: var(--danger); border-color: var(--danger); } }
.when-grid { align-items: start; }
.section-caption { margin-top: .2rem; font-size: var(--fs-sm); font-weight: 650; color: var(--ink-2); letter-spacing: 0; }

/* Travelers */
.stepper-list { display: grid; border: 1px solid var(--line); border-radius: var(--r-md); overflow: hidden; }
.stepper { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .75rem 1rem; }
.stepper + .stepper, .child-ages + .stepper { border-top: 1px solid var(--line); }
.stepper strong { display: block; font-size: var(--fs-sm); font-weight: 600; }
.stepper small { color: var(--ink-3); font-size: var(--fs-xs); }
.stepper-controls { display: flex; align-items: center; gap: .65rem; }
.stepper-controls output { min-width: 1.4ch; text-align: center; font-weight: 650; font-variant-numeric: tabular-nums; }
.stepper-button {
  display: grid; place-items: center; width: 34px; height: 34px; padding: 0; border: 1px solid var(--line-strong); border-radius: 50%;
  background: var(--surface); color: var(--ink); font-size: 1.1rem; line-height: 1;
  transition: border-color var(--d-quick) ease, background-color var(--d-quick) ease, transform var(--d-press) var(--ease-out);
}
@media (hover: hover) and (pointer: fine) { .stepper-button:not(:disabled):hover { border-color: var(--accent); background: var(--accent-tint); } }
.stepper-button:active:not(:disabled) { transform: scale(.9); }
.stepper-button:disabled { opacity: .35; }
.child-ages { display: flex; flex-wrap: wrap; gap: .5rem; padding: .2rem 1rem .9rem; }
.child-ages select { min-height: 38px; padding: 0 .7rem; border: 1px solid var(--line-strong); border-radius: 10px; background: var(--surface); }

.step-actions { display: flex; flex-wrap: wrap; align-items: center; gap: .8rem 1rem; margin-top: .4rem; }
.plan-step > .step-actions, .receipt-success > .step-actions { margin-top: 1.4rem; }
.controls-grid { margin-top: 1rem; }
.controls-grid .chip-row { gap: .45rem; }
.additional-textarea { min-height: 76px !important; }
.plan-page .notice, .plan-page .field-error { animation: none; }
.plan-page .notice { margin-top: 1rem; }

/* Summary chips at the top of later steps */
.assistant-trip-summary { display: flex; flex-wrap: wrap; gap: .45rem; margin: -.4rem 0 1.4rem; }
.assistant-trip-summary span, .constraint-chip {
  display: inline-flex; align-items: center; min-height: 30px; padding: 0 .75rem; border-radius: var(--r-pill);
  background: var(--surface-2); color: var(--ink-2); font-size: var(--fs-xs); font-weight: 600;
}
.constraint-chip { border: 0; }

/* ---------- Review ---------- */
.trip-brief {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin: 0 0 1.2rem 3.1rem; border: 1px solid var(--line); border-radius: var(--r-lg);
  background: var(--surface); overflow: hidden; box-shadow: var(--shadow-1);
}
.brief-row { display: grid; gap: .1rem; padding: .85rem 1.1rem; border-bottom: 1px solid var(--line); }
.brief-row:nth-child(odd) { border-right: 1px solid var(--line); }
.brief-row:nth-last-child(-n+2) { border-bottom: 0; }
.brief-row span { color: var(--ink-3); font-size: var(--fs-xs); }
.brief-row strong { font-size: var(--fs-sm); font-weight: 600; }
.plan-step > .field-hint { margin: 0 0 .2rem 3.1rem; }
.plan-step > .step-actions { margin-left: 3.1rem; }
.search-visual { margin: .6rem 0 .4rem 3.1rem; color: var(--accent); }
.search-visual svg { width: 100%; max-width: 560px; height: auto; overflow: visible; }
.search-visual circle { fill: var(--accent); }
.search-arc { fill: none; stroke: var(--accent); stroke-width: 1.8; stroke-linecap: round; stroke-dasharray: .35 .65; stroke-dashoffset: 0; opacity: .9; }
.search-arc-2 { opacity: .5; } .search-arc-3 { opacity: .3; }
html.motion-ok .search-arc { animation: arc-run 1.6s var(--ease-in-out) infinite; }
html.motion-ok .search-arc-2 { animation-delay: .25s; }
html.motion-ok .search-arc-3 { animation-delay: .5s; }
@keyframes arc-run { to { stroke-dashoffset: -1; } }
.search-visual + .thinking-trace { margin-top: 0; }

/* ---------- Flight results ---------- */
.demo-options { display: grid; gap: 1rem; margin: .4rem 0 1rem; }
.flight-card {
  position: relative; display: grid; gap: 1.1rem; padding: clamp(1.2rem, 2.4vw, 1.6rem); border: 1px solid var(--line); border-radius: var(--r-xl);
  background: var(--surface); box-shadow: var(--shadow-1);
  transition: border-color var(--d-ui) var(--ease-out), box-shadow var(--d-ui) var(--ease-out), transform var(--d-ui) var(--ease-out);
}
.flight-card.is-recommended { border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); box-shadow: 0 0 0 4px var(--accent-tint), var(--shadow-2); }
@media (hover: hover) and (pointer: fine) { .flight-card:hover { box-shadow: var(--shadow-2); border-color: var(--line-strong); } .flight-card.is-recommended:hover { box-shadow: 0 0 0 4px var(--accent-tint), var(--shadow-3); } }
.flight-top { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.flight-name { font-size: var(--fs-sm); font-weight: 600; color: var(--ink-2); letter-spacing: 0; }
.option-badges { display: flex; flex-wrap: wrap; gap: .35rem; }
.option-badges span { padding: .2rem .6rem; border-radius: var(--r-pill); background: var(--surface-2); color: var(--ink-2); font-size: var(--fs-xs); font-weight: 650; }
.option-badges .is-accent { background: var(--accent); color: #fff; }
.flight-route { display: grid; grid-template-columns: auto minmax(80px, 1fr) auto; align-items: center; gap: clamp(.8rem, 2vw, 1.6rem); }
.flight-end b { display: block; font-size: clamp(1.9rem, 4vw, 2.6rem); font-weight: 650; letter-spacing: -.02em; line-height: 1; font-variant-numeric: tabular-nums; }
.flight-end small { display: block; margin-top: .3rem; color: var(--ink-3); font-size: var(--fs-xs); }
.flight-end.is-end { text-align: right; }
.flight-arc { justify-self: center; width: 100%; max-width: 320px; }
.flight-arc svg { width: 100%; height: auto; overflow: visible; }
.flight-arc-line { fill: none; stroke: var(--line-strong); stroke-width: 1.4; stroke-dasharray: .012 .018; }
.flight-arc-done { fill: none; stroke: var(--accent); stroke-width: 1.8; stroke-linecap: round; stroke-dasharray: 1; stroke-dashoffset: 0; }
.flight-arc-plane { fill: var(--accent); }
html.motion-ok .flight-arc-done { stroke-dashoffset: 1; animation: draw-line 1.8s var(--ease-in-out) .5s forwards; }
html.motion-ok .flight-card:nth-child(2) .flight-arc-done { animation-delay: .65s; }
html.motion-ok .flight-card:nth-child(3) .flight-arc-done { animation-delay: .8s; }
.flight-foot { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; align-items: end; gap: 1rem 1.4rem; padding-top: 1rem; border-top: 1px dashed var(--line-strong); }
.segment-list { display: grid; gap: .15rem; margin: 0; padding: 0; list-style: none; color: var(--ink-3); font-size: var(--fs-xs); }
.flight-price { display: grid; justify-items: end; }
.option-price { font-size: clamp(1.4rem, 2.6vw, 1.8rem); font-weight: 650; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.flight-price small { color: var(--ink-3); font-size: var(--fs-xs); }
.option-select {
  display: inline-flex; align-items: center; justify-content: center; gap: .45rem; min-height: 46px; padding: 0 1.1rem; border: 1px solid var(--line-strong);
  border-radius: var(--r-pill); background: var(--surface); color: var(--ink); font-size: var(--fs-sm); font-weight: 650; white-space: nowrap;
  transition: border-color var(--d-quick) ease, background-color var(--d-quick) ease, transform var(--d-press) var(--ease-out);
}
.option-select svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.option-select.button { border: 0; }
@media (hover: hover) and (pointer: fine) { .option-select:not(.button):hover { border-color: var(--accent); background: var(--accent-tint); } }
.option-select:active { transform: scale(.97); }

/* ---------- Customize ---------- */
.refine-request { display: grid; gap: .45rem; margin-top: 1.4rem; }
.composer-field { display: flex; align-items: center; gap: .4rem; padding: .35rem .35rem .35rem 1rem; border: 1px solid var(--line-strong); border-radius: var(--r-pill); background: var(--surface); }
.composer-field:focus-within { border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-tint); }
.composer-field input { flex: 1; min-height: 40px; border: 0; outline: 0; background: none; }
.composer-send { display: grid; place-items: center; width: 40px; height: 40px; border: 0; border-radius: 50%; background: var(--accent); color: #fff; }
.composer-send svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; }
.suggestions { margin-top: 1rem; padding: 1rem; border-radius: var(--r-md); background: var(--surface-2); font-size: var(--fs-sm); }

/* ---------- Airport rides ---------- */
.transfer-step { display: grid; gap: 1rem; }
.transfer-intro { color: var(--ink-2); margin-left: 3.1rem; margin-top: -.6rem; }
.transfer-demo { color: var(--ink-3); font-size: var(--fs-xs); }
.transfer-step > .transfer-demo { margin: -.6rem 0 0 3.1rem; }
.transfer-flight { display: flex; justify-content: space-between; gap: 1rem; padding: .8rem 1.1rem; border-radius: var(--r-md); background: var(--surface-2); color: var(--ink-2); font-size: var(--fs-sm); font-weight: 600; }
.transfer-tabs { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 4px; padding: 4px; border-radius: 20px; background: var(--surface-2); isolation: isolate; }
.transfer-tabs::before {
  content: ""; position: absolute; z-index: -1; top: 4px; bottom: 4px; left: 4px; width: calc(50% - 6px); border-radius: 16px;
  background: var(--surface); box-shadow: var(--shadow-1); transition: transform 620ms var(--ease-out);
}
.transfer-tabs[data-state="arrival"]::before { transform: translateX(calc(100% + 4px)); }
.transfer-tab {
  display: grid; justify-items: start; gap: .15rem; padding: .85rem 1rem; border: 0; border-radius: 16px; background: none; color: var(--ink-3); text-align: left;
  transition: color var(--d-ui) var(--ease-out);
}
.transfer-tab strong { color: inherit; font-size: var(--fs-sm); }
.transfer-tab small { font-size: var(--fs-xs); }
.transfer-tab.is-active { color: var(--ink); }
.transfer-pill { margin-top: .25rem; padding: .1rem .55rem; border-radius: var(--r-pill); background: var(--bg); font-size: .7rem; font-weight: 650; transition: background-color var(--d-ui) var(--ease-out), color var(--d-ui) var(--ease-out); }
.transfer-pill.is-added { background: var(--success-soft); color: var(--success); }
.transfer-panel { display: grid; gap: 1rem; padding: clamp(1.1rem, 2.4vw, 1.5rem); border: 1px solid var(--line); border-radius: var(--r-xl); background: var(--surface); box-shadow: var(--shadow-1); }
.transfer-route { position: relative; display: grid; gap: .9rem; padding-left: 1.6rem; }
.transfer-route::before { content: ""; position: absolute; left: 5px; top: 14px; bottom: 14px; width: 2px; background: repeating-linear-gradient(180deg, var(--accent) 0 4px, transparent 4px 9px); }
.transfer-stop { position: relative; }
.transfer-stop::before { content: ""; position: absolute; left: calc(-1.6rem + 0px); top: 8px; width: 12px; height: 12px; border-radius: 50%; background: var(--surface); border: 2px solid var(--accent); }
.transfer-stop .field { gap: .35rem; }
.transfer-stop > .field > .field { margin-top: .5rem; }
.transfer-airport { display: grid; gap: .15rem; padding: .7rem .9rem; border-radius: var(--r-sm); background: var(--surface-2); }
.transfer-airport small { color: var(--ink-3); font-size: var(--fs-xs); }
.transfer-airport strong { font-size: var(--fs-sm); }
.transfer-timing { color: var(--ink-3); font-size: var(--fs-xs); }
.transfer-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; }
.transfer-heading h3 { font-size: var(--fs-md); }
.transfer-heading span { color: var(--ink-3); font-size: var(--fs-xs); }
.transfer-vehicles { display: grid; gap: .6rem; }
.ride-option {
  display: grid; grid-template-columns: 112px 1fr auto; align-items: center; gap: 1rem; padding: .8rem 1rem .8rem .8rem; border: 1px solid var(--line);
  border-radius: var(--r-lg); background: var(--surface); text-align: left;
  transition: border-color var(--d-ui) var(--ease-out), background-color var(--d-ui) var(--ease-out), box-shadow var(--d-ui) var(--ease-out), transform var(--d-press) var(--ease-out);
}
.ride-option.is-selected { border-color: var(--accent); background: color-mix(in srgb, var(--accent-soft) 70%, var(--surface)); box-shadow: 0 0 0 4px var(--accent-tint); }
@media (hover: hover) and (pointer: fine) { .ride-option:not(:disabled):not(.is-selected):hover { border-color: var(--line-strong); box-shadow: var(--shadow-1); } }
.ride-option:active:not(:disabled) { transform: scale(.985); }
.ride-option:disabled { opacity: .5; }
.ride-car { width: 112px; height: auto; overflow: visible; transition: transform 700ms var(--ease-out); }
.ride-option.is-selected .ride-car { transform: translateX(6px); }
.car-shadow { fill: var(--line); }
.car-body { fill: var(--surface-3); stroke: var(--ink-2); stroke-width: 1.4; stroke-linejoin: round; transition: fill var(--d-ui) var(--ease-out), stroke var(--d-ui) var(--ease-out); }
.car-window { fill: var(--surface); stroke: var(--ink-3); stroke-width: 1; }
.car-line { stroke: var(--ink-3); stroke-width: 1; opacity: .5; }
.car-wheel { fill: var(--ink); }
.car-hub { fill: var(--surface-2); }
.ride-option.is-selected .car-body { fill: var(--accent); stroke: var(--accent-ink); }
.ride-option.is-selected .car-window { fill: color-mix(in srgb, #fff 80%, var(--accent)); stroke: transparent; }
.ride-description { display: grid; gap: .1rem; }
.ride-description strong { font-size: var(--fs-sm); }
.ride-description span { color: var(--ink-2); font-size: var(--fs-xs); }
.ride-description small { color: var(--ink-3); font-size: var(--fs-xs); }
.ride-price { display: flex; align-items: center; gap: .7rem; }
.ride-price strong { font-variant-numeric: tabular-nums; }
.ride-check {
  position: relative; display: grid; place-items: center; width: 26px; height: 26px; border: 1.5px solid var(--line-strong); border-radius: 50%;
  transition: background-color var(--d-ui) var(--ease-out), border-color var(--d-ui) var(--ease-out);
}
.ride-check::after { content: ""; width: 10px; height: 5px; border: solid #fff; border-width: 0 0 2px 2px; transform: translateY(-1px) rotate(-45deg) scale(.3); opacity: 0; transition: transform var(--d-ui) var(--ease-out), opacity var(--d-quick) ease; }
.ride-option.is-selected .ride-check { background: var(--accent); border-color: var(--accent); }
.ride-option.is-selected .ride-check::after { opacity: 1; transform: translateY(-1px) rotate(-45deg) scale(1); }
.ride-remove { justify-self: start; }
.transfer-footer {
  position: sticky; bottom: 1rem; z-index: 5; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .9rem .9rem .9rem 1.3rem;
  border: 1px solid var(--line); border-radius: var(--r-xl); background: var(--glass-strong); box-shadow: var(--shadow-3);
  backdrop-filter: blur(20px) saturate(1.4); -webkit-backdrop-filter: blur(20px) saturate(1.4);
}
.transfer-footer > div:first-child { display: grid; }
.transfer-footer > div:first-child span { color: var(--ink-3); font-size: var(--fs-xs); }
.transfer-footer > div:first-child strong { font-size: 1.3rem; font-variant-numeric: tabular-nums; }
.transfer-footer > div:first-child small { color: var(--ink-3); font-size: var(--fs-xs); }
.transfer-footer .step-actions { margin: 0; }

/* ---------- Checkout ---------- */
.checkout-layout { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(300px, 1fr); gap: clamp(1rem, 2.6vw, 2rem); align-items: start; }
.checkout-main { display: grid; gap: 1.1rem; }
.checkout-aside { position: sticky; top: 1rem; display: grid; gap: 1rem; }
.checkout-section-title { margin-top: .8rem; font-size: var(--fs-md); letter-spacing: -.01em; }
.simulation-banner { padding: .8rem 1rem; border-radius: var(--r-md); background: var(--warn-soft); color: var(--warn); font-size: var(--fs-xs); font-weight: 600; }
.checkout-card { display: grid; gap: .8rem; padding: 1.3rem; border: 1px solid var(--line); border-radius: var(--r-xl); background: var(--surface); box-shadow: var(--shadow-2); }
.checkout-card-title { font-size: var(--fs-sm); color: var(--ink-3); font-weight: 600; letter-spacing: 0; }
.checkout-summary { display: grid; }
.checkout-summary > div { display: flex; justify-content: space-between; gap: 1rem; padding: .45rem 0; font-size: var(--fs-sm); }
.checkout-summary > div span:last-child { font-variant-numeric: tabular-nums; font-weight: 600; text-align: right; }
.checkout-summary .muted { color: var(--ink-3); font-size: var(--fs-xs); }
.checkout-summary .muted span:last-child { font-weight: 500; }
.checkout-summary .ride-summary-route { padding-top: 0; color: var(--ink-3); font-size: var(--fs-xs); }
.checkout-summary .total { margin-top: .4rem; padding-top: .9rem; border-top: 1px dashed var(--line-strong); font-size: 1.15rem; font-weight: 650; }
.insurance-included { display: flex; gap: .9rem; align-items: flex-start; padding: 1rem 1.1rem; border-radius: var(--r-lg); background: var(--success-soft); color: var(--ink-2); }
.insurance-icon { display: grid; place-items: center; flex: 0 0 32px; width: 32px; height: 32px; border-radius: 50%; background: var(--success); color: #fff; font-size: .9rem; }
.insurance-included strong { display: block; color: var(--ink); font-size: var(--fs-sm); }
.insurance-included-label { display: block; margin-top: .1rem; color: var(--success); font-size: var(--fs-xs); font-weight: 650; }
.insurance-included p { margin-top: .35rem; font-size: var(--fs-xs); line-height: 1.5; }
.promo-row { display: flex; gap: .5rem; }
.promo-row .code-input { flex: 1; text-transform: uppercase; letter-spacing: .06em; }
.payment-methods { margin: 0; padding: 0; border: 0; min-width: 0; }
.payment-method-hint { margin-bottom: .7rem; color: var(--ink-3); font-size: var(--fs-xs); }
.payment-options { display: grid; grid-template-columns: 1fr 1fr; gap: .6rem; }
.payment-option {
  position: relative; display: grid; gap: .6rem; padding: 1rem; border: 1px solid var(--line-strong); border-radius: var(--r-lg); background: var(--surface); cursor: pointer;
  transition: border-color var(--d-ui) var(--ease-out), box-shadow var(--d-ui) var(--ease-out), background-color var(--d-ui) var(--ease-out);
}
.payment-option input { position: absolute; opacity: 0; pointer-events: none; }
.payment-option.is-selected { border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-tint); }
.payment-option:has(input:focus-visible) { outline: 2px solid var(--accent); outline-offset: 2px; }
.payment-brand { display: flex; gap: .35rem; }
.payment-mark { width: 44px; height: 28px; border-radius: 6px; background: #fff; box-shadow: 0 0 0 1px var(--line); object-fit: contain; }
.payment-description strong { display: block; font-size: var(--fs-sm); }
.payment-description small { color: var(--ink-3); font-size: var(--fs-xs); }
.payment-details { margin-top: .8rem; }
.test-cards { display: flex; flex-wrap: wrap; gap: .4rem .8rem; margin: .4rem 0 0; padding: 0; list-style: none; color: var(--ink-3); font-size: var(--fs-xs); }
.test-cards button { padding: .2rem .55rem; border: 1px dashed var(--line-strong); border-radius: 8px; background: none; color: var(--accent-ink); font-size: var(--fs-xs); font-weight: 650; font-variant-numeric: tabular-nums; }
.wallet-preview { display: grid; justify-items: start; gap: .4rem; padding: 1rem; border-radius: var(--r-md); background: var(--surface-2); }
.wallet-preview p { color: var(--ink-3); font-size: var(--fs-xs); }
.checkout-main .step-actions .button { width: 100%; min-height: 56px; font-size: 1.02rem; }
.apple-pay-button { --button-bg: #000; }
.apple-pay-button .payment-mark { width: 40px; height: 24px; box-shadow: none; }
.button.is-busy::before {
  content: ""; width: 18px; height: 18px; border-radius: 50%; border: 2px solid rgba(255, 255, 255, .35); border-top-color: #fff;
  animation: spin 800ms linear infinite;
}

/* ---------- Receipt ---------- */
.receipt-success { display: grid; gap: 1.6rem; }
.success-heading { display: grid; justify-items: center; gap: .55rem; text-align: center; padding-top: .6rem; }
.success-emblem { width: 72px; height: 72px; color: var(--success); }
.success-emblem svg { width: 100%; height: 100%; overflow: visible; }
.success-emblem circle { fill: var(--success-soft); stroke: currentColor; stroke-width: 2; stroke-dasharray: 1; stroke-dashoffset: 0; }
.success-emblem path { fill: none; stroke: currentColor; stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; stroke-dasharray: 1; stroke-dashoffset: 0; }
html.motion-ok .success-emblem circle { stroke-dashoffset: 1; animation: draw-line 900ms var(--ease-out) .2s forwards; }
html.motion-ok .success-emblem path { stroke-dashoffset: 1; animation: draw-line 600ms var(--ease-out) .9s forwards; }
html.motion-ok .success-emblem svg { animation: emblem-pop 900ms var(--ease-out) .9s; }
@keyframes emblem-pop { 30% { transform: scale(1.08); } }
.success-kicker { color: var(--success); font-size: var(--fs-sm); font-weight: 650; }
.success-heading h3 { font-size: var(--fs-2xl); letter-spacing: -.035em; outline: none; }
.success-message { max-width: 52ch; color: var(--ink-3); font-size: var(--fs-sm); }
.pass-slot { position: relative; padding-top: 10px; }
.pass-slot::before {
  content: ""; position: absolute; z-index: 2; top: 2px; left: 6%; right: 6%; height: 6px; border-radius: 6px;
  background: linear-gradient(90deg, transparent, var(--line-strong) 12%, var(--line-strong) 88%, transparent);
  box-shadow: 0 2px 10px -2px rgba(10, 27, 51, .2);
}
html.motion-ok .pass-slot .pass { animation: print-out 1500ms var(--ease-out) .5s both; }
@keyframes print-out { from { clip-path: inset(0 0 100% 0); transform: translateY(-40px); } to { clip-path: inset(0 0 0 0); transform: none; } }
.receipt-breakdown { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.detail-grid { display: grid; gap: 0; margin: 0; padding: 1.1rem 1.3rem; border: 1px solid var(--line); border-radius: var(--r-xl); background: var(--surface); }
.detail-grid > div { display: flex; justify-content: space-between; gap: 1rem; padding: .5rem 0; border-bottom: 1px solid var(--line); font-size: var(--fs-sm); }
.detail-grid > div:last-child { border-bottom: 0; }
.detail-grid dt { color: var(--ink-3); }
.detail-grid dd { margin: 0; font-weight: 600; text-align: right; font-variant-numeric: tabular-nums; }
.receipt-flight-details { padding: 1.1rem 1.3rem; border: 1px solid var(--line); border-radius: var(--r-xl); background: var(--surface-2); font-size: var(--fs-sm); }
.receipt-flight-details h4 { margin: 0 0 .3rem; font-size: var(--fs-sm); letter-spacing: 0; }
.receipt-flight-details h4:not(:first-child) { margin-top: 1rem; }
.receipt-flight-details p, .receipt-flight-details li { color: var(--ink-2); font-size: var(--fs-xs); }
.receipt-flight-details ul { margin: 0; padding-left: 1.1rem; }
.receipt-success > .step-actions { justify-content: center; }
.confetti-canvas { position: fixed; inset: 0; z-index: 500; width: 100vw; height: 100vh; pointer-events: none; }

/* Old status line from the previous layout (kept for API flows). */
.sample-disclaimer, .results-bar { color: var(--ink-3); font-size: var(--fs-xs); }
.selected-details { margin-top: 1rem; padding: 1.2rem; border: 1px solid var(--line); border-radius: var(--r-lg); background: var(--surface); }

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .planner-layout { grid-template-columns: minmax(0, 1fr); }
  .journey-rail { display: none; }
}
@media (max-width: 860px) {
  .checkout-layout { grid-template-columns: 1fr; }
  .checkout-aside { position: static; order: -1; }
  .receipt-breakdown { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .planner-bar { height: 60px; gap: .7rem; }
  .planner-heading { padding-left: .7rem; }
  .planner-heading strong { display: none; }
  .planner-bar .theme-toggle { display: none; }
  .intent-composer, .interpretation-card, .thinking-trace, .trip-brief, .search-visual, .plan-step > .field-hint, .plan-step > .step-actions, .transfer-intro, .transfer-step > .transfer-demo { margin-left: 0; }
  .chat-avatar { flex-basis: 30px; width: 30px; height: 30px; border-radius: 10px; }
  .field-grid, .trip-brief, .payment-options { grid-template-columns: 1fr; }
  .brief-row:nth-child(odd) { border-right: 0; }
  .brief-row:nth-last-child(2) { border-bottom: 1px solid var(--line); }
  .composer-hint { display: none; }
  .flight-foot { grid-template-columns: 1fr auto; }
  .flight-foot .option-select { grid-column: 1 / -1; }
  .ride-option { grid-template-columns: 76px 1fr; }
  .ride-car { width: 76px; }
  .ride-price { grid-column: 2; }
  .transfer-footer { bottom: .6rem; flex-wrap: wrap; gap: .5rem .8rem; padding: .7rem .7rem .7rem 1rem; }
  .transfer-footer > div:first-child small { display: none; }
  .transfer-footer > div:first-child strong { font-size: 1.1rem; }
  .transfer-footer .step-actions { gap: .3rem; }
  .transfer-footer .button { min-height: 44px; padding: 0 1rem; font-size: .88rem; }
  .transfer-footer .link-button { font-size: .8rem; }
  .planner-content { padding-bottom: 5rem; }
}
@media (hover: none) { .composer-hint { display: none; } }