:root {
  --ink: #0e1116;
  --ink-soft: #1b2028;
  --accent: #c8f542;
  --accent-dark: #b1d935;
  --bg: #f5f6f8;
  --surface: #ffffff;
  --border: #e5e8ee;
  --text: #16181d;
  --muted: #6b7280;
  --danger: #e5484d;
  --success: #2fb344;
  --warn: #f5a623;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(15, 18, 24, 0.08);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.app-header {
  display: flex;
  align-items: center;
  gap: 32px;
  background: var(--ink);
  color: #fff;
  padding: 14px 28px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.brand-dot {
  color: var(--accent);
}

.main-nav {
  display: flex;
  gap: 4px;
  flex: 1;
}

.nav-btn {
  border: none;
  background: none;
  color: #9aa3b2;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.nav-btn:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.nav-btn.active {
  color: var(--ink);
  background: var(--accent);
}

.lang-toggle {
  display: flex;
  border: 1px solid #2a303b;
  border-radius: 8px;
  overflow: hidden;
}

.lang-btn {
  border: none;
  background: none;
  color: #9aa3b2;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 6px 12px;
  cursor: pointer;
}

.lang-btn:hover {
  color: #fff;
}

.lang-btn.active {
  background: var(--accent);
  color: var(--ink);
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 24px 60px;
}

.view {
  display: none;
}

.view.active {
  display: block;
}

.view-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.view-title {
  font-size: 1.5rem;
  font-weight: 800;
}

.btn {
  border: none;
  border-radius: 10px;
  padding: 10px 18px;
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  transition: filter 0.15s, background 0.15s;
}

.btn:hover {
  filter: brightness(1.06);
}

.btn-accent {
  background: var(--accent);
  color: var(--ink);
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
}

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

.stat-value {
  font-size: 1.6rem;
  font-weight: 800;
}

.dash-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}

.card-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.dash-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.dash-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.dash-item .name {
  font-weight: 600;
  font-size: 0.92rem;
}

.dash-item .sub {
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 2px;
}

.dash-item .amount {
  font-weight: 700;
  white-space: nowrap;
}

.trip-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.trip-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}

.trip-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-dark);
}

.trip-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.trip-card-name {
  font-size: 1.05rem;
  font-weight: 800;
}

.trip-card-meta {
  font-size: 0.8rem;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.trip-card-cost {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--border);
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--muted);
}

.trip-card-cost b {
  color: var(--text);
}

.status-badge {
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  border-radius: 999px;
  white-space: nowrap;
}

.status-planned {
  background: #eef1f6;
  color: var(--muted);
}

.status-inprogress {
  background: #fff6e0;
  color: var(--warn);
}

.status-completed {
  background: #e5f6e9;
  color: var(--success);
}

.empty-box {
  text-align: center;
  color: var(--muted);
  padding: 40px 20px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.detail-head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.detail-title-group {
  flex: 1;
  min-width: 220px;
}

#trip-detail-name {
  font-size: 1.6rem;
  font-weight: 800;
  outline: none;
  border-bottom: 1px dashed transparent;
}

#trip-detail-name:focus {
  border-bottom-color: var(--accent-dark);
}

.detail-dates {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.9rem;
}

.detail-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.segment-form {
  display: grid;
  grid-template-columns: 110px 1fr 110px 110px 130px 90px 110px 110px auto;
  gap: 8px;
  margin-bottom: 14px;
}

.segment-total {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 12px;
}

.segment-total b {
  color: var(--text);
}

.segment-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.segment-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
}

.seg-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: #eef1f6;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  flex-shrink: 0;
}

.seg-icon.type-flight { background: #e8effd; }
.seg-icon.type-train { background: #f0e8fd; }
.seg-icon.type-hotel { background: #e5f6e9; }
.seg-icon.type-car { background: #fff6e0; }

.seg-main {
  flex: 1;
  min-width: 0;
}

.seg-title {
  font-weight: 700;
}

.seg-sub {
  font-size: 0.8rem;
  color: var(--muted);
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
}

.seg-ref {
  font-size: 0.72rem;
  font-family: ui-monospace, monospace;
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 1px 6px;
  border-radius: 4px;
}

.seg-cost {
  font-weight: 700;
  white-space: nowrap;
}

.seg-actions {
  display: flex;
  gap: 4px;
  align-items: center;
}

.icon-btn {
  border: none;
  background: none;
  cursor: pointer;
  font-size: 1rem;
  padding: 4px 6px;
  border-radius: 6px;
  color: var(--muted);
  line-height: 1;
}

.icon-btn:hover {
  background: #f0f3fb;
  color: var(--danger);
}

input, select, button {
  font: inherit;
  color: var(--text);
}

input, select {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 9px 12px;
  background: #fff;
  outline: none;
}

input:focus, select:focus {
  border-color: var(--accent-dark);
}

.expense-form {
  display: grid;
  grid-template-columns: 1fr 120px 150px 140px 1fr auto auto;
  gap: 8px;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 16px;
}

.file-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 0.85rem;
  cursor: pointer;
  background: #fff;
  white-space: nowrap;
  color: var(--muted);
  font-weight: 600;
}

.file-btn input {
  display: none;
}

.spend-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.spend-stats {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.pill {
  font-size: 0.82rem;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
}

.pill.approved { border-color: #bde5c4; color: var(--success); }
.pill.pending { border-color: #f4d9a0; color: var(--warn); }
.pill.total { border-color: var(--border); }

.expense-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.expense-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
}

.exp-rcpt {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  object-fit: cover;
  border: 1px solid var(--border);
  background: var(--bg);
  flex-shrink: 0;
}

.exp-main {
  flex: 1;
  min-width: 0;
}

.exp-title {
  font-weight: 700;
}

.exp-sub {
  font-size: 0.8rem;
  color: var(--muted);
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.exp-amount {
  font-weight: 800;
  white-space: nowrap;
}

.exp-badge {
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 3px 8px;
  border-radius: 999px;
}

.exp-badge.pending { background: #fff6e0; color: var(--warn); }
.exp-badge.approved { background: #e5f6e9; color: var(--success); }
.exp-badge.rejected { background: #fde8e8; color: var(--danger); }

.exp-actions {
  display: flex;
  gap: 6px;
  align-items: center;
}

.act-btn {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  color: var(--muted);
}

.act-btn:hover {
  color: var(--text);
  border-color: var(--accent-dark);
}

.act-btn.approve:hover {
  color: var(--success);
  border-color: var(--success);
}

.act-btn.reject:hover {
  color: var(--danger);
  border-color: var(--danger);
}

.flights-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
}

.flights-hint {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 4px;
}

.sky-badge {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  background: var(--ink);
  color: var(--accent);
  padding: 5px 12px;
  border-radius: 999px;
  white-space: nowrap;
}

.flights-widget {
  display: grid;
  grid-template-columns: 1fr 1fr 150px 150px auto;
  gap: 8px;
  margin-bottom: 12px;
}

.hotels-widget {
  display: grid;
  grid-template-columns: 1fr 160px 160px 150px auto;
  gap: 10px;
  margin-bottom: 12px;
  align-items: end;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.field label {
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.stepper {
  display: flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
}

.stepper button {
  border: none;
  background: #fff;
  width: 38px;
  height: 40px;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  color: var(--text);
  line-height: 1;
}

.stepper button:hover {
  background: #eef1f6;
}

.stepper input {
  border: none;
  background: transparent;
  text-align: center;
  width: 52px;
  font-weight: 700;
  padding: 0;
  -moz-appearance: textfield;
}

.hotels-widget > *,
.flights-widget > * {
  min-width: 0;
}

.explore-widget {
  display: grid;
  grid-template-columns: 1fr 1fr 150px 150px auto;
  gap: 8px;
  margin-bottom: 12px;
  align-items: end;
}

.explore-widget > * {
  min-width: 0;
}

.explore-grid {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.explore-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.ex-pagination {
  display: flex;
  align-items: center;
  gap: 12px;
}

.ex-pagination[hidden] {
  display: none;
}

#ex-page-info {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--muted);
  white-space: nowrap;
}

.explore-card.explore-cheapest {
  border: 2px solid var(--success);
}

.cheapest-badge {
  color: var(--success);
  font-weight: 700;
  font-size: 0.78rem;
  margin-left: 8px;
  white-space: nowrap;
}

.explore-keep {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  margin-top: 2px;
}

.explore-keep input {
  width: 15px;
  height: 15px;
  accent-color: var(--accent-dark);
  cursor: pointer;
}

.ex-progress-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.ex-progress-wrap[hidden] {
  display: none;
}

.ex-progress {
  flex: 1;
  height: 8px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
}

#ex-progress-fill {
  height: 100%;
  width: 0;
  background: var(--accent);
  border-radius: 999px;
  transition: width 0.2s;
}

.ex-progress-wrap.explore-loading #ex-progress-fill {
  background-image: linear-gradient(
    45deg,
    rgba(255, 255, 255, 0.28) 25%,
    transparent 25%,
    transparent 50%,
    rgba(255, 255, 255, 0.28) 50%,
    rgba(255, 255, 255, 0.28) 75%,
    transparent 75%,
    transparent
  );
  background-size: 24px 24px;
  animation: explore-stripes 0.8s linear infinite;
}

@keyframes explore-stripes {
  from { background-position: 0 0; }
  to { background-position: 24px 0; }
}

#ex-progress-label {
  font-size: 0.85rem;
  font-weight: 700;
  min-width: 72px;
  text-align: right;
  color: var(--muted);
}

.htl-photo {
  width: 72px;
  height: 72px;
  border-radius: 10px;
  object-fit: cover;
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.htl-toolbar {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.htl-sort-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

.htl-sort-wrap label {
  font-size: 0.85rem;
  font-weight: 700;
  white-space: nowrap;
}

.htl-price-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  min-width: 240px;
}

.htl-price-row label {
  font-size: 0.85rem;
  font-weight: 700;
  white-space: nowrap;
}

.htl-price-row input[type="range"] {
  flex: 1;
  min-width: 120px;
  accent-color: var(--accent-dark);
  padding: 0;
}

#htl-price-val {
  font-size: 0.85rem;
  font-weight: 700;
  min-width: 52px;
  text-align: right;
}

.htl-map {
  height: 420px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
  background: #e8eae8;
  z-index: 0;
}

.htl-book {
  text-decoration: none;
  text-align: center;
}

.flt-actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.htl-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-top: 16px;
}

#htl-page-info {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--muted);
}

#htl-prev:disabled {
  opacity: 0.4;
  cursor: default;
}

.flt-trip-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.flt-trip-row label {
  font-size: 0.9rem;
  font-weight: 700;
  white-space: nowrap;
}

#flt-trip {
  min-width: 220px;
  max-width: 340px;
}

.flt-filters {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.flt-toolbar {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.flt-sort-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

.flt-sort-wrap label {
  font-size: 0.85rem;
  font-weight: 700;
  white-space: nowrap;
}

.flt-price-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  min-width: 240px;
}

.flt-price-row label {
  font-size: 0.85rem;
  font-weight: 700;
  white-space: nowrap;
}

.flt-price-row input[type="range"] {
  flex: 1;
  min-width: 120px;
  accent-color: var(--accent-dark);
  padding: 0;
}

#flt-price-val {
  font-size: 0.85rem;
  font-weight: 700;
  min-width: 52px;
  text-align: right;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(14, 17, 22, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}

.modal[hidden] {
  display: none;
}

.modal-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
}

.modal-card h3 {
  margin-bottom: 16px;
}

.modal-card form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 6px;
}

.flt-direct {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}

.flt-direct input {
  width: 17px;
  height: 17px;
  accent-color: var(--accent-dark);
  cursor: pointer;
}

.flt-hint {
  font-size: 0.8rem;
  color: var(--muted);
}

.flt-key-row {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
  max-width: 520px;
}

.flt-key-row input {
  flex: 1;
}

.flt-status {
  font-size: 0.9rem;
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 12px;
}

.flt-status.info {
  background: #eef1f6;
  color: var(--muted);
}

.flt-status.success {
  background: #e5f6e9;
  color: var(--success);
}

.flt-status.error {
  background: #fde8e8;
  color: var(--danger);
}

.flt-results {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.flt-summary {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--muted);
}

.flt-card {
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
}

.flt-card-left {
  min-width: 150px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.flt-price {
  font-size: 1.35rem;
  font-weight: 800;
}

.flt-meta {
  font-size: 0.8rem;
  color: var(--muted);
}

.htl-free-cancel {
  color: var(--success, #0a7d32);
  font-weight: 700;
  font-size: 0.85rem;
  white-space: nowrap;
}

.flt-legs {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.flt-leg {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.flt-time {
  font-size: 0.9rem;
  white-space: nowrap;
}

.flt-arrow {
  color: var(--muted);
}

.flt-legmeta {
  font-size: 0.78rem;
  color: var(--muted);
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.flt-seg {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 2px 8px;
  font-family: ui-monospace, monospace;
  font-size: 0.72rem;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.8rem;
}

@media (max-width: 860px) {
  .app-header {
    flex-wrap: wrap;
    gap: 12px;
  }
  .main-nav {
    order: 3;
    width: 100%;
  }
  .stat-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .dash-grid {
    grid-template-columns: 1fr;
  }
  .segment-form,
  .expense-form,
  .flights-widget,
  .hotels-widget,
  .explore-widget {
    grid-template-columns: 1fr;
  }
  .flt-card {
    flex-direction: column;
    align-items: flex-start;
  }
}

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translate(-50%, 16px);
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--success);
  border-left: 4px solid var(--success);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.18);
  border-radius: var(--radius);
  padding: 12px 18px;
  font-size: 0.9rem;
  font-weight: 700;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s, transform 0.25s, visibility 0.25s;
  z-index: 1000;
  max-width: min(92vw, 520px);
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}