/* ============================================================
   TripOps — Travel Itinerary Management
   A refined, information-rich stylesheet for travel operations.
   ============================================================ */

/* --- Design Tokens --- */
:root {
  /* Colors */
  --color-primary: #1E293B;
  --color-primary-light: #334155;
  --color-primary-lighter: #475569;
  --color-accent: #3B82F6;
  --color-accent-hover: #2563EB;
  --color-accent-light: rgba(59, 130, 246, 0.1);
  --color-surface: #FFFFFF;
  --color-bg: #F8FAFC;
  --color-success: #10B981;
  --color-success-light: rgba(16, 185, 129, 0.1);
  --color-warning: #F59E0B;
  --color-warning-light: rgba(245, 158, 11, 0.1);
  --color-danger: #EF4444;
  --color-danger-light: rgba(239, 68, 68, 0.1);
  --color-text: #0F172A;
  --color-text-secondary: #64748B;
  --color-text-muted: #94A3B8;
  --color-border: #E2E8F0;
  --color-border-light: #F1F5F9;

  /* Item-type colors */
  --color-flight: #3B82F6;
  --color-hotel: #8B5CF6;
  --color-car-rental: #F59E0B;
  --color-train: #10B981;
  --color-restaurant: #EF4444;
  --color-meeting: #6366F1;
  --color-activity: #EC4899;
  --color-transfer: #14B8A6;
  --color-other: #64748B;

  /* Radii */
  --radius: 12px;
  --radius-sm: 8px;
  --radius-xs: 4px;

  /* Shadows */
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', 'Cascadia Code', monospace;

  /* Spacing */
  --sidebar-width: 260px;
  --content-max: 1200px;
  --mobile-nav-height: 60px;
}


/* ============================================================
   Reset & Base
   ============================================================ */

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  text-wrap: pretty;
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  text-wrap: balance;
  line-height: 1.3;
  color: var(--color-text);
}

h1 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 18px;
  font-weight: 600;
}

small, .text-sm {
  font-size: 13px;
}

.mono, .stat-value, .confirmation {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  color: var(--color-accent-hover);
}

img, svg {
  display: block;
  max-width: 100%;
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}


/* ============================================================
   Layout — Sidebar + Content (Desktop)
   ============================================================ */

.app-layout {
  display: flex;
  min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background-color: var(--color-primary);
  color: #CBD5E1;
  display: none;                /* hidden on mobile, shown at 768px+ */
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.sidebar-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 24px 20px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-logo {
  width: 34px;
  height: 34px;
  background-color: var(--color-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-size: 18px;
  flex-shrink: 0;
}

.sidebar-brand {
  font-size: 19px;
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: -0.02em;
}

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

/* Navigation */
.sidebar-nav {
  flex: 1;
  padding: 12px 10px;
}

.nav-section-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #64748B;
  padding: 16px 12px 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: #CBD5E1;
  font-size: 14px;
  font-weight: 500;
  transition: background-color 0.15s ease, color 0.15s ease;
  user-select: none;
}

.nav-item:hover {
  background-color: rgba(255, 255, 255, 0.07);
  color: #FFFFFF;
}

.nav-item.active {
  background-color: var(--color-accent);
  color: #FFFFFF;
}

.nav-item .nav-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  opacity: 0.7;
}

.nav-item.active .nav-icon {
  opacity: 1;
}

.nav-item .nav-badge {
  margin-left: auto;
  background-color: rgba(255, 255, 255, 0.15);
  color: #FFFFFF;
  font-size: 11px;
  font-weight: 600;
  padding: 1px 7px;
  border-radius: 10px;
  min-width: 20px;
  text-align: center;
}

.nav-item.active .nav-badge {
  background-color: rgba(255, 255, 255, 0.25);
}

/* Sidebar footer / user info */
.sidebar-footer {
  padding: 16px 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: background-color 0.15s ease;
}

.sidebar-user:hover {
  background-color: rgba(255, 255, 255, 0.07);
}

.sidebar-user .user-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background-color: var(--color-primary-lighter);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  color: #FFFFFF;
  flex-shrink: 0;
}

.sidebar-user .user-info {
  overflow: hidden;
}

.sidebar-user .user-name {
  font-size: 14px;
  font-weight: 600;
  color: #FFFFFF;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-user .user-email {
  font-size: 12px;
  color: #64748B;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* --- Main Content --- */
.main-content {
  flex: 1;
  min-height: 100vh;
  padding: 16px;
  padding-bottom: calc(var(--mobile-nav-height) + 24px);  /* room for bottom nav on mobile */
}

.content-wrapper {
  max-width: var(--content-max);
  margin: 0 auto;
}

/* Page header */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}

.page-header h1 {
  flex: 1;
  min-width: 200px;
}

.page-header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.breadcrumb a {
  color: var(--color-text-secondary);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.breadcrumb .separator {
  color: var(--color-border);
}


/* ============================================================
   Bottom Navigation — Mobile
   ============================================================ */

.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--mobile-nav-height);
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-around;
  z-index: 100;
  padding-bottom: env(safe-area-inset-bottom, 0);
}

.bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 6px 12px;
  color: var(--color-text-muted);
  font-size: 11px;
  font-weight: 500;
  transition: color 0.15s ease;
  -webkit-tap-highlight-color: transparent;
}

.bottom-nav-item .nav-icon {
  width: 22px;
  height: 22px;
}

.bottom-nav-item.active {
  color: var(--color-accent);
}


/* ============================================================
   Auth Screens
   ============================================================ */

.auth-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px 16px;
  background-color: var(--color-bg);
}

.auth-branding {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 32px;
}

.auth-branding .sidebar-logo {
  width: 40px;
  height: 40px;
  font-size: 20px;
}

.auth-branding .sidebar-brand {
  font-size: 24px;
  color: var(--color-text);
}

.auth-card {
  width: 100%;
  max-width: 400px;
  background-color: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 32px 28px;
}

.auth-card h2 {
  margin-bottom: 4px;
}

.auth-card .auth-subtitle {
  color: var(--color-text-secondary);
  font-size: 14px;
  margin-bottom: 24px;
}

.auth-card .form-group {
  margin-bottom: 18px;
}

.auth-card .btn-primary {
  width: 100%;
  margin-top: 4px;
}

.auth-footer {
  margin-top: 20px;
  font-size: 14px;
  color: var(--color-text-secondary);
  text-align: center;
}

.auth-footer a {
  font-weight: 600;
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 20px 0;
  font-size: 13px;
  color: var(--color-text-muted);
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background-color: var(--color-border);
}


/* ============================================================
   Stats Cards
   ============================================================ */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 28px;
}

.stat-card {
  background-color: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  position: relative;
  overflow: hidden;
}

.stat-card .stat-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  margin-bottom: 8px;
}

.stat-card .stat-icon.blue   { background-color: var(--color-accent-light); color: var(--color-accent); }
.stat-card .stat-icon.green  { background-color: var(--color-success-light); color: var(--color-success); }
.stat-card .stat-icon.amber  { background-color: var(--color-warning-light); color: var(--color-warning); }
.stat-card .stat-icon.red    { background-color: var(--color-danger-light); color: var(--color-danger); }

.stat-value {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.stat-change {
  font-size: 12px;
  font-weight: 600;
  margin-top: 4px;
}

.stat-change.up   { color: var(--color-success); }
.stat-change.down { color: var(--color-danger); }


/* ============================================================
   Trip Cards
   ============================================================ */

.trips-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.trip-card {
  background-color: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 20px;
  border-left: 4px solid var(--color-border);
  cursor: pointer;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
}

.trip-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

/* Status-based left border */
.trip-card.status-upcoming  { border-left-color: var(--color-accent); }
.trip-card.status-active    { border-left-color: var(--color-success); }
.trip-card.status-completed { border-left-color: var(--color-text-muted); }
.trip-card.status-cancelled { border-left-color: var(--color-danger); }

.trip-card .trip-destination {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
}

.trip-card .trip-dates {
  font-size: 13px;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.trip-card .trip-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.trip-card .trip-traveler {
  display: flex;
  align-items: center;
  gap: 6px;
}

.trip-card .trip-item-count {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background-color: var(--color-bg);
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.trip-card .trip-actions {
  position: absolute;
  top: 14px;
  right: 14px;
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: opacity 0.15s ease;
}

.trip-card:hover .trip-actions {
  opacity: 1;
}


/* ============================================================
   Timeline
   ============================================================ */

.timeline {
  position: relative;
  padding-left: 28px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background-color: var(--color-border);
  border-radius: 1px;
}

.timeline-day {
  margin-bottom: 24px;
}

.timeline-day-header {
  position: relative;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-secondary);
  padding: 4px 0 12px;
}

.timeline-day-header::before {
  content: '';
  position: absolute;
  left: -24px;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--color-accent);
  border: 2px solid var(--color-bg);
  box-shadow: 0 0 0 2px var(--color-border);
}

.timeline-item {
  position: relative;
  margin-bottom: 12px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -22px;
  top: 18px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-border);
}

.timeline-time {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  margin-bottom: 4px;
}


/* ============================================================
   Item Type Cards
   ============================================================ */

.item-card {
  background-color: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px 18px;
  border-left: 4px solid var(--color-border);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.item-card:hover {
  box-shadow: var(--shadow-md);
}

/* Item-type left border colors */
.item-card.flight      { border-left-color: var(--color-flight); }
.item-card.hotel       { border-left-color: var(--color-hotel); }
.item-card.car_rental,
.item-card.car-rental  { border-left-color: var(--color-car-rental); }
.item-card.train       { border-left-color: var(--color-train); }
.item-card.restaurant  { border-left-color: var(--color-restaurant); }
.item-card.meeting     { border-left-color: var(--color-meeting); }
.item-card.activity    { border-left-color: var(--color-activity); }
.item-card.transfer    { border-left-color: var(--color-transfer); }
.item-card.other       { border-left-color: var(--color-other); }

.item-card .item-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.item-card .item-type-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.item-card .item-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
}

.item-card .item-subtitle {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

.item-card .item-details {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border-light);
  font-size: 13px;
  color: var(--color-text-secondary);
}

.item-card .item-detail {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.item-card .item-detail-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
}

.item-card .item-detail-value {
  font-weight: 500;
  color: var(--color-text);
}

.item-card .item-notes {
  margin-top: 10px;
  padding: 10px 12px;
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.item-card .item-confirmation {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background-color: var(--color-bg);
  padding: 2px 8px;
  border-radius: var(--radius-xs);
}


/* ============================================================
   Flight Card — Special Layout
   ============================================================ */

.flight-route {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 0;
}

.flight-endpoint {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  text-align: center;
  min-width: 0;
}

.flight-endpoint.departure {
  align-items: flex-start;
  text-align: left;
}

.flight-endpoint.arrival {
  align-items: flex-end;
  text-align: right;
}

.flight-time {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.flight-code {
  font-size: 20px;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--color-text);
  letter-spacing: 0.04em;
}

.flight-city {
  font-size: 12px;
  color: var(--color-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 110px;
}

.flight-connector {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  min-width: 60px;
}

.flight-connector .flight-duration {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-muted);
}

.flight-connector .flight-arrow {
  display: flex;
  align-items: center;
  width: 100%;
  gap: 0;
}

.flight-connector .flight-arrow::before {
  content: '';
  flex: 1;
  height: 1px;
  background-color: var(--color-border);
}

.flight-connector .flight-arrow::after {
  content: '';
  width: 6px;
  height: 6px;
  border-top: 1.5px solid var(--color-text-muted);
  border-right: 1.5px solid var(--color-text-muted);
  transform: rotate(45deg);
  flex-shrink: 0;
}

.flight-connector .flight-stops {
  font-size: 11px;
  color: var(--color-warning);
  font-weight: 600;
}


/* ============================================================
   Buttons
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 40px;
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
  transition: background-color 0.15s ease, transform 0.1s ease, box-shadow 0.15s ease;
}

.btn:active {
  transform: scale(0.97);
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn-primary {
  background-color: var(--color-accent);
  color: #FFFFFF;
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
}

.btn-secondary {
  background-color: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-bg);
}

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

.btn-danger:hover {
  background-color: #DC2626;
  border-color: #DC2626;
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-text-secondary);
}

.btn-ghost:hover {
  background-color: var(--color-bg);
  color: var(--color-text);
}

.btn-sm {
  min-height: 32px;
  padding: 4px 12px;
  font-size: 13px;
  border-radius: var(--radius-xs);
}

.btn-icon {
  min-height: 36px;
  width: 36px;
  padding: 0;
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
}

.btn-icon:hover {
  background-color: var(--color-bg);
  color: var(--color-text);
}

.btn-icon svg,
.btn-icon .icon {
  width: 18px;
  height: 18px;
}

.btn:disabled,
.btn[disabled] {
  opacity: 0.5;
  pointer-events: none;
}

.btn-group {
  display: flex;
  gap: 8px;
}


/* ============================================================
   Forms
   ============================================================ */

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.form-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.form-label .required {
  color: var(--color-danger);
  margin-left: 2px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  height: 44px;
  padding: 0 12px;
  font-size: 15px;
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-input::placeholder,
.form-select::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}

.form-textarea {
  height: auto;
  min-height: 100px;
  padding: 10px 12px;
  resize: vertical;
  line-height: 1.5;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2364748B' viewBox='0 0 16 16'%3E%3Cpath d='M4.646 5.646a.5.5 0 0 1 .708 0L8 8.293l2.646-2.647a.5.5 0 0 1 .708.708l-3 3a.5.5 0 0 1-.708 0l-3-3a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  padding-right: 36px;
}

/* Error state */
.form-group.error .form-input,
.form-group.error .form-select,
.form-group.error .form-textarea {
  border-color: var(--color-danger);
}

.form-group.error .form-input:focus,
.form-group.error .form-select:focus,
.form-group.error .form-textarea:focus {
  box-shadow: 0 0 0 3px var(--color-danger-light);
}

.form-error {
  font-size: 13px;
  color: var(--color-danger);
  font-weight: 500;
}

.form-hint {
  font-size: 12px;
  color: var(--color-text-muted);
}

.form-row {
  display: flex;
  gap: 12px;
}

.form-row .form-group {
  flex: 1;
}

/* Checkbox & Radio */
.form-check {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 14px;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-accent);
  cursor: pointer;
}


/* ============================================================
   Modal
   ============================================================ */

.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 16px;
  animation: modal-overlay-in 0.2s ease;
}

.modal {
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  background-color: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modal-slide-in 0.25s ease;
}

.modal.modal-lg {
  max-width: 700px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--color-border-light);
}

.modal-header h2 {
  font-size: 18px;
}

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-xs);
  color: var(--color-text-muted);
  transition: background-color 0.15s ease, color 0.15s ease;
  flex-shrink: 0;
}

.modal-close:hover {
  background-color: var(--color-bg);
  color: var(--color-text);
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  padding: 16px 24px 20px;
  border-top: 1px solid var(--color-border-light);
}

@keyframes modal-overlay-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes modal-slide-in {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}


/* ============================================================
   Badges & Tags
   ============================================================ */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.5;
  border-radius: 20px;
  white-space: nowrap;
}

/* Status badges */
.badge-upcoming  { background-color: var(--color-accent-light);  color: var(--color-accent); }
.badge-active    { background-color: var(--color-success-light); color: var(--color-success); }
.badge-completed { background-color: var(--color-bg);            color: var(--color-text-muted); }
.badge-cancelled { background-color: var(--color-danger-light);  color: var(--color-danger); }
.badge-draft     { background-color: var(--color-bg);            color: var(--color-text-muted); }

/* Item-type badges */
.badge-flight     { background-color: rgba(59, 130, 246, 0.1);  color: var(--color-flight); }
.badge-hotel      { background-color: rgba(139, 92, 246, 0.1);  color: var(--color-hotel); }
.badge-car-rental { background-color: rgba(245, 158, 11, 0.1);  color: var(--color-car-rental); }
.badge-train      { background-color: rgba(16, 185, 129, 0.1);  color: var(--color-train); }
.badge-restaurant { background-color: rgba(239, 68, 68, 0.1);   color: var(--color-restaurant); }
.badge-meeting    { background-color: rgba(99, 102, 241, 0.1);  color: var(--color-meeting); }
.badge-activity   { background-color: rgba(236, 72, 153, 0.1);  color: var(--color-activity); }
.badge-transfer   { background-color: rgba(20, 184, 166, 0.1);  color: var(--color-transfer); }
.badge-other      { background-color: rgba(100, 116, 139, 0.1); color: var(--color-other); }

/* Confidence badges */
.badge-confidence-high   { background-color: var(--color-success-light); color: var(--color-success); }
.badge-confidence-medium { background-color: var(--color-warning-light); color: var(--color-warning); }
.badge-confidence-low    { background-color: var(--color-danger-light);  color: var(--color-danger); }


/* ============================================================
   Toast Notifications
   ============================================================ */

.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column-reverse;
  gap: 8px;
  pointer-events: none;
  max-width: 380px;
  width: 100%;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 16px;
  background-color: var(--color-surface);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  pointer-events: auto;
  animation: toast-slide-in 0.3s ease;
}

.toast.toast-exiting {
  animation: toast-slide-out 0.25s ease forwards;
}

.toast-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 1px;
}

.toast-content {
  flex: 1;
  min-width: 0;
}

.toast-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
}

.toast-message {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

.toast-dismiss {
  width: 20px;
  height: 20px;
  color: var(--color-text-muted);
  flex-shrink: 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.toast-dismiss:hover {
  color: var(--color-text);
}

/* Variants — left accent stripe */
.toast.toast-success { border-left: 3px solid var(--color-success); }
.toast.toast-error   { border-left: 3px solid var(--color-danger); }
.toast.toast-info    { border-left: 3px solid var(--color-accent); }
.toast.toast-warning { border-left: 3px solid var(--color-warning); }

.toast.toast-success .toast-icon { color: var(--color-success); }
.toast.toast-error   .toast-icon { color: var(--color-danger); }
.toast.toast-info    .toast-icon { color: var(--color-accent); }
.toast.toast-warning .toast-icon { color: var(--color-warning); }

@keyframes toast-slide-in {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes toast-slide-out {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(100%);
  }
}


/* ============================================================
   Empty States
   ============================================================ */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 24px;
}

.empty-state .empty-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background-color: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--color-text-muted);
  font-size: 28px;
}

.empty-state h3 {
  font-size: 17px;
  margin-bottom: 6px;
  color: var(--color-text);
}

.empty-state p {
  font-size: 14px;
  color: var(--color-text-secondary);
  max-width: 340px;
  line-height: 1.5;
  margin-bottom: 20px;
}


/* ============================================================
   Spinner / Loading
   ============================================================ */

.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.spinner-sm {
  width: 16px;
  height: 16px;
  border-width: 2px;
}

.spinner-lg {
  width: 36px;
  height: 36px;
  border-width: 4px;
}

.loading-overlay {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 24px;
}

.loading-overlay .spinner-text {
  margin-top: 12px;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.btn .spinner {
  width: 16px;
  height: 16px;
  border-width: 2px;
  border-color: rgba(255, 255, 255, 0.3);
  border-top-color: #FFFFFF;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}


/* ============================================================
   Shared Trip View (Public / Read-Only)
   ============================================================ */

.shared-view {
  min-height: 100vh;
  background-color: var(--color-bg);
  padding: 24px 16px 60px;
}

.shared-view .shared-content {
  max-width: 800px;
  margin: 0 auto;
}

.shared-view .shared-header {
  text-align: center;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}

.shared-view .shared-header h1 {
  font-size: 26px;
  margin-bottom: 8px;
}

.shared-view .shared-header .shared-meta {
  font-size: 14px;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.shared-view .shared-branding {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 14px;
  color: var(--color-text-muted);
}

.shared-view .item-card {
  cursor: default;
}

.shared-view .shared-footer {
  text-align: center;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
  font-size: 13px;
  color: var(--color-text-muted);
}


/* ============================================================
   Data Tables
   ============================================================ */

.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 14px;
}

.data-table th {
  text-align: left;
  padding: 10px 14px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text);
  vertical-align: middle;
}

.data-table tbody tr:nth-child(even) {
  background-color: var(--color-border-light);
}

.data-table tbody tr:hover {
  background-color: rgba(59, 130, 246, 0.04);
}

.data-table td:first-child {
  font-weight: 500;
}

.data-table .table-actions {
  display: flex;
  gap: 4px;
  justify-content: flex-end;
}

.table-wrapper {
  background-color: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow-x: auto;
}


/* ============================================================
   Confirmation Dialog
   ============================================================ */

.dialog {
  max-width: 420px;
}

.dialog .modal-body {
  text-align: center;
  padding: 32px 24px 20px;
}

.dialog .dialog-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 22px;
}

.dialog .dialog-icon.danger {
  background-color: var(--color-danger-light);
  color: var(--color-danger);
}

.dialog .dialog-icon.warning {
  background-color: var(--color-warning-light);
  color: var(--color-warning);
}

.dialog h3 {
  margin-bottom: 8px;
}

.dialog p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.dialog .modal-footer {
  justify-content: center;
  gap: 10px;
}


/* ============================================================
   Traveler Cards
   ============================================================ */

.traveler-card {
  background-color: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: box-shadow 0.2s ease;
}

.traveler-card:hover {
  box-shadow: var(--shadow-md);
}

.traveler-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  flex-shrink: 0;
}

.traveler-info {
  flex: 1;
  min-width: 0;
}

.traveler-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.traveler-email {
  font-size: 13px;
  color: var(--color-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.traveler-trip-count {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
  background-color: var(--color-bg);
  padding: 4px 10px;
  border-radius: 20px;
  flex-shrink: 0;
}

.travelers-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}


/* ============================================================
   Parse Preview / Results
   ============================================================ */

.parse-preview {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.parse-item {
  background-color: var(--color-surface);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.parse-item-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.parse-item-type {
  display: flex;
  align-items: center;
  gap: 6px;
}

.parse-confidence {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
}

.confidence-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.confidence-dot.high   { background-color: var(--color-success); }
.confidence-dot.medium { background-color: var(--color-warning); }
.confidence-dot.low    { background-color: var(--color-danger); }

.parse-item-details {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.parse-item-field {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.parse-item-field .field-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
}

.parse-item-field .field-value {
  font-weight: 500;
  color: var(--color-text);
}

.parse-item .parse-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 4px;
}

.parse-modal .modal {
  max-width: 700px;
}

.parse-source {
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--color-text-secondary);
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.6;
  max-height: 200px;
  overflow-y: auto;
  margin-bottom: 20px;
}


/* ============================================================
   Search & Filters
   ============================================================ */

.search-bar {
  position: relative;
  max-width: 400px;
}

.search-bar .search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--color-text-muted);
  pointer-events: none;
}

.search-bar .form-input {
  padding-left: 38px;
}

.filter-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 500;
  border-radius: 20px;
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  user-select: none;
}

.filter-chip:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.filter-chip.active {
  background-color: var(--color-accent-light);
  border-color: var(--color-accent);
  color: var(--color-accent);
}


/* ============================================================
   Tabs
   ============================================================ */

.tabs {
  display: flex;
  border-bottom: 1px solid var(--color-border);
  gap: 0;
  margin-bottom: 20px;
  overflow-x: auto;
}

.tab {
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.tab:hover {
  color: var(--color-text);
}

.tab.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
  font-weight: 600;
}


/* ============================================================
   Cards — General
   ============================================================ */

.card {
  background-color: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border-light);
}

.card-header h3 {
  font-size: 16px;
}

.card-body {
  padding: 20px;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  padding: 12px 20px;
  border-top: 1px solid var(--color-border-light);
}


/* ============================================================
   Dropdown Menu
   ============================================================ */

.dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 180px;
  background-color: var(--color-surface);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  padding: 4px;
  z-index: 200;
  opacity: 0;
  transform: translateY(4px);
  pointer-events: none;
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.dropdown.open .dropdown-menu {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  font-size: 14px;
  color: var(--color-text);
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.dropdown-item:hover {
  background-color: var(--color-bg);
}

.dropdown-item.danger {
  color: var(--color-danger);
}

.dropdown-item.danger:hover {
  background-color: var(--color-danger-light);
}

.dropdown-divider {
  height: 1px;
  background-color: var(--color-border-light);
  margin: 4px 0;
}


/* ============================================================
   Tooltip
   ============================================================ */

[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 500;
  color: #FFFFFF;
  background-color: var(--color-primary);
  border-radius: var(--radius-xs);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease;
  z-index: 300;
}

[data-tooltip]:hover::after {
  opacity: 1;
}


/* ============================================================
   Section Dividers / Utilities
   ============================================================ */

.divider {
  height: 1px;
  background-color: var(--color-border);
  margin: 20px 0;
}

.text-muted      { color: var(--color-text-muted); }
.text-secondary  { color: var(--color-text-secondary); }
.text-success    { color: var(--color-success); }
.text-danger     { color: var(--color-danger); }
.text-warning    { color: var(--color-warning); }
.text-accent     { color: var(--color-accent); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.truncate {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm  { gap: 6px; }
.gap-md  { gap: 12px; }
.gap-lg  { gap: 20px; }

.mt-sm { margin-top: 8px; }
.mt-md { margin-top: 16px; }
.mt-lg { margin-top: 24px; }
.mb-sm { margin-bottom: 8px; }
.mb-md { margin-bottom: 16px; }
.mb-lg { margin-bottom: 24px; }


/* ============================================================
   Page Transition
   ============================================================ */

.page-enter {
  animation: page-fade-in 0.2s ease;
}

@keyframes page-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}


/* ============================================================
   Responsive — Tablet & Desktop
   ============================================================ */

@media (min-width: 768px) {
  /* Show sidebar, hide bottom nav */
  .sidebar {
    display: flex;
  }

  .bottom-nav {
    display: none;
  }

  .main-content {
    margin-left: var(--sidebar-width);
    padding: 24px;
    padding-bottom: 40px;
  }

  /* Stats grid: 4 columns */
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
  }

  /* Trips grid: 2 columns */
  .trips-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Travelers grid: 2 columns */
  .travelers-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Toast: position further from edge */
  .toast-container {
    bottom: 32px;
    right: 32px;
  }
}


/* ============================================================
   Responsive — Large Desktop
   ============================================================ */

@media (min-width: 1024px) {
  .main-content {
    padding: 32px 40px;
  }

  .stats-grid {
    gap: 20px;
  }

  .stat-card {
    padding: 24px;
  }

  .stat-value {
    font-size: 32px;
  }

  .trips-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .travelers-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}


/* ============================================================
   Reduced Motion
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .trip-card:hover {
    transform: none;
  }

  .btn:active {
    transform: none;
  }
}


/* ============================================================
   Print
   ============================================================ */

@media print {
  .sidebar,
  .bottom-nav,
  .btn,
  .toast-container,
  .modal-overlay,
  .page-header-actions,
  .trip-actions,
  .item-card .item-actions,
  .filter-bar,
  .search-bar {
    display: none !important;
  }

  body {
    background: #FFFFFF;
    color: #000000;
    font-size: 12pt;
  }

  .main-content {
    margin-left: 0;
    padding: 0;
  }

  .trip-card,
  .item-card,
  .stat-card,
  .card,
  .traveler-card {
    box-shadow: none;
    break-inside: avoid;
    border: 1px solid #E2E8F0;
  }

  .trip-card:hover,
  .item-card:hover,
  .traveler-card:hover {
    transform: none;
    box-shadow: none;
  }

  a {
    color: inherit;
    text-decoration: underline;
  }

  h1, h2, h3 {
    break-after: avoid;
  }

  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .timeline::before {
    background-color: #CBD5E1;
  }
}