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

:root {
  --bg: #F9FAFB;
  --card: #FFFFFF;
  --text: #111827;
  --text2: #6B7280;
  --border: #E5E7EB;
  --primary: #2563EB;
  --success: #059669;
  --warning: #D97706;
  --danger: #DC2626;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
}

body {
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

/* Header */
header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 2rem;
  height: 60px;
}
header h1 {
  font-size: 1.15rem;
  font-weight: 700;
  white-space: nowrap;
}
nav { display: flex; gap: 0.25rem; }
.nav-tab {
  background: none;
  border: none;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text2);
  cursor: pointer;
  border-radius: 6px;
  transition: all 0.15s;
}
.nav-tab:hover { background: var(--bg); color: var(--text); }
.nav-tab.active { background: var(--primary); color: white; }

/* Main */
main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem;
}

/* Buttons */
.btn-primary {
  background: var(--primary);
  color: white;
  border: none;
  padding: 0.5rem 1.25rem;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: opacity 0.15s;
}
.btn-primary:hover { opacity: 0.9; }
.btn-secondary {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 0.5rem 1.25rem;
  border-radius: 6px;
  font-size: 0.875rem;
  cursor: pointer;
}
.btn-secondary:hover { background: var(--bg); }
.btn-icon {
  background: none;
  border: none;
  font-size: 1.1rem;
  cursor: pointer;
  padding: 0.35rem;
  border-radius: 4px;
  color: var(--text2);
  line-height: 1;
}
.btn-icon:hover { background: var(--bg); color: var(--text); }
.btn-icon.danger:hover { color: var(--danger); }

/* Dashboard */
.today-banner {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow);
}
.today-banner h2 { font-size: 1.1rem; font-weight: 600; }
.in-zone { margin-top: 0.5rem; display: flex; align-items: center; gap: 0.5rem; }
.not-in-zone { margin-top: 0.5rem; color: var(--text2); }
.zone-badge {
  display: inline-block;
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
}
.zone-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}
.status-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}
.status-card.danger { border-color: #FCA5A5; }
.status-card.warning { border-color: #FCD34D; }
.status-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}
.status-header h3 { font-size: 1rem; flex: 1; }
.rule-badge {
  font-size: 0.75rem;
  color: var(--text2);
  background: var(--bg);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
}

.progress-ring-container {
  position: relative;
  width: 120px;
  height: 120px;
  margin: 0 auto 1rem;
}
.progress-ring { width: 100%; height: 100%; transform: rotate(-90deg); }
.progress-bg { fill: none; stroke: var(--bg); stroke-width: 8; }
.progress-fill {
  fill: none;
  stroke-width: 8;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.6s ease;
}
.progress-text {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.days-remaining { font-size: 1.75rem; font-weight: 700; line-height: 1; }
.days-label { font-size: 0.75rem; color: var(--text2); }

.status-details { display: flex; flex-direction: column; gap: 0.5rem; }
.detail-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.875rem;
}
.detail-row span { color: var(--text2); }
.warning-row strong { color: var(--warning); }
.active-row strong { color: var(--success); }

/* Upcoming */
.upcoming-section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow);
}
.upcoming-section h3 { font-size: 0.95rem; margin-bottom: 0.75rem; }
.upcoming-list { display: flex; flex-direction: column; gap: 0.5rem; }
.upcoming-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
}
.upcoming-item:last-child { border-bottom: none; }
.upcoming-info { flex: 1; }
.upcoming-info strong { display: block; font-size: 0.875rem; }
.upcoming-info span { font-size: 0.75rem; color: var(--text2); }
.days-until {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary);
  white-space: nowrap;
}

/* Calendar — Lufthansa-inspired */
:root { --navy: #1C2340; }

.cal-view { }
.cal-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.cal-legend {
  display: flex;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--text2);
}
.legend-item { display: flex; align-items: center; gap: 0.35rem; }
.legend-swatch { display: inline-block; width: 14px; height: 14px; border-radius: 3px; }
.window-swatch { background: rgba(219, 39, 119, 0.1); border: 1px solid rgba(219, 39, 119, 0.25); }
.cal-hint { font-size: 0.85rem; color: var(--text2); }

/* Selection bar */
.sel-bar {
  background: var(--card);
  border: 2px solid var(--navy);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  position: sticky;
  top: 68px;
  z-index: 50;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}
.sel-dates { display: flex; align-items: center; gap: 1rem; }
.sel-field label { display: block; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text2); }
.sel-field strong { font-size: 1rem; color: var(--navy); }
.sel-field.active { border-bottom: 2px solid var(--navy); padding-bottom: 2px; }
.sel-field.waiting strong { color: var(--text2); }
.sel-arrow { color: var(--text2); font-size: 1.1rem; }
.sel-form { display: flex; align-items: center; gap: 0.5rem; flex: 1; }
.sel-form select, .sel-form input {
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.85rem;
  font-family: inherit;
  background: var(--card);
}
.sel-form select { max-width: 160px; }
.sel-form input { flex: 1; min-width: 100px; }
.sel-close {
  background: none; border: none;
  font-size: 1.4rem; color: var(--text2);
  cursor: pointer; padding: 0.25rem;
  margin-left: auto; line-height: 1;
}
.sel-close:hover { color: var(--text); }

/* Month grid */
.cal-months {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem 3rem;
}
.cm {
  padding: 0;
}
.cm h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 0.75rem;
  padding-left: 0.25rem;
}
.cm h3 span { font-weight: 400; color: var(--text2); }
.cm-current h3 { color: var(--navy); }

.cg {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
}
.cd {
  text-align: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text2);
  padding: 0.5rem 0;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* Day cells */
.cc {
  position: relative;
  text-align: center;
  padding: 0.6rem 0.25rem;
  min-height: 56px;
  cursor: pointer;
  transition: background 0.1s;
}
.cc:hover:not(.empty) { background: var(--bg); border-radius: 8px; }
.cc.empty { cursor: default; }

.cn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--text);
  border-radius: 50%;
}
.ct {
  display: block;
  font-size: 0.6rem;
  color: var(--text2);
  margin-top: 1px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 180-day window */
.cc.in-window { background: rgba(219, 39, 119, 0.04); }

/* Today */
.cc.today .cn {
  background: var(--navy);
  color: white;
  font-weight: 600;
}

/* Trip ranges */
.cc.trip-mid { background: var(--zc, #3B82F6); background: color-mix(in srgb, var(--zc, #3B82F6) 12%, white); }
.cc.trip-start { background: linear-gradient(to right, transparent 50%, color-mix(in srgb, var(--zc, #3B82F6) 12%, white) 50%); }
.cc.trip-start .cn { background: var(--zc); color: white; font-weight: 600; }
.cc.trip-end { background: linear-gradient(to left, transparent 50%, color-mix(in srgb, var(--zc, #3B82F6) 12%, white) 50%); }
.cc.trip-end .cn { background: var(--zc); color: white; font-weight: 600; }
.cc.trip-cap .cn { background: var(--zc); color: white; font-weight: 600; }

/* Selection range */
.cc.sel-mid { background: #EEEEF2; }
.cc.sel-start { background: linear-gradient(to right, transparent 50%, #EEEEF2 50%); }
.cc.sel-start .cn { background: var(--navy); color: white; font-weight: 600; }
.cc.sel-end { background: linear-gradient(to left, transparent 50%, #EEEEF2 50%); }
.cc.sel-end .cn { background: var(--navy); color: white; font-weight: 600; }
.cc.sel-single .cn { background: var(--navy); color: white; font-weight: 600; }

/* Trips */
.trips-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}
.trips-header h2 { font-size: 1.15rem; }
.trips-list { display: flex; flex-direction: column; gap: 0.75rem; }
.trip-card {
  display: flex;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.trip-color { width: 4px; flex-shrink: 0; }
.trip-info { flex: 1; padding: 1rem 1.25rem; }
.trip-title { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 0.25rem; }
.trip-title strong { font-size: 0.95rem; }
.trip-zone-badge {
  font-size: 0.65rem;
  color: white;
  padding: 0.1rem 0.45rem;
  border-radius: 10px;
  font-weight: 600;
}
.status-badge {
  font-size: 0.65rem;
  padding: 0.1rem 0.45rem;
  border-radius: 10px;
  font-weight: 600;
}
.status-badge.active { background: #D1FAE5; color: #065F46; }
.status-badge.future { background: #DBEAFE; color: #1E40AF; }
.trip-dates { font-size: 0.85rem; color: var(--text2); }
.trip-duration { margin-left: 0.5rem; font-weight: 500; color: var(--text); }
.trip-notes { font-size: 0.8rem; color: var(--text2); margin-top: 0.35rem; }
.trip-actions {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.25rem;
  padding: 0.5rem;
}
.empty-state { text-align: center; color: var(--text2); padding: 3rem 1rem; }

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}
.modal {
  background: var(--card);
  border-radius: var(--radius);
  padding: 1.5rem;
  width: 90%;
  max-width: 500px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}
.modal h3 { margin-bottom: 1rem; font-size: 1.1rem; }
.form-group { margin-bottom: 0.75rem; }
.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text2);
  margin-bottom: 0.25rem;
}
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.875rem;
  font-family: inherit;
  background: var(--card);
  color: var(--text);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}
.form-row { display: flex; gap: 0.75rem; }
.form-row .form-group { flex: 1; }
.form-actions { display: flex; justify-content: flex-end; gap: 0.5rem; margin-top: 1rem; }

/* Planner */
.planner-desc { color: var(--text2); margin-bottom: 1.25rem; font-size: 0.9rem; }
.planner-form {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow);
}
.planner-form .form-row { flex-wrap: wrap; }
.plan-alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  margin-bottom: 1.25rem;
}
.plan-alert h4 { margin-bottom: 0.35rem; }
.plan-alert p { font-size: 0.875rem; margin-top: 0.25rem; }
.plan-alert.success { background: #D1FAE5; border: 1px solid #6EE7B7; color: #065F46; }
.plan-alert.danger { background: #FEE2E2; border: 1px solid #FCA5A5; color: #991B1B; }

.planner-quick { margin-top: 1.5rem; }
.planner-quick h3 { font-size: 1rem; margin-bottom: 0.75rem; }
.quick-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}
.quick-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow);
}
.quick-header { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.75rem; }
.quick-stats { display: flex; flex-direction: column; gap: 0.4rem; }
.quick-stats > div {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
}
.quick-stats span { color: var(--text2); }

/* States */
.loading, .error-state {
  text-align: center;
  padding: 3rem;
  color: var(--text2);
}
.error-state h2 { color: var(--danger); margin-bottom: 0.5rem; }
.error-state code { background: var(--bg); padding: 0.2rem 0.5rem; border-radius: 4px; font-size: 0.85rem; }

/* Responsive */
@media (max-width: 640px) {
  .header-inner { gap: 1rem; }
  .nav-tab { padding: 0.4rem 0.65rem; font-size: 0.8rem; }
  header h1 { font-size: 1rem; }
  .status-grid { grid-template-columns: 1fr; }
  .cal-months { grid-template-columns: 1fr; gap: 1.5rem; }
  .sel-bar { position: static; }
  .sel-dates { flex-wrap: wrap; }
  .sel-form { flex-direction: column; align-items: stretch; }
  .form-row { flex-direction: column; gap: 0; }
  .cal-day { min-height: 60px; }
  .cal-label { display: none; }
}