body {
  margin: 0;
  font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #f8fafc;
  color: #1e293b;
  line-height: 1.6;
}

.header {
  position: fixed;
  top: 0;
  width: 100%;
  background: #1e3a8a;
  color: white;
  padding: 1rem 2rem;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  z-index: 1000;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo-text {
  font-size: 1.5rem;
  font-weight: bold;
}

.main-layout {
  display: block; /* Changed from flex */
}

.sidebar {
  position: fixed;
  left: 0;
  top: 80px; /* Below header */
  width: 250px;
  background: #e2e8f0;
  padding: 1rem;
  box-shadow: 2px 0 4px rgba(0,0,0,0.1);
  height: calc(100vh - 140px);
  overflow-y: hidden;
}

.menu-category {
  margin-bottom: 2rem;
}

.menu-category h3 {
  margin: 0;
  color: #1e3a8a;
  font-size: 1.1rem;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 4px;
  transition: background 0.3s;
}

.menu-category h3:hover {
  background: #cbd5e1;
}

.menu-button {
  width: 100%;
  display: block;
  text-align: left;
  padding: 0.75rem 0.85rem;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: #1e293b;
  font-size: 0.98rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease;
}

.menu-button:hover,
.menu-button:focus {
  background: #cbd5e1;
}

.menu-button.subitem {
  margin-left: 1rem;
  background: #dbe6f0;
}

.rotation-view {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.rotation-header {
  padding: 1.25rem 1.5rem;
  background: #0f172a;
  color: white;
  border-radius: 1rem 1rem 0 0;
}

.rotation-header h2 {
  margin: 0;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
}

.rotation-subtitle {
  margin: 0.35rem 0 0;
  color: #cbd5e1;
  font-size: 0.95rem;
}

.rotation-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 1rem 1.5rem;
  background: white;
  border-bottom: 1px solid #e2e8f0;
}

.rotation-filter-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-width: 160px;
}

.rotation-filter-group label {
  font-size: 0.65rem;
  font-weight: 700;
  color: #475569;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.rotation-selector,
.rotation-input {
  min-width: 160px;
  border: 1px solid #cbd5e1;
  border-radius: 0.75rem;
  padding: 0.75rem 0.9rem;
  color: #0f172a;
  background: white;
  font-size: 0.95rem;
}

.rotation-segmented {
  display: flex;
  border: 1px solid #cbd5e1;
  border-radius: 999px;
  overflow: hidden;
  background: #f8fafc;
}

.rotation-segmented button {
  flex: 1;
  border: none;
  padding: 0.65rem 0.9rem;
  background: transparent;
  color: #475569;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
}

.rotation-segmented button.active {
  background: #2563eb;
  color: white;
}

.rotation-checkbox {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  color: #334155;
}

.rotation-reset {
  margin-top: 0.5rem;
  border: 1px solid #cbd5e1;
  border-radius: 0.75rem;
  background: white;
  padding: 0.6rem 0.85rem;
  color: #334155;
  cursor: pointer;
}

.rotation-chart {
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 0 0 1rem 1rem;
  overflow: hidden;
}

.rotation-chart-header {
  display: flex;
  position: sticky;
  top: 0;
  background: white;
  z-index: 2;
  border-bottom: 1px solid #e2e8f0;
}

.rotation-left-col {
  width: 240px;
  min-width: 240px;
  padding: 0.9rem 1rem;
  background: #f8fafc;
  border-right: 1px solid #e2e8f0;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  color: #475569;
  font-weight: 700;
}

.rotation-body {
  display: flex;
  overflow: auto;
  max-height: calc(100vh - 340px);
}

.gantt-grid {
  display: flex;
  min-width: 960px;
  position: relative;
}

.month-label-row {
  min-width: 90px;
  padding: 0.9rem 0.75rem;
  border-right: 1px solid #e5e7eb;
  font-size: 0.78rem;
  color: #334155;
  background: white;
}

.rotation-row {
  display: flex;
  width: 100%;
}

.rotation-vessel-row,
.rotation-rank-row,
.rotation-rfe-row {
  display: flex;
  width: 100%;
  position: relative;
}

.rotation-vessel-row {
  min-height: 48px;
  background: #0f172a;
  color: white;
  align-items: center;
}

.rotation-vessel-row .rank-label-col {
  background: #0f172a;
  color: white;
  border-right: 1px solid #e2e8f0;
}

.vessel-name {
  font-size: 0.95rem;
  font-weight: 700;
}

.vessel-meta {
  font-size: 0.8rem;
  color: #cbd5e1;
  margin-top: 0.25rem;
}

.rotation-rank-row,
.rotation-rfe-row {
  min-height: 62px;
  border-bottom: 1px solid #e5e7eb;
  align-items: center;
}

.rotation-rfe-row {
  min-height: 50px;
  background: #f8fbff;
}

.rank-label-col {
  padding: 0.95rem 1rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: #0f172a;
  display: flex;
  align-items: center;
}

.gantt-track {
  position: relative;
  flex: 1;
  min-width: 720px;
  padding: 0.65rem 0;
}

.gantt-grid-row {
  display: flex;
  min-width: 960px;
  height: 100%;
}

.grid-cell {
  min-width: 90px;
  width: 90px;
  border-right: 1px solid #e5e7eb;
}

.gantt-bar {
  position: absolute;
  border-radius: 0.85rem;
  height: 28px;
  top: 18px;
  display: inline-flex;
  align-items: center;
  padding: 0 0.75rem;
  font-size: 0.75rem;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bar-onboard {
  background: #5b7fbd;
  color: white;
}

.bar-future-service {
  background: #93b8d8;
  color: #0f172a;
}

.today-line {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: #16a34a;
  z-index: 10;
}

.rfa-horizon-line {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: #d97706;
  z-index: 9;
}

.rfa-horizon-label {
  position: absolute;
  top: 6px;
  font-size: 0.7rem;
  font-weight: 800;
  color: #b45309;
  transform: translateX(-50%);
  white-space: nowrap;
  z-index: 11;
}

.rfa-bottom {
  top: 28px;
  height: 18px;
}

.rfa-rfe { background: #7dd3fc; border: 1px solid #0ea5e9; color: #0f172a; }
.rfa-rfx { background: #5eead4; border: 1px solid #14b8a6; color: #0f172a; }
.rfa-rfp { background: #d8b4fe; border: 1px solid #a855f7; color: #0f172a; }
.rfa-rfs { background: #fda4af; border: 1px solid #f43f5e; color: #0f172a; }
.rfa-rfr { background: #fcd34d; border: 1px solid #f59e0b; color: #0f172a; }

.rfa-active {}
.rfa-approval { opacity: 0.95; }
.rfa-preparation { opacity: 0.85; }
.rfa-completed { filter: saturate(0.4); }

.rotation-empty {
  padding: 1.5rem;
  color: #475569;
}

.content {
  margin-left: 250px; /* Space for sidebar */
  padding: 2rem;
  background: white;
  height: calc(100vh - 140px);
  overflow-y: auto;
}

.footer {
  position: fixed;
  bottom: 0;
  width: 100%;
  background: #1e3a8a;
  color: white;
  padding: 1rem 2rem;
  text-align: center;
  z-index: 1000;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  color: white;
  text-decoration: none;
  font-weight: 500;
}

.social-links a:hover {
  opacity: 0.8;
}

@media (max-width: 768px) {
  .main-layout {
    flex-direction: column;
  }
  .sidebar {
    width: 100%;
    height: auto;
    order: -1;
  }
  .header-content {
    flex-direction: column;
    gap: 1rem;
  }
  .footer-content {
    flex-direction: column;
    gap: 1rem;
  }
}