:root {
  --navy: #0B1F3A;
  --navy-mid: #112B4F;
  --navy-light: #1A3C6B;
  --blue: #2563EB;
  --blue-light: #3B82F6;
  --amber: #F59E0B;
  --amber-light: #FEF3C7;
  --green: #059669;
  --green-light: #D1FAE5;
  --red: #DC2626;
  --red-light: #FEE2E2;
  --orange: #EA580C;
  --orange-light: #FFEDD5;
  --gray: #6B7280;
  --gray-light: #F3F4F6;
  --white: #FFFFFF;
  --border: #1E3A5F;
  --text: #E2E8F0;
  --text-muted: #94A3B8;
  --font: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body { font-family: var(--font); background: var(--navy); color: var(--text); font-size: 14px; }

::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: var(--navy-mid); }
::-webkit-scrollbar-thumb { background: var(--navy-light); border-radius: 3px; }

/* Loader */
.loader-screen { position: fixed; inset: 0; background: var(--navy); display: flex; align-items: center; justify-content: center; z-index: 9999; }
.loader-inner { text-align: center; }
.loader-logo { font-family: var(--font-mono); font-size: 42px; font-weight: 600; color: var(--amber); letter-spacing: 6px; margin-bottom: 6px; }
.loader-sub { font-size: 13px; color: var(--text-muted); margin-bottom: 24px; }
.spinner { width: 32px; height: 32px; border: 3px solid var(--border); border-top-color: var(--blue); border-radius: 50%; animation: spin 0.8s linear infinite; margin: 0 auto; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Login */
.login-screen { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 16px; }
.login-card { background: var(--navy-mid); border: 1px solid var(--border); border-radius: 14px; padding: 36px 32px; width: 100%; max-width: 400px; }
.login-logo { font-family: var(--font-mono); font-size: 28px; font-weight: 600; color: var(--amber); letter-spacing: 4px; text-align: center; margin-bottom: 4px; }
.login-title { text-align: center; font-size: 14px; color: var(--text-muted); margin-bottom: 28px; }
.login-error { background: var(--red-light); color: var(--red); padding: 10px 14px; border-radius: 7px; font-size: 13px; margin-bottom: 16px; display: none; }

/* Layout */
.app-shell { display: flex; height: 100vh; overflow: hidden; }
.sidebar { width: 220px; background: var(--navy-mid); border-right: 1px solid var(--border); display: flex; flex-direction: column; flex-shrink: 0; }
.sidebar-brand { padding: 18px 16px 14px; border-bottom: 1px solid var(--border); }
.sidebar-brand-tag { font-size: 10px; font-weight: 700; color: var(--amber); letter-spacing: 2px; text-transform: uppercase; margin-bottom: 3px; }
.sidebar-brand-name { font-size: 14px; font-weight: 700; color: var(--white); }
.sidebar-brand-ver { font-family: var(--font-mono); font-size: 10px; color: var(--text-muted); margin-top: 3px; }
.sidebar-nav { flex: 1; padding: 10px 8px; overflow-y: auto; }
.nav-item { display: flex; align-items: center; gap: 10px; width: 100%; padding: 10px 12px; border-radius: 7px; border: none; background: transparent; color: var(--text-muted); font-family: var(--font); font-size: 13px; font-weight: 400; text-align: left; cursor: pointer; margin-bottom: 2px; transition: all 0.15s; }
.nav-item:hover { background: rgba(37,99,235,0.12); color: var(--text); }
.nav-item.active { background: var(--blue); color: var(--white); font-weight: 600; }
.nav-icon { font-size: 15px; width: 18px; flex-shrink: 0; }
.sidebar-footer { padding: 12px 14px; border-top: 1px solid var(--border); }
.sidebar-footer-name { font-size: 12px; font-weight: 600; color: var(--text); }
.sidebar-footer-role { font-size: 11px; color: var(--amber); text-transform: uppercase; letter-spacing: 0.5px; }
.sidebar-footer-date { font-size: 10px; color: var(--gray); margin-top: 4px; }
.logout-btn { margin-top: 8px; font-size: 11px; color: var(--text-muted); background: none; border: 1px solid var(--border); border-radius: 5px; padding: 5px 10px; cursor: pointer; font-family: var(--font); }
.logout-btn:hover { color: var(--red); border-color: var(--red); }
.main-content { flex: 1; overflow-y: auto; }
.page { padding: 22px 24px; }
.page-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 20px; gap: 12px; flex-wrap: wrap; }
.page-title { font-size: 19px; font-weight: 700; color: var(--white); }
.page-sub { font-size: 12px; color: var(--text-muted); margin-top: 3px; }

/* Cards */
.card { background: var(--navy-mid); border: 1px solid var(--border); border-radius: 10px; padding: 18px; margin-bottom: 16px; }
.card-title { font-size: 13px; font-weight: 700; color: var(--white); margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 16px; }
.stat-card { background: var(--navy-mid); border: 1px solid var(--border); border-radius: 10px; padding: 18px 14px; text-align: center; }
.stat-value { font-family: var(--font-mono); font-size: 28px; font-weight: 600; }
.stat-label { font-size: 11px; font-weight: 600; color: var(--text-muted); margin-top: 4px; text-transform: uppercase; letter-spacing: 0.8px; }

/* Filters */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; }
.filter-bar input, .filter-bar select { flex: 1; min-width: 150px; }

/* Forms */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 11px; font-weight: 600; color: var(--text-muted); margin-bottom: 5px; letter-spacing: 0.5px; text-transform: uppercase; }
.field label .req { color: var(--red); }
input, select, textarea { font-family: var(--font); background: var(--navy); border: 1px solid var(--border); color: var(--text); border-radius: 6px; padding: 9px 12px; font-size: 13px; width: 100%; outline: none; transition: border-color 0.15s; -webkit-appearance: none; }
input:focus, select:focus, textarea:focus { border-color: var(--blue); }
select option { background: var(--navy-mid); }
textarea { resize: vertical; min-height: 70px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 6px; border: none; border-radius: 6px; font-family: var(--font); font-weight: 600; cursor: pointer; transition: all 0.15s; padding: 9px 18px; font-size: 13px; }
.btn-primary { background: var(--blue); color: var(--white); }
.btn-primary:hover { background: var(--blue-light); }
.btn-amber { background: var(--amber); color: var(--navy); }
.btn-amber:hover { filter: brightness(1.08); }
.btn-success { background: var(--green); color: var(--white); }
.btn-danger { background: var(--red); color: var(--white); }
.btn-ghost { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }
.btn-ghost:hover { color: var(--text); border-color: var(--text-muted); }
.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Table */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead tr { background: var(--navy-light); }
th { padding: 10px 14px; text-align: left; font-weight: 600; color: var(--text-muted); font-size: 11px; letter-spacing: 0.8px; text-transform: uppercase; white-space: nowrap; border-bottom: 1px solid var(--border); }
td { padding: 10px 14px; color: var(--text); border-bottom: 1px solid var(--border); vertical-align: middle; }
tbody tr:nth-child(even) { background: rgba(255,255,255,0.02); }
tbody tr:hover { background: rgba(37,99,235,0.08); }
.no-data { text-align: center; padding: 40px; color: var(--text-muted); font-size: 13px; }
.mono { font-family: var(--font-mono); }
.text-amber { color: var(--amber); }
.text-green { color: var(--green); }
.text-red { color: var(--red); }
.text-muted { color: var(--text-muted); }
.text-bold { font-weight: 600; color: var(--white); }

/* Badges */
.badge { display: inline-flex; align-items: center; border-radius: 4px; padding: 2px 8px; font-size: 11px; font-weight: 600; letter-spacing: 0.4px; white-space: nowrap; }
.badge-green { background: var(--green-light); color: var(--green); }
.badge-orange { background: var(--orange-light); color: var(--orange); }
.badge-gray { background: var(--gray-light); color: var(--gray); }
.badge-blue { background: #DBEAFE; color: var(--blue); }
.badge-red { background: var(--red-light); color: var(--red); }
.badge-amber { background: var(--amber-light); color: #92400E; }
.badge-green-solid { background: var(--green); color: var(--white); }
.badge-blue-solid { background: var(--blue); color: var(--white); }
.badge-orange-solid { background: var(--orange); color: var(--white); }
.badge-red-solid { background: var(--red); color: var(--white); }

/* Modal */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.75); z-index: 8000; display: flex; align-items: center; justify-content: center; padding: 16px; }
.modal { background: var(--navy-mid); border: 1px solid var(--border); border-radius: 12px; width: 100%; max-width: 540px; max-height: 90vh; overflow-y: auto; }
.modal-lg { max-width: 640px; }
.modal-header { padding: 15px 20px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; position: sticky; top: 0; background: var(--navy-mid); z-index: 1; }
.modal-title { font-weight: 700; font-size: 15px; color: var(--white); }
.modal-close { background: none; border: none; color: var(--text-muted); font-size: 22px; cursor: pointer; line-height: 1; padding: 0 4px; }
.modal-close:hover { color: var(--white); }
.modal-body { padding: 20px; }
.modal-footer { display: flex; gap: 10px; justify-content: flex-end; margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border); }

/* Alert boxes */
.alert { border-radius: 8px; padding: 12px 14px; margin-bottom: 10px; }
.alert-red { background: var(--red-light); }
.alert-amber { background: var(--amber-light); }
.alert-green { background: var(--green-light); }
.alert-title { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; }
.alert-red .alert-title { color: var(--red); }
.alert-amber .alert-title { color: var(--orange); }
.alert-name { font-size: 13px; font-weight: 600; color: var(--navy); margin-top: 3px; }
.alert-sub { font-size: 11px; color: var(--gray); margin-top: 2px; }

/* Toast */
.toast { position: fixed; bottom: 24px; right: 24px; z-index: 2000; padding: 13px 20px; border-radius: 8px; font-size: 13px; font-weight: 600; box-shadow: 0 8px 24px rgba(0,0,0,0.4); color: var(--white); transform: translateY(0); transition: all 0.2s; }
.toast-success { background: var(--green); }
.toast-error { background: var(--red); }

/* Progress bar */
.progress { height: 5px; background: var(--border); border-radius: 3px; overflow: hidden; margin-top: 5px; }
.progress-fill { height: 100%; border-radius: 3px; transition: width 0.4s; }

/* Crew info box in movement log */
.crew-info-box { background: var(--navy); border-radius: 7px; padding: 10px 14px; margin-bottom: 14px; font-size: 12px; color: var(--text-muted); line-height: 1.6; }

/* Dashboard grid */
.dash-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }

/* Mobile responsive */
@media (max-width: 700px) {
  .sidebar { width: 56px; }
  .sidebar-brand-name, .sidebar-brand-tag, .sidebar-brand-ver, .nav-item span:last-child, .sidebar-footer-name, .sidebar-footer-role, .sidebar-footer-date, .logout-btn { display: none; }
  .nav-item { justify-content: center; padding: 12px; }
  .nav-icon { width: auto; }
  .stat-grid { grid-template-columns: repeat(2,1fr); }
  .form-grid { grid-template-columns: 1fr; }
  .dash-grid { grid-template-columns: 1fr; }
  .page { padding: 14px 12px; }
  .modal { max-width: 100%; max-height: 95vh; }
}
@media (max-width: 480px) {
  .stat-grid { grid-template-columns: repeat(2,1fr); }
  .page-header { flex-direction: column; align-items: flex-start; }
}