:root {
  --navy: #0B1D3A;
  --navy-light: #142C55;
  --navy-lighter: #1E3A6F;
  --orange: #E8751A;
  --orange-dark: #C45F0F;
  --white: #FFFFFF;
  --gray-100: #F5F6F8;
  --gray-200: #E2E5EA;
  --gray-400: #9AA3B0;
  --gray-600: #5A6575;
  --gray-800: #2D3642;
  --success: #1B8A4C;
  --danger: #C62828;
  --warning: #E6A000;
  --info: #1565C0;
}

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

html, body {
  font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: var(--gray-100);
  color: var(--gray-800);
  line-height: 1.5;
  min-height: 100vh;
}

/* Login */
.login-wrap {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh; background: var(--navy);
}
.login-card {
  background: var(--white); border-radius: 12px;
  padding: 2.5rem; width: 100%; max-width: 420px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.35);
}
.login-card h1 {
  color: var(--navy); font-size: 1.6rem; margin-bottom: 0.25rem;
}
.login-card .sub {
  color: var(--gray-600); font-size: 0.9rem; margin-bottom: 1.5rem;
}
.login-card label {
  display: block; font-size: 0.85rem; font-weight: 600; color: var(--gray-600); margin-bottom: 0.35rem;
}
.login-card input {
  width: 100%; padding: 0.75rem 1rem; border: 1px solid var(--gray-200);
  border-radius: 8px; font-size: 1rem; margin-bottom: 1rem;
}
.login-card input:focus {
  outline: none; border-color: var(--orange); box-shadow: 0 0 0 3px rgba(232,117,26,0.15);
}
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 0.5rem; border: none; border-radius: 8px; padding: 0.7rem 1.2rem;
  font-size: 1rem; font-weight: 600; cursor: pointer; transition: transform .1s, opacity .15s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--orange); color: var(--white); }
.btn-primary:hover { background: var(--orange-dark); }
.btn-navy { background: var(--navy); color: var(--white); }
.btn-navy:hover { background: var(--navy-light); }
.btn-danger { background: var(--danger); color: var(--white); }
.btn-success { background: var(--success); color: var(--white); }
.btn-sm { padding: 0.45rem 0.8rem; font-size: 0.9rem; }
.btn-block { width: 100%; }

/* App shell */
.app-shell { display: none; }
.app-shell.active { display: block; }

.topbar {
  background: var(--navy); color: var(--white);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.75rem 1rem; position: sticky; top: 0; z-index: 100;
}
.topbar .brand { font-weight: 700; font-size: 1.1rem; }
.topbar .user { font-size: 0.85rem; opacity: 0.9; }
.topbar .actions { display: flex; gap: 0.5rem; }
.topbar button { background: rgba(255,255,255,0.12); color: #fff; border: none; border-radius: 6px; padding: 0.4rem 0.7rem; cursor: pointer; font-size: 0.85rem; }
.topbar button:hover { background: rgba(255,255,255,0.22); }

.container { max-width: 1200px; margin: 0 auto; padding: 1rem; }

/* Cards */
.card {
  background: var(--white); border-radius: 10px; padding: 1rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06); margin-bottom: 1rem;
}
.card h2 { font-size: 1.1rem; color: var(--navy); margin-bottom: 0.75rem; }
.card h3 { font-size: 1rem; color: var(--navy-light); margin-bottom: 0.5rem; }

/* Stats grid */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 1rem; }
.stat {
  background: var(--white); border-radius: 10px; padding: 1rem; text-align: center;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}
.stat .number { font-size: 1.8rem; font-weight: 700; color: var(--navy); }
.stat .label { font-size: 0.8rem; color: var(--gray-600); text-transform: uppercase; letter-spacing: 0.03em; }

/* Equipment list */
.eq-list { display: grid; gap: 0.75rem; }
.eq-item {
  background: var(--white); border-radius: 10px; padding: 1rem;
  display: flex; align-items: center; justify-content: space-between;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06); cursor: pointer;
  border-left: 5px solid var(--gray-200);
}
.eq-item:hover { background: var(--gray-100); }
.eq-item.done { border-left-color: var(--success); }
.eq-item.overdue { border-left-color: var(--danger); }
.eq-item .name { font-weight: 700; color: var(--navy); }
.eq-item .meta { font-size: 0.85rem; color: var(--gray-600); }
.badge {
  display: inline-block; padding: 0.25rem 0.6rem; border-radius: 999px;
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
}
.badge-green { background: #D4EDDA; color: #155724; }
.badge-red { background: #F8D7DA; color: #721C24; }
.badge-orange { background: #FFF3CD; color: #856404; }

/* Forms */
.form-grid { display: grid; grid-template-columns: 1fr; gap: 1rem; }
@media (min-width: 768px) {
  .form-grid { grid-template-columns: 1fr 1fr; }
}
.form-group { display: flex; flex-direction: column; gap: 0.35rem; }
.form-group label { font-size: 0.85rem; font-weight: 600; color: var(--gray-600); }
.form-group select, .form-group input, .form-group textarea {
  padding: 0.7rem 0.8rem; border: 1px solid var(--gray-200); border-radius: 8px; font-size: 1rem; background: #fff;
}
.form-group select { min-height: 2.8rem; }
.form-group textarea { min-height: 80px; resize: vertical; }
.form-group select:focus, .form-group input:focus, .form-group textarea:focus {
  outline: none; border-color: var(--orange); box-shadow: 0 0 0 3px rgba(232,117,26,0.12);
}

.remarks-box { display: none; }
.remarks-box.show { display: block; }

/* Tables */
table { width: 100%; border-collapse: collapse; background: var(--white); border-radius: 8px; overflow: hidden; }
th, td { padding: 0.7rem 0.8rem; text-align: left; font-size: 0.9rem; }
th { background: var(--navy-light); color: var(--white); font-weight: 600; }
tr:nth-child(even) { background: var(--gray-100); }

/* Compartments */
.compartment { border: 1px solid var(--gray-200); border-radius: 10px; padding: 1rem; margin-bottom: 1rem; }
.compartment h4 { color: var(--navy); margin-bottom: 0.5rem; }
.rejection-alert {
  background: var(--danger); color: #fff; padding: 0.75rem 1rem; border-radius: 8px; margin: 1rem 0; display: none;
}
.rejection-alert.show { display: block; }

/* QR code placeholder */
.qr-placeholder {
  width: 120px; height: 120px; background: #fff; border: 2px dashed var(--gray-400);
  display: flex; align-items: center; justify-content: center; font-size: 0.7rem; color: var(--gray-600);
  border-radius: 8px;
}

/* Print styles for audit view */
@media print {
  .topbar, .no-print { display: none !important; }
  .app-shell { display: block !important; }
  body { background: #fff; }
  .card { box-shadow: none; border: 1px solid #ddd; page-break-inside: avoid; }
}

/* Mobile */
@media (max-width: 640px) {
  .container { padding: 0.75rem; }
  .login-card { padding: 1.5rem; margin: 1rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .eq-item { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
}

/* Tabs / nav */
.nav-tabs { display: flex; gap: 0.5rem; margin-bottom: 1rem; flex-wrap: wrap; }
.nav-tab {
  padding: 0.5rem 0.9rem; border-radius: 8px; border: 1px solid var(--gray-200);
  background: var(--white); cursor: pointer; font-weight: 600; color: var(--gray-600);
}
.nav-tab.active { background: var(--navy); color: var(--white); border-color: var(--navy); }

/* Hidden */
.hidden { display: none !important; }

/* Signature */
.signature-line {
  border-top: 1px solid var(--gray-800); margin-top: 2rem; padding-top: 0.5rem;
  font-size: 0.85rem; color: var(--gray-600);
}