:root {
  --navy-950: #061325;
  --navy-900: #0b2545;
  --navy-800: #123a6b;
  --navy-700: #1a4d8f;
  --sky-500: #2ea3f2;
  --sky-400: #4fc3f7;
  --sky-100: #e6f6ff;
  --amber-500: #e8a33d;
  --green-600: #1f9d55;
  --red-500: #d9534f;
  --gray-50: #f7f9fb;
  --gray-100: #eef1f5;
  --gray-200: #dde3ea;
  --gray-400: #9aa7b5;
  --gray-600: #5b6b7c;
  --gray-800: #263544;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(11, 37, 69, 0.08), 0 1px 2px rgba(11, 37, 69, 0.06);
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--gray-800);
  background: var(--gray-50);
}

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

/* ---------- Sidebar ---------- */
.sidebar {
  width: 250px;
  flex-shrink: 0;
  background: linear-gradient(180deg, var(--navy-950), var(--navy-900));
  color: #fff;
  display: flex;
  flex-direction: column;
  padding: 20px 14px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 8px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 14px;
}

.brand-mark { width: 34px; height: 34px; border-radius: 50%; object-fit: cover; flex-shrink: 0; }
.brand-title { font-weight: 700; font-size: 15px; letter-spacing: 0.2px; }
.brand-sub { font-size: 12px; color: var(--sky-400); }

.user-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 0 8px 16px;
  margin-bottom: 8px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.user-name { font-size: 13px; font-weight: 600; color: #fff; }
.user-role { font-size: 11.5px; color: var(--sky-400); margin-top: 1px; }

#login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, var(--navy-950), var(--navy-900));
  padding: 20px;
}
.login-card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px 32px 28px;
  width: 100%;
  max-width: 360px;
}
.login-card .brand-mark, .brand-mark-login { width: 44px; height: 44px; }
.login-sub { font-size: 13px; color: var(--gray-600); margin: 0 0 18px; }
.login-error {
  background: #fbe9e9;
  color: var(--red-500);
  font-size: 12.5px;
  padding: 9px 12px;
  border-radius: 8px;
  margin-top: 14px;
}

.nav { display: flex; flex-direction: column; gap: 2px; flex: 1; }
.nav-section {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-400);
  padding: 12px 10px 6px;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 8px;
  color: #dbe6f2;
  text-decoration: none;
  font-size: 13.5px;
}
.nav-link:hover { background: rgba(255,255,255,0.06); }
.nav-link.active { background: var(--sky-500); color: #fff; font-weight: 600; }
.nav-icon { width: 18px; text-align: center; }

.sidebar-footer { margin-top: auto; padding-top: 14px; border-top: 1px solid rgba(255,255,255,0.1); }
.btn-ghost-small {
  width: 100%;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.2);
  color: var(--gray-400);
  padding: 8px;
  border-radius: 7px;
  font-size: 12px;
  cursor: pointer;
}
.btn-ghost-small:hover { color: #fff; border-color: rgba(255,255,255,0.4); }
.sidebar-note { font-size: 10.5px; color: rgba(255,255,255,0.3); text-align: center; margin-top: 10px; }

/* ---------- Main ---------- */
.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 28px;
  background: #fff;
  border-bottom: 1px solid var(--gray-200);
}
.topbar h1 { font-size: 19px; margin: 0; }
.role-badge {
  font-size: 12px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--sky-100);
  color: var(--navy-800);
}

.view-root { padding: 24px 28px 60px; max-width: 1180px; }

/* ---------- Generic components ---------- */
.grid { display: grid; gap: 16px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: 1.4fr 1fr; }
@media (max-width: 900px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-2 { grid-template-columns: 1fr; }
}

.card {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 20px;
}

.card-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-600);
  margin: 0 0 4px;
}

.stat-value { font-size: 26px; font-weight: 700; color: var(--navy-900); }
.stat-sub { font-size: 12px; color: var(--gray-600); margin-top: 2px; }

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 28px 0 12px;
}
.section-heading h2 { font-size: 15px; margin: 0; }
.section-heading:first-child { margin-top: 0; }

table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
thead th {
  text-align: left;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--gray-600);
  padding: 8px 12px;
  border-bottom: 1px solid var(--gray-200);
}
tbody td { padding: 11px 12px; border-bottom: 1px solid var(--gray-100); vertical-align: top; }
tbody tr:hover { background: var(--gray-50); }
.table-card { background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.table-wrap { overflow-x: auto; }

.badge { display: inline-block; font-size: 11px; font-weight: 600; padding: 3px 9px; border-radius: 999px; }
.badge-open { background: #fdf1de; color: #96650f; }
.badge-matched { background: var(--sky-100); color: var(--navy-800); }
.badge-completed { background: #e5f6ec; color: var(--green-600); }
.badge-cancelled { background: #fbe9e9; color: var(--red-500); }
.badge-available { background: #e5f6ec; color: var(--green-600); }
.badge-unavailable { background: var(--gray-100); color: var(--gray-600); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--sky-500);
  color: #fff;
  border: none;
  padding: 9px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { background: var(--sky-500); filter: brightness(1.05); }
.btn-secondary { background: #fff; color: var(--navy-800); border: 1px solid var(--gray-200); }
.btn-secondary:hover { background: var(--gray-50); }
.btn-small { padding: 6px 11px; font-size: 12px; }
.btn-danger { background: #fff; color: var(--red-500); border: 1px solid #f2c6c4; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.muted { color: var(--gray-400); font-size: 13px; line-height: 1.55; }

.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 16px; }
.toolbar .spacer { flex: 1; }
.input, select.input {
  padding: 9px 12px;
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  font-size: 13.5px;
  background: #fff;
  color: var(--gray-800);
}
.input:focus, select.input:focus { outline: 2px solid var(--sky-400); outline-offset: 0; border-color: var(--sky-400); }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 18px; }
@media (max-width: 700px) { .form-grid { grid-template-columns: 1fr; } }
.form-field { display: flex; flex-direction: column; gap: 6px; }
.form-field label { font-size: 12.5px; font-weight: 600; color: var(--gray-600); }
.form-field.span-2 { grid-column: span 2; }
@media (max-width: 700px) { .form-field.span-2 { grid-column: span 1; } }

.aircraft-row {
  display: grid;
  grid-template-columns: 1.4fr 1fr 0.8fr 0.8fr 0.8fr 0.8fr auto;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
}
@media (max-width: 900px) { .aircraft-row { grid-template-columns: 1fr 1fr; } }

.empty-state { text-align: center; padding: 40px 20px; color: var(--gray-600); }
.empty-state-icon { font-size: 30px; margin-bottom: 8px; }

.pilot-card { display: flex; justify-content: space-between; gap: 16px; }
.pilot-name { font-weight: 700; font-size: 15px; color: var(--navy-900); }
.pilot-meta { font-size: 12.5px; color: var(--gray-600); margin-top: 2px; }
.chip { display: inline-block; background: var(--gray-100); color: var(--gray-800); font-size: 11px; padding: 3px 9px; border-radius: 999px; margin: 2px 4px 0 0; }
.chip-sky { background: var(--sky-100); color: var(--navy-800); }

.match-pilot-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  margin-bottom: 10px;
  background: #fff;
}
.match-pilot-row.best { border-color: var(--sky-400); box-shadow: 0 0 0 3px var(--sky-100); }
.fit-tag { font-size: 11px; font-weight: 700; color: var(--sky-500); text-transform: uppercase; letter-spacing: 0.04em; }

.banner {
  padding: 12px 16px;
  border-radius: 8px;
  background: var(--sky-100);
  color: var(--navy-800);
  font-size: 13px;
  margin-bottom: 18px;
}
.banner-warn { background: #fdf1de; color: #7a5109; }

.detail-back { font-size: 12.5px; color: var(--gray-600); text-decoration: none; margin-bottom: 14px; display: inline-block; }
.detail-back:hover { color: var(--navy-800); }

.kv { display: grid; grid-template-columns: 140px 1fr; gap: 8px 12px; font-size: 13.5px; }
.kv dt { color: var(--gray-600); }
.kv dd { margin: 0; }

.report-header { text-align: center; margin-bottom: 24px; }
.report-header h2 { margin: 0 0 4px; color: var(--navy-900); }
.report-header p { margin: 0; color: var(--gray-600); font-size: 13px; }
.rank-medal { font-size: 16px; margin-right: 4px; }

@media print {
  .sidebar, .topbar, .toolbar, .btn { display: none !important; }
  .view-root { padding: 0; max-width: none; }
}