/* Signal Sortie — Sky & Drone Theme */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --sky-50:  #f0f9ff;
  --sky-100: #e0f2fe;
  --sky-200: #bae6fd;
  --sky-400: #38bdf8;
  --sky-500: #0ea5e9;
  --sky-600: #0284c7;
  --sky-700: #0369a1;
  --sky-900: #0c4a6e;
  --slate-50:  #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-400: #94a3b8;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --green-500: #22c55e;
  --red-500:   #ef4444;
  --amber-400: #fbbf24;
  --white: #ffffff;
}

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

body {
  font-family: 'Inter', sans-serif;
  background: linear-gradient(160deg, var(--sky-50) 0%, var(--slate-100) 100%);
  min-height: 100vh;
  color: var(--slate-700);
}

/* ── Nav ── */
.nav {
  background: linear-gradient(90deg, var(--sky-700) 0%, var(--sky-600) 100%);
  color: var(--white);
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  box-shadow: 0 2px 8px rgba(3,105,161,0.18);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--white);
}
.nav-brand svg { width: 26px; height: 26px; }
.nav-links { display: flex; gap: 0.25rem; align-items: center; }
.nav-link {
  color: var(--sky-100);
  text-decoration: none;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background 0.15s;
}
.nav-link:hover, .nav-link.active { background: rgba(255,255,255,0.15); color: var(--white); }

/* ── Layout ── */
.page { max-width: 1100px; margin: 0 auto; padding: 2rem 1.25rem; }
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.75rem;
}
.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--sky-900);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ── Cards ── */
.card {
  background: var(--white);
  border-radius: 12px;
  box-shadow: 0 1px 4px rgba(14,165,233,0.08), 0 4px 16px rgba(14,165,233,0.06);
  padding: 1.5rem;
  border: 1px solid var(--sky-100);
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}
.stat-card {
  background: linear-gradient(135deg, var(--sky-600), var(--sky-500));
  color: var(--white);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.stat-card .stat-value { font-size: 2rem; font-weight: 700; }
.stat-card .stat-label { font-size: 0.8rem; opacity: 0.85; text-transform: uppercase; letter-spacing: 0.05em; }

/* ── Tables ── */
.table-wrap { overflow-x: auto; border-radius: 10px; border: 1px solid var(--sky-100); }
table { width: 100%; border-collapse: collapse; background: var(--white); }
thead { background: linear-gradient(90deg, var(--sky-700), var(--sky-600)); color: var(--white); }
th { padding: 0.75rem 1rem; text-align: left; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; }
td { padding: 0.75rem 1rem; border-bottom: 1px solid var(--slate-100); font-size: 0.9rem; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--sky-50); }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1.1rem;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: filter 0.15s, transform 0.1s;
}
.btn:hover { filter: brightness(1.08); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--sky-600); color: var(--white); }
.btn-secondary { background: var(--slate-200); color: var(--slate-700); }
.btn-danger { background: var(--red-500); color: var(--white); }
.btn-sm { padding: 0.3rem 0.7rem; font-size: 0.8rem; }
.btn-ghost { background: transparent; color: var(--sky-600); border: 1.5px solid var(--sky-200); }

/* ── Forms ── */
.form-group { display: flex; flex-direction: column; gap: 0.35rem; margin-bottom: 1.1rem; }
label { font-size: 0.85rem; font-weight: 600; color: var(--slate-600); }
input, select, textarea {
  padding: 0.55rem 0.85rem;
  border: 1.5px solid var(--slate-200);
  border-radius: 8px;
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--slate-800);
  background: var(--white);
  transition: border-color 0.15s, box-shadow 0.15s;
  width: 100%;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--sky-400);
  box-shadow: 0 0 0 3px rgba(56,189,248,0.15);
}
textarea { resize: vertical; min-height: 80px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 1.25rem; }
.form-grid .full { grid-column: 1 / -1; }
.form-help { font-size: 0.85rem; color: var(--slate-400); }
.crew-assignment {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.crew-assignment select {
  min-height: 9.5rem;
}

/* ── Alerts ── */
.alert {
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-size: 0.875rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.alert-error { background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; }
.alert-success { background: #f0fdf4; color: #15803d; border: 1px solid #bbf7d0; }
.alert-warning { background: #fffbeb; color: #92400e; border: 1px solid #fde68a; }

/* ── Badges ── */
.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.badge-active { background: #dcfce7; color: #15803d; }
.badge-maintenance { background: #fef9c3; color: #854d0e; }
.badge-retired { background: #f1f5f9; color: #64748b; }
.badge-pass { background: #dcfce7; color: #15803d; }
.badge-fail { background: #fee2e2; color: #b91c1c; }

/* ── Checklist ── */
.checklist-section { margin-bottom: 1.5rem; }
.checklist-section h3 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--sky-700);
  margin-bottom: 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--sky-100);
}
.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 0.75rem;
  border-radius: 8px;
  margin-bottom: 0.5rem;
  background: var(--slate-50);
  border: 1px solid var(--slate-100);
}
.checklist-item label { font-size: 0.9rem; font-weight: 500; color: var(--slate-700); cursor: pointer; }
.checklist-toggle { display: flex; gap: 0.5rem; }
.toggle-btn {
  padding: 0.25rem 0.75rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: all 0.15s;
}
.toggle-pass { background: #dcfce7; color: #15803d; border-color: #86efac; }
.toggle-fail { background: #fee2e2; color: #b91c1c; border-color: #fca5a5; }
.toggle-btn.selected { box-shadow: 0 0 0 2px currentColor; }

/* ── Signature canvas ── */
.sig-canvas {
  border: 2px dashed var(--sky-300);
  border-radius: 10px;
  background: var(--white);
  cursor: crosshair;
  touch-action: none;
  width: 100%;
  height: 160px;
  display: block;
}
.sig-actions { display: flex; gap: 0.5rem; margin-top: 0.5rem; }

/* ── Map ── */
#site-map { height: 340px; border-radius: 10px; border: 1.5px solid var(--sky-200); }

/* ── Horizon header accent ── */
.horizon-bar {
  height: 4px;
  background: linear-gradient(90deg, var(--sky-400), var(--sky-200), var(--sky-400));
  border-radius: 2px;
  margin-bottom: 1.5rem;
}

/* ── Auth pages ── */
.auth-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, var(--sky-700) 0%, var(--sky-500) 60%, var(--sky-200) 100%);
}
.auth-card {
  background: var(--white);
  border-radius: 16px;
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 8px 40px rgba(3,105,161,0.18);
}
.auth-logo {
  text-align: center;
  margin-bottom: 1.5rem;
}
.auth-logo svg { width: 48px; height: 48px; color: var(--sky-600); }
.auth-logo h1 { font-size: 1.5rem; font-weight: 800; color: var(--sky-900); margin-top: 0.5rem; }
.auth-logo p { font-size: 0.85rem; color: var(--slate-400); }

/* ── Photo preview ── */
.photo-preview { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-top: 0.5rem; }
.photo-thumb { width: 80px; height: 80px; object-fit: cover; border-radius: 8px; border: 2px solid var(--sky-200); }

/* ── Responsive ── */
@media (max-width: 640px) {
  .form-grid { grid-template-columns: 1fr; }
  .nav-links .nav-link span { display: none; }
  .page { padding: 1rem 0.75rem; }
}