:root {
  --primary: #1e40af;
  --primary-dark: #1e3a8a;
  --secondary: #0891b2;
  --success: #059669;
  --danger: #dc2626;
  --warning: #d97706;
  --bg: #f1f5f9;
  --card-bg: #ffffff;
  --border: #e2e8f0;
  --text: #0f172a;
  --text-soft: #64748b;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}
header {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  padding: 18px 28px;
  box-shadow: var(--shadow);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
header h1 { font-size: 1.4rem; font-weight: 600; }
header p { font-size: .85rem; opacity: .9; margin-top: 2px; }
.user-box { display: flex; align-items: center; gap: 12px; font-size: .9rem; }
.user-box .btn-outline { color: white; border-color: rgba(255,255,255,.4); }
.user-box .btn-outline:hover { background: rgba(255,255,255,.1); }
nav {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  display: flex;
  padding: 0 28px;
  overflow-x: auto;
}
nav button, nav a.tab-btn {
  background: none; border: none;
  padding: 14px 20px;
  font-size: .95rem; font-weight: 500;
  color: var(--text-soft);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: all .15s;
  white-space: nowrap;
  font-family: inherit;
  display: inline-block;
}
nav button:hover, nav a.tab-btn:hover { color: var(--primary); }
nav button.active, nav a.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }
main { padding: 24px 28px; max-width: 1400px; margin: 0 auto; }
.view { display: none; }
.view.active { display: block; }
h2 { font-size: 1.25rem; margin-bottom: 18px; font-weight: 600; }
h3 { font-size: 1.05rem; margin: 18px 0 12px; font-weight: 600; }

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--card-bg);
  padding: 18px;
  border-radius: 10px;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--primary);
}
.stat-card .label { color: var(--text-soft); font-size: .78rem; text-transform: uppercase; letter-spacing: .5px; }
.stat-card .value { font-size: 1.85rem; font-weight: 700; margin-top: 6px; color: var(--text); }
.stat-card.success { border-left-color: var(--success); }
.stat-card.warning { border-left-color: var(--warning); }
.stat-card.secondary { border-left-color: var(--secondary); }

.card {
  background: var(--card-bg);
  padding: 22px;
  border-radius: 10px;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
@media (max-width: 768px) { .grid-2 { grid-template-columns: 1fr; } }

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 12px;
}
label {
  display: block;
  font-size: .82rem;
  color: var(--text-soft);
  margin-bottom: 4px;
  font-weight: 500;
}
input, select, textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: .92rem;
  font-family: inherit;
  background: white;
  transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(30,64,175,.12);
}

.btn {
  padding: 9px 18px;
  border: none;
  border-radius: 6px;
  font-size: .9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all .15s;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--success); color: white; }
.btn-success:hover { background: #047857; }
.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: #b91c1c; }
.btn-warning { background: var(--warning); color: white; }
.btn-secondary { background: var(--secondary); color: white; }
.btn-secondary:hover { background: #0e7490; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { background: var(--bg); }
.btn-sm { padding: 5px 10px; font-size: .8rem; }

table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th {
  background: var(--bg);
  padding: 10px 12px;
  text-align: left;
  font-weight: 600;
  color: var(--text-soft);
  font-size: .76rem;
  text-transform: uppercase;
  letter-spacing: .3px;
  border-bottom: 1px solid var(--border);
}
td { padding: 11px 12px; border-bottom: 1px solid var(--border); }
tr:hover td { background: #fafbfc; }
.table-wrap { overflow-x: auto; }

.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 12px;
  font-size: .75rem;
  font-weight: 500;
}
.badge-in { background: #d1fae5; color: #065f46; }
.badge-out { background: #fee2e2; color: #991b1b; }
.badge-late { background: #fef3c7; color: #92400e; }
.badge-visitor { background: #e0f2fe; color: #075985; }
.badge-staff { background: #ede9fe; color: #5b21b6; }
.badge-success { background: #d1fae5; color: #065f46; }
.badge-danger  { background: #fee2e2; color: #991b1b; }
.badge-info    { background: #dbeafe; color: #1e40af; }
.badge-no-salida { background: #fef9c3; color: #854d0e; border: 1px solid #fde047; margin-left: 4px; }

/* Buscador de empleados en Entrada/Salida */
.emp-dropdown {
  display: none;
  position: absolute;
  top: 100%; left: 0; right: 0;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: 0 4px 16px rgba(0,0,0,.12);
  max-height: 260px;
  overflow-y: auto;
  z-index: 200;
}
.emp-dropdown.open { display: block; }
.emp-option {
  padding: 9px 14px;
  cursor: pointer;
  font-size: .92rem;
  border-bottom: 1px solid #f3f4f6;
}
.emp-option:last-child { border-bottom: none; }
.emp-option:hover, .emp-option.active { background: #eff6ff; }
.emp-option .emp-code { color: var(--text-soft); font-size: .8rem; margin-left: 6px; }
.emp-option .emp-dept { color: var(--text-soft); font-size: .8rem; display: block; }

/* Historial sub-tabs */
.subtabs {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
  border-bottom: 2px solid var(--border);
  padding-bottom: 0;
}
.subtab-btn {
  padding: 8px 20px;
  border: none;
  background: transparent;
  color: var(--text-soft);
  font-size: .95rem;
  font-weight: 500;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  border-radius: 4px 4px 0 0;
  transition: color .15s, border-color .15s;
}
.subtab-btn:hover { color: var(--primary); }
.subtab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }

.toolbar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: flex-end;
  margin-bottom: 16px;
}
.toolbar .spacer { flex: 1; }
.empty { text-align: center; padding: 40px 20px; color: var(--text-soft); }

.toast {
  position: fixed;
  bottom: 24px; right: 24px;
  background: var(--text);
  color: white;
  padding: 12px 18px;
  border-radius: 8px;
  font-size: .9rem;
  box-shadow: 0 10px 25px rgba(0,0,0,.2);
  opacity: 0;
  transform: translateY(20px);
  transition: all .3s;
  z-index: 1000;
  max-width: 340px;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }

@media print {
  header, nav, .toolbar, .no-print { display: none !important; }
  .card { box-shadow: none; border: 1px solid var(--border); }
  body { background: white; }
}