/* ============================================
   Timmy Device Manager - Shared Styles
   ============================================ */

:root {
  --primary: #0d6efd;
  --primary-hover: #0b5ed7;
  --accent: #7c3aed;
  --accent-hover: #6d28d9;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --muted: #6b7280;
  --bg: #ffffff;
  --card: #f8fafc;
  --border: #e5e7eb;
  --text: #111827;
  --text-light: #374151;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  font-size: 13px;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

/* ============================================
   Static Header / Navigation
   ============================================ */

.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 10px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.app-header h1 {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}

.app-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

.app-nav a,
.app-nav button {
  padding: 6px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text-light);
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.15s;
}

.app-nav a:hover,
.app-nav button:hover {
  background: #f3f4f6;
  border-color: #d1d5db;
}

.app-nav a.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.app-nav .nav-logout {
  background: #fef2f2;
  color: var(--danger);
  border-color: #fecaca;
}

.app-nav .nav-logout:hover {
  background: #fee2e2;
}

.app-nav .nav-back {
  background: #f3f4f6;
  color: var(--muted);
}

/* ============================================
   Layout
   ============================================ */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 20px;
}

.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 12px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.03);
}

.card-title {
  font-weight: 700;
  font-size: 14px;
  margin: 0 0 10px;
}

.row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.col {
  flex: 1;
  min-width: 180px;
}

/* ============================================
   Compact Form Elements
   ============================================ */

label {
  font-weight: 600;
  display: block;
  margin-bottom: 4px;
  font-size: 12px;
  color: var(--text-light);
}

input,
select,
textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13px;
  outline: none;
  transition: border-color 0.15s;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--primary);
}

input[type="checkbox"] {
  width: auto;
  margin-right: 6px;
}

/* ============================================
   Compact Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 12px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  font-weight: 600;
  font-size: 12px;
  text-decoration: none;
  transition: all 0.15s;
  gap: 4px;
}

.btn-primary {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-accent {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.btn-accent:hover {
  background: var(--accent-hover);
}

.btn-outline {
  background: white;
  color: var(--primary);
  border-color: var(--primary);
}

.btn-outline:hover {
  background: #eff6ff;
}

.btn-danger {
  background: white;
  color: var(--danger);
  border-color: var(--danger);
}

.btn-danger:hover {
  background: #fef2f2;
}

.btn-sm {
  padding: 4px 8px;
  font-size: 11px;
}

/* ============================================
   Compact Tables with Zebra Striping
   ============================================ */

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

th,
td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

th {
  background: #f3f4f6;
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  color: var(--muted);
}

/* Zebra Striping */
tbody tr:nth-child(even) {
  background: #f9fafb;
}

tbody tr:hover {
  background: #f3f4f6;
}

/* ============================================
   Stats Cards
   ============================================ */

.stat {
  padding: 12px;
  border-radius: 10px;
  background: var(--card);
  border: 1px solid var(--border);
  text-align: center;
}

.stat .label {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
}

.stat .value {
  font-size: 24px;
  font-weight: 700;
  margin-top: 4px;
}

/* ============================================
   Badges
   ============================================ */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  gap: 4px;
}

.b-success, .b-online { background: #ecfdf5; color: #065f46; }
.b-failed, .b-offline { background: #fef2f2; color: #991b1b; }
.b-pending { background: #eff6ff; color: #1d4ed8; }
.b-warning { background: #fffbeb; color: #92400e; }
.b-muted { background: #f3f4f6; color: #6b7280; }

/* Status Dot */
.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  display: inline-block;
}

.dot-online { background: var(--success); animation: pulse 2s infinite; }
.dot-offline { background: var(--danger); }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ============================================
   Modals
   ============================================ */

.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: #fff;
  border-radius: 12px;
  max-width: 600px;
  width: 94%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 16px;
  border: 1px solid var(--border);
  box-shadow: 0 10px 40px rgba(0,0,0,0.15);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.modal-title {
  font-weight: 700;
  font-size: 16px;
}

/* ============================================
   Utilities
   ============================================ */

.muted { color: var(--muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 12px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 12px; }
.flex { display: flex; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 12px; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }

/* ============================================
   Pagination
   ============================================ */

.pager {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  align-items: center;
  margin-top: 10px;
}

.pager .page-info {
  font-size: 12px;
  color: var(--muted);
}

/* ============================================
   Empty State
   ============================================ */

.empty-state {
  text-align: center;
  padding: 30px 20px;
  color: var(--muted);
}

.empty-state svg {
  width: 48px;
  height: 48px;
  margin-bottom: 12px;
  opacity: 0.4;
}

/* ============================================
   Form Actions
   ============================================ */

.form-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 12px;
}

.form-group {
  margin-bottom: 10px;
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 768px) {
  .app-header {
    flex-direction: column;
    align-items: stretch;
  }
  
  .app-nav {
    justify-content: center;
  }
  
  .col {
    min-width: 100%;
  }
  
  .stat .value {
    font-size: 20px;
  }
}