/* ============================================================ */
/* Boia MQTT Web Portal - Styles                                */
/* ============================================================ */

:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: #1a1f2e;
  --bg-input: #0d1117;
  --border: #2d3748;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --cyan: #06b6d4;
}

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

body {
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
}

/* ===== NAVBAR ===== */

.navbar {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--cyan);
}

.navbar-brand span { font-size: 24px; }

.navbar-user {
  display: flex;
  align-items: center;
  gap: 12px;
}

.navbar-user .username {
  color: var(--text-secondary);
  font-size: 14px;
}

.navbar-user .role-badge {
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 600;
  text-transform: uppercase;
}

.role-badge.admin { background: var(--danger); color: #fff; }
.role-badge.user { background: var(--accent); color: #fff; }

/* ===== LAYOUT ===== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}

.page { display: none; }
.page.active { display: block; }

/* ===== AUTH PAGE ===== */

.auth-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 56px);
}

.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px;
  width: 100%;
  max-width: 420px;
}

.auth-card h1 {
  text-align: center;
  margin-bottom: 8px;
  font-size: 24px;
}

.auth-card .subtitle {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 28px;
  font-size: 14px;
}

.auth-card .logo {
  text-align: center;
  font-size: 48px;
  margin-bottom: 16px;
}

/* ===== FORMS ===== */

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 6px;
  font-weight: 500;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--accent);
}

.form-group input::placeholder {
  color: var(--text-muted);
}

/* ===== BUTTONS ===== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  width: 100%;
}

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

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #16a34a; }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #dc2626; }

.btn-warning { background: #f59e0b; color: #fff; }
.btn-warning:hover { background: #d97706; }
.btn-warning:disabled { background: #9ca3af; cursor: not-allowed; }

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.btn-icon {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  font-size: 16px;
  transition: color 0.2s;
}

.btn-icon:hover { color: var(--text-primary); }
.btn-icon.danger:hover { color: var(--danger); }

/* ===== TABS ===== */

.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}

.tab {
  padding: 10px 20px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}

.tab:hover { color: var(--text-primary); }

.tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ===== CARDS ===== */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
}

.stat-card .label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.stat-card .value {
  font-size: 28px;
  font-weight: 700;
}

.stat-card .value.online { color: var(--success); }
.stat-card .value.offline { color: var(--danger); }
.stat-card .value.cyan { color: var(--cyan); }
.stat-card .value.warning { color: var(--warning); }

/* ===== TABLE ===== */

.table-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.table-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.table-header h3 {
  font-size: 16px;
  font-weight: 600;
}

table {
  width: 100%;
  border-collapse: collapse;
}

thead th {
  background: var(--bg-secondary);
  padding: 10px 16px;
  text-align: left;
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

tbody td {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  font-size: 14px;
}

tbody tr:hover {
  background: rgba(59, 130, 246, 0.05);
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
}

.badge-success { background: rgba(34, 197, 94, 0.15); color: var(--success); }
.badge-danger { background: rgba(239, 68, 68, 0.15); color: var(--danger); }
.badge-info { background: rgba(6, 182, 212, 0.15); color: var(--cyan); }
.badge-warning { background: rgba(245, 158, 11, 0.15); color: var(--warning); }
.badge-admin { background: rgba(239, 68, 68, 0.15); color: var(--danger); }

/* ===== MODAL ===== */

.modal-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 200;
  align-items: center;
  justify-content: center;
}

.modal-overlay.active {
  display: flex;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  width: 100%;
  max-width: 480px;
}

.modal h2 {
  margin-bottom: 20px;
  font-size: 18px;
}

.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 20px;
  justify-content: flex-end;
}

/* ===== AUTH TOGGLE ===== */

.auth-toggle {
  text-align: center;
  margin-top: 20px;
  font-size: 14px;
  color: var(--text-muted);
}

.auth-toggle a {
  color: var(--accent);
  text-decoration: none;
  cursor: pointer;
  font-weight: 500;
}

.auth-toggle a:hover { text-decoration: underline; }

/* ===== ERROR / MESSAGE ===== */

.alert {
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 13px;
  margin-bottom: 16px;
}

.alert-error { background: rgba(239, 68, 68, 0.15); color: var(--danger); border: 1px solid rgba(239, 68, 68, 0.3); }
.alert-success { background: rgba(34, 197, 94, 0.15); color: var(--success); border: 1px solid rgba(34, 197, 94, 0.3); }

/* ===== STATUS DOT ===== */

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 6px;
}

.status-dot.online { background: var(--success); box-shadow: 0 0 6px var(--success); }
.status-dot.offline { background: var(--danger); }

/* ===== RESPONSIVE ===== */

@media (max-width: 768px) {
  .container { padding: 16px; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .auth-card { margin: 16px; padding: 24px; }
  .navbar { padding: 0 16px; }
  table { font-size: 13px; }
  thead th, tbody td { padding: 8px 10px; }
}

@media (max-width: 480px) {
  .grid { grid-template-columns: 1fr; }
}

/* ===== MONO ===== */

.mono { font-family: 'Cascadia Code', 'Fira Code', monospace; }

/* ===== EMPTY STATE ===== */

.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
}

.empty-state .icon { font-size: 48px; margin-bottom: 12px; }
.empty-state p { font-size: 14px; }