/* ============================================================
   admin-panel.css — Estilos del Panel de Administración
   NotepadSecure Sync Server
   ============================================================ */

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

/* ─── Variables de diseño ─────────────────────────────────── */
:root {
  --bg-primary:     #0f172a;
  --bg-secondary:   #1e293b;
  --bg-card:        rgba(30, 41, 59, 0.7);
  --bg-card-hover:  rgba(51, 65, 85, 0.7);
  --border:         rgba(148, 163, 184, 0.1);
  --border-focus:   rgba(99, 102, 241, 0.5);

  --text-primary:   #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted:     #64748b;

  --accent:         #6366f1;
  --accent-hover:   #818cf8;
  --accent-dim:     rgba(99, 102, 241, 0.15);

  --success:        #10b981;
  --success-dim:    rgba(16, 185, 129, 0.15);
  --danger:         #ef4444;
  --danger-dim:     rgba(239, 68, 68, 0.15);
  --warning:        #f59e0b;
  --warning-dim:    rgba(245, 158, 11, 0.15);

  --radius-sm:      6px;
  --radius:         10px;
  --radius-lg:      16px;

  --shadow:         0 4px 24px rgba(0,0,0,0.3);
  --shadow-lg:      0 8px 48px rgba(0,0,0,0.5);

  --font:           'Inter', system-ui, -apple-system, sans-serif;
  --transition:     0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Reset base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

/* ─── Layout principal ───────────────────────────────────── */
.app-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

/* ─── Sidebar ─────────────────────────────────────────────── */
.sidebar {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 0;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
}

.sidebar-logo {
  padding: 24px 20px 20px;
  border-bottom: 1px solid var(--border);
}
.sidebar-logo .logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--accent), #a78bfa);
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  margin-bottom: 8px;
}
.sidebar-logo h1 { font-size: 14px; font-weight: 600; color: var(--text-primary); }
.sidebar-logo p  { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

.sidebar-nav {
  flex: 1;
  padding: 12px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-section-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 12px 8px 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition);
  border: none;
  background: none;
  cursor: pointer;
  width: 100%;
  text-align: left;
}
.nav-item:hover { background: var(--accent-dim); color: var(--text-primary); }
.nav-item.active { background: var(--accent-dim); color: var(--accent-hover); }
.nav-item svg { width: 16px; height: 16px; flex-shrink: 0; }

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-muted);
}
.sidebar-footer a {
  color: var(--danger);
  text-decoration: none;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color var(--transition);
}
.sidebar-footer a:hover { color: #fca5a5; }

/* ─── Contenido principal ────────────────────────────────── */
.main-content {
  overflow-y: auto;
  padding: 32px;
}

.page-header {
  margin-bottom: 28px;
}
.page-header h2 { font-size: 24px; font-weight: 700; color: var(--text-primary); }
.page-header p  { font-size: 14px; color: var(--text-secondary); margin-top: 4px; }

/* ─── Cards ──────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  backdrop-filter: blur(12px);
}
.card-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ─── Stats grid ──────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  backdrop-filter: blur(12px);
}
.stat-card .stat-label { font-size: 12px; color: var(--text-muted); font-weight: 500; }
.stat-card .stat-value { font-size: 28px; font-weight: 700; color: var(--text-primary); margin: 4px 0; }
.stat-card .stat-sub   { font-size: 12px; color: var(--text-secondary); }

/* ─── Tablas ──────────────────────────────────────────────── */
.table-container { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
thead th {
  text-align: left;
  padding: 10px 16px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
}
tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}
tbody tr:hover { background: rgba(255,255,255,0.03); }
tbody td { padding: 14px 16px; color: var(--text-primary); }
tbody tr:last-child { border-bottom: none; }

/* ─── Badges de estado ────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.badge-success { background: var(--success-dim); color: var(--success); }
.badge-danger  { background: var(--danger-dim);  color: var(--danger); }
.badge-warning { background: var(--warning-dim); color: var(--warning); }
.badge-accent  { background: var(--accent-dim);  color: var(--accent-hover); }

/* ─── Botones ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(99,102,241,0.3); }

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--bg-card-hover); }

.btn-danger {
  background: var(--danger-dim);
  color: var(--danger);
  border: 1px solid rgba(239,68,68,0.2);
}
.btn-danger:hover { background: var(--danger); color: #fff; }

.btn-success {
  background: var(--success-dim);
  color: var(--success);
  border: 1px solid rgba(16,185,129,0.2);
}
.btn-success:hover { background: var(--success); color: #fff; }

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

/* ─── Formularios ─────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.form-control {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: var(--text-primary);
  font-size: 14px;
  font-family: var(--font);
  transition: border-color var(--transition);
  outline: none;
}
.form-control:focus { border-color: var(--border-focus); box-shadow: 0 0 0 3px var(--accent-dim); }
.form-control::placeholder { color: var(--text-muted); }

/* ─── Modales ─────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
  animation: fadeIn 0.15s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  width: 100%;
  max-width: 520px;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.modal-title { font-size: 18px; font-weight: 700; }
.modal-close {
  background: none; border: none;
  color: var(--text-muted); cursor: pointer;
  padding: 4px; border-radius: var(--radius-sm);
  transition: color var(--transition);
  font-size: 20px;
  line-height: 1;
}
.modal-close:hover { color: var(--text-primary); }

.modal-footer {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

/* ─── Token display ──────────────────────────────────────── */
.token-box {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  font-family: 'Courier New', monospace;
  font-size: 12px;
  color: var(--success);
  word-break: break-all;
  line-height: 1.5;
  position: relative;
}
.token-copy-btn {
  position: absolute;
  top: 8px; right: 8px;
  background: var(--accent-dim);
  border: none;
  color: var(--accent-hover);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  font-size: 11px;
  cursor: pointer;
  transition: all var(--transition);
}
.token-copy-btn:hover { background: var(--accent); color: #fff; }

/* ─── Alertas ─────────────────────────────────────────────── */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 16px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.alert-danger  { background: var(--danger-dim);  border: 1px solid rgba(239,68,68,0.2);  color: #fca5a5; }
.alert-success { background: var(--success-dim); border: 1px solid rgba(16,185,129,0.2); color: #6ee7b7; }
.alert-info    { background: var(--accent-dim);  border: 1px solid rgba(99,102,241,0.2);  color: var(--accent-hover); }

/* ─── Página de login ────────────────────────────────────── */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at 20% 50%, rgba(99,102,241,0.1) 0%, transparent 60%),
              radial-gradient(ellipse at 80% 50%, rgba(167,139,250,0.08) 0%, transparent 60%),
              var(--bg-primary);
}
.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  width: 100%;
  max-width: 400px;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg);
}
.login-logo {
  text-align: center;
  margin-bottom: 28px;
}
.login-logo .icon-wrap {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, var(--accent), #a78bfa);
  border-radius: var(--radius);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 12px;
  box-shadow: 0 4px 20px rgba(99,102,241,0.4);
}
.login-logo h1 { font-size: 22px; font-weight: 700; }
.login-logo p  { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* ─── Misc ────────────────────────────────────────────────── */
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.mt-1 { margin-top: 4px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }
.text-muted { color: var(--text-muted); font-size: 13px; }
.text-sm { font-size: 13px; }
.fw-600 { font-weight: 600; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.mono { font-family: 'Courier New', monospace; font-size: 12px; }

/* ─── Scrollbar ───────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ─── Responsive ──────────────────────────────────────────── */
@media (max-width: 768px) {
  .app-layout { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .main-content { padding: 20px 16px; }
  .grid-2 { grid-template-columns: 1fr; }
}