/* ═══════════════════════════════════════════
   Fixed Left Sidebar — All Pages
   ═══════════════════════════════════════════ */

#sidebar {
  position: fixed; left: 0; top: 0; bottom: 0; z-index: 100;
  width: var(--sidebar-w); flex-shrink: 0;
  background: rgba(18, 19, 30, 0.92);
  border-right: 1px solid var(--border-subtle);
  backdrop-filter: blur(20px);
  display: flex; flex-direction: column;
  padding: 28px 0; overflow-y: auto;
}

.sidebar-logo {
  display: flex; align-items: center; gap: 10px;
  padding: 0 24px; margin-bottom: 40px;
  text-decoration: none;
}
.sidebar-logo .logo-icon {
  width: 34px; height: 34px;
  background: linear-gradient(135deg, var(--accent), #7c3aed);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; color: #fff;
}
.sidebar-logo .logo-text {
  font-size: 1.1rem; font-weight: 700; color: var(--text-primary);
  letter-spacing: -0.01em;
}

.sidebar-nav { flex: 1; display: flex; flex-direction: column; gap: 4px; padding: 0 12px; }
.sidebar-nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; border-radius: var(--radius-sm);
  color: var(--text-secondary); text-decoration: none;
  font-size: 0.9rem; font-weight: 500;
  transition: all 0.2s var(--ease);
}
.sidebar-nav a:hover { background: var(--accent-muted); color: var(--text-primary); }
.sidebar-nav a.active {
  background: var(--accent-muted); color: var(--accent);
  border: 1px solid var(--border-strong);
}
.sidebar-nav .nav-icon { font-size: 1.1rem; width: 22px; text-align: center; }

.sidebar-footer {
  padding: 0 24px; margin-top: auto; display: flex; flex-direction: column; gap: 8px;
}
.sidebar-footer .btn {
  width: 100%; justify-content: center; font-size: 0.85rem; padding: 10px 16px;
}
.sidebar-login {
  padding: 12px 16px; margin: 0 12px 8px;
  border-radius: var(--radius-sm);
  background: rgba(167,139,250,0.06);
  border: 1px solid var(--border-subtle);
  cursor: pointer; text-align: center; font-size: 0.85rem;
  color: var(--text-secondary); transition: all .15s;
}
.sidebar-login:hover { border-color: var(--border-strong); color: var(--accent); background: var(--accent-muted); }
.sidebar-user { display: flex; align-items: center; gap: 8px; padding: 6px 12px; margin: 0 12px 8px; border-radius: var(--radius-sm); font-size: 0.85rem; }
.sidebar-user .su-name { flex: 1; color: var(--text-primary); font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sidebar-user .su-logout { color: var(--text-tertiary); cursor: pointer; font-size: 0.75rem; padding: 2px 6px; border-radius: 4px; border: 1px solid var(--border-subtle); background: none; font-family: var(--font); }
.sidebar-user .su-logout:hover { color: #EF4444; border-color: #EF4444; }

@media (max-width: 900px) {
  #sidebar {
    width: 100%; height: auto; bottom: auto;
    flex-direction: row; align-items: center;
    padding: 12px 16px; gap: 8px;
    border-right: none; border-bottom: 1px solid var(--border-subtle);
  }
  .sidebar-logo { margin-bottom: 0; padding: 0; }
  .sidebar-logo .logo-text { display: none; }
  .sidebar-nav { flex-direction: row; padding: 0; }
  .sidebar-nav a { padding: 6px 10px; font-size: 0.8rem; }
  .sidebar-nav .nav-text { display: none; }
  .sidebar-footer { margin-top: 0; }
  .sidebar-footer .btn { padding: 6px 12px; font-size: 0.8rem; }
}