/* ============================================================
   LAYOUT — Sidebar, Main Content, Page Wrappers
   ============================================================ */

/* --- App shell --- */
.app { display: flex; min-height: 100vh; }

/* --- Sidebar --- */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background-color: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  z-index: 100;
}

.sidebar__brand {
  padding: var(--space-5) var(--space-5);
  border-bottom: 1px solid var(--color-border-light);
}
.sidebar__brand-name {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.3;
}
.sidebar__brand-sub {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.3;
}

.sidebar__nav {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4) var(--space-3);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3) var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: background-color var(--transition), color var(--transition);
  text-decoration: none;
}
.nav-link:hover { background-color: var(--color-bg); color: var(--color-text); text-decoration: none; }
.nav-link.active { background-color: var(--color-primary); color: var(--color-white); }

.nav-divider { height: 1px; background-color: var(--color-border-light); margin: var(--space-2) 0; }

.nav-logout {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-danger);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  transition: background-color var(--transition);
}
.nav-logout:hover { background-color: var(--color-danger-bg); }

.sidebar__footer {
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.sidebar__user-name  { font-size: 0.8125rem; font-weight: 500; color: var(--color-text); }
.sidebar__user-email { font-size: 0.75rem; color: var(--color-text-faint); }

/* --- Mobile header --- */
.mobile-header {
  display: none;
  align-items: center;
  justify-content: space-between;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-3) var(--space-4);
  position: sticky;
  top: 0;
  z-index: 50;
}
.mobile-menu-btn {
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--color-text-muted);
  padding: var(--space-1);
  border-radius: var(--radius-sm);
}
.mobile-menu-btn:hover { background-color: var(--color-bg); }

.mobile-nav {
  display: none;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-3) var(--space-4);
  flex-direction: column;
  gap: 2px;
}
.mobile-nav.open { display: flex; }

/* --- Main content --- */
.main {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-height: 100vh;
  padding: var(--space-6);
}

/* --- Centered page (public pages) --- */
.page-center {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8) var(--space-6);
}

/* --- Page header --- */
.page-header { margin-bottom: var(--space-8); }
.page-header h1 { font-size: 1.25rem; font-weight: 600; color: var(--color-text); }
.page-header p  { margin-top: var(--space-1); font-size: 0.875rem; color: var(--color-text-faint); }

.page-header--row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-8);
}

/* --- Stats grid --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}
@media (max-width: 768px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }

.stat-card {
  border-radius: var(--radius-xl);
  padding: var(--space-4);
  cursor: pointer;
  border: 1px solid transparent;
  transition: border-color var(--transition);
}
.stat-card:hover { border-color: var(--color-border); }
.stat-card__label { font-size: 0.75rem; font-weight: 500; text-transform: capitalize; margin-bottom: var(--space-2); display: flex; align-items: center; gap: var(--space-2); }
.stat-card__dot   { width: 0.5rem; height: 0.5rem; border-radius: 50%; flex-shrink: 0; }
.stat-card__value { font-size: 1.875rem; font-weight: 700; }

.stat-card--pending    { background: var(--color-pending-bg);    color: var(--color-pending); }
.stat-card--reviewing  { background: var(--color-reviewing-bg);  color: var(--color-reviewing); }
.stat-card--processing { background: var(--color-processing-bg); color: var(--color-processing); }
.stat-card--completed  { background: var(--color-completed-bg);  color: var(--color-completed); }

.stat-card--pending    .stat-card__dot { background: var(--color-pending); }
.stat-card--reviewing  .stat-card__dot { background: var(--color-reviewing); }
.stat-card--processing .stat-card__dot { background: var(--color-processing); }
.stat-card--completed  .stat-card__dot { background: var(--color-completed); }

/* --- Filters bar --- */
.filters { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-bottom: var(--space-4); align-items: center; }
.search-form { display: flex; gap: var(--space-2); }

/* --- Responsive --- */
@media (max-width: 768px) {
  .sidebar { display: none; }
  .mobile-header { display: flex; }
  .main { margin-left: 0; padding: var(--space-4); }
}