/* ============================================================
   MATSPELL — LAYOUT
   App shell: sidebar + main area + page header
   ============================================================ */

/* ── App Shell ── */
.app-shell {
  display: flex;
  min-height: 100vh;
  background: var(--color-bg-subtle);
}

/* ── Sidebar ── */
#sidebar {
  width: var(--sidebar-width);
  min-height: 100vh;
  background: var(--color-bg);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  z-index: var(--z-sidebar);
  overflow-y: auto;
  overflow-x: hidden;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-5) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  text-decoration: none;
}

.sidebar-logo-icon {
  color: var(--color-primary);
  flex-shrink: 0;
  width: 18px;
  height: 18px;
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.sidebar-user-info {
  min-width: 0;
}

.sidebar-user-name {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-user-role {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.sidebar-nav {
  flex: 1;
  padding: var(--space-3) var(--space-2);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.sidebar-section-label {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  padding: var(--space-3) var(--space-2) var(--space-1);
  margin-top: var(--space-2);
}

.sidebar-section-label:first-child {
  margin-top: 0;
}

/* ── Sidebar Nav Items ── */
.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
  min-height: 36px;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
}

.nav-item:hover {
  background: var(--color-bg-muted);
  color: var(--color-text);
}

.nav-item.active {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

.nav-item.active .nav-icon {
  color: var(--color-primary);
}

.nav-item.disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

.nav-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: currentColor;
}

.nav-badge {
  margin-left: auto;
  background: var(--color-red);
  color: var(--color-text-inverse);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-bold);
  padding: 1px 6px;
  border-radius: var(--radius-full);
  min-width: 18px;
  text-align: center;
}

/* ── Sidebar Footer ── */
.sidebar-footer {
  padding: var(--space-3) var(--space-2);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

/* ── Main Content Area ── */
.main {
  margin-left: var(--sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-width: 0;
}

/* ── Page Header ── */
.top-strip {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-6);
  gap: var(--space-4);
}

.page-title {
  font-size: var(--text-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
}

.page-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: auto;
}

/* ── Page Content ── */
.content {
  flex: 1;
  padding: var(--space-6);
  width: 100%;
  max-width: var(--content-max-width);
}

/* ── Content Sections ── */
.section {
  margin-bottom: var(--space-8);
}

.section-label {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

/* ── Login screen layout overrides ── */
.login-screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: var(--color-bg-subtle);
  padding: var(--space-6);
  width: 100%;
}
.login-card {
  width: 100%;
  max-width: 400px;
}