/* ================================================================
   LMS Staff Portal — Layout & Components
   Extends LMS design tokens (lms_tokens.css) and component library
   (lms_components.css) for the staff-facing web portal.
   ================================================================ */

/* ── Portal wrapper ── */
.staff-portal-wrap {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--lms-bg, #f8f9fa);
  color: var(--lms-text, #1a1a2e);
}

/* ── Header ── */
.staff-portal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  background: var(--lms-surface, #fff);
  border-bottom: 1px solid var(--lms-border, #e2e8f0);
  position: sticky;
  top: 0;
  z-index: 100;
  gap: 1rem;
}

.staff-portal-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.staff-portal-logo {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--lms-accent, #2f4f46);
  color: #fff;
  font-weight: 700;
  font-size: 1.1rem;
}

.staff-portal-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.staff-portal-title {
  font-size: 1rem;
  font-weight: 700;
  margin: 0;
  line-height: 1.2;
  color: var(--lms-text, #1a1a2e);
}

.staff-portal-role-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  background: var(--lms-accent, #2f4f46);
  color: #fff;
  line-height: 1.4;
}

.staff-portal-header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.staff-portal-user-name {
  font-size: 0.85rem;
  color: var(--lms-text-muted, #64748b);
}

.staff-portal-logout-btn {
  font-size: 0.8rem;
  color: var(--lms-text-muted, #64748b);
  text-decoration: none;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  border: 1px solid var(--lms-border, #e2e8f0);
  transition: background 0.15s, color 0.15s;
}

.staff-portal-logout-btn:hover {
  background: var(--lms-danger, #dc3545);
  color: #fff;
  border-color: var(--lms-danger, #dc3545);
}

.staff-portal-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--lms-text, #1a1a2e);
  cursor: pointer;
  padding: 0.25rem;
}

/* ── Body layout (sidebar + content) ── */
.staff-portal-body {
  display: flex;
  flex: 1;
  min-height: 0;
}

/* ── Sidebar ── */
.staff-portal-sidebar {
  width: 240px;
  min-width: 240px;
  background: var(--lms-surface, #fff);
  border-right: 1px solid var(--lms-border, #e2e8f0);
  padding: 1rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.staff-portal-sidebar__link {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.6rem 1.25rem;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--lms-text-muted, #64748b);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.staff-portal-sidebar__link:hover {
  background: var(--lms-bg, #f8f9fa);
  color: var(--lms-text, #1a1a2e);
}

.staff-portal-sidebar__link.is-active {
  color: var(--lms-accent, #2f4f46);
  background: color-mix(in srgb, var(--lms-accent, #2f4f46) 8%, transparent);
  border-left-color: var(--lms-accent, #2f4f46);
  font-weight: 600;
}

.staff-portal-sidebar__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  flex-shrink: 0;
}

.staff-portal-sidebar__divider {
  height: 1px;
  background: var(--lms-border, #e2e8f0);
  margin: 0.5rem 1.25rem;
}

/* ── Main content ── */
.staff-portal-main {
  flex: 1;
  padding: 1.5rem 2rem;
  overflow-y: auto;
  max-width: 1200px;
}

.staff-portal-footer {
  padding: 0.75rem 1.5rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--lms-text-muted, #64748b);
  border-top: 1px solid var(--lms-border, #e2e8f0);
}

/* ── Page hero / header ── */
.staff-page-header {
  margin-bottom: 1.5rem;
}

.staff-page-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 0.25rem 0;
  color: var(--lms-text, #1a1a2e);
}

.staff-page-header p {
  font-size: 0.9rem;
  color: var(--lms-text-muted, #64748b);
  margin: 0;
}

/* ── KPI card grid ── */
.staff-kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.staff-kpi-card {
  background: var(--lms-surface, #fff);
  border: 1px solid var(--lms-border, #e2e8f0);
  border-radius: 12px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  transition: box-shadow 0.2s;
}

.staff-kpi-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.staff-kpi-card__label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--lms-text-muted, #64748b);
}

.staff-kpi-card__value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--lms-text, #1a1a2e);
  line-height: 1.1;
}

.staff-kpi-card__value.is-positive { color: var(--lms-success, #16a34a); }
.staff-kpi-card__value.is-warning  { color: var(--lms-warning, #f59e0b); }
.staff-kpi-card__value.is-danger   { color: var(--lms-danger, #dc3545); }

.staff-kpi-card__sub {
  font-size: 0.8rem;
  color: var(--lms-text-muted, #64748b);
}

/* ── Panel / section card ── */
.staff-panel {
  background: var(--lms-surface, #fff);
  border: 1px solid var(--lms-border, #e2e8f0);
  border-radius: 12px;
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.staff-panel__title {
  font-size: 0.95rem;
  font-weight: 700;
  margin: 0 0 1rem 0;
  color: var(--lms-text, #1a1a2e);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.staff-panel__title .badge {
  font-size: 0.7rem;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: var(--lms-accent, #2f4f46);
  color: #fff;
  font-weight: 600;
}

/* ── Data table ── */
.staff-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.staff-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.staff-table th {
  text-align: left;
  padding: 0.6rem 0.75rem;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--lms-text-muted, #64748b);
  border-bottom: 2px solid var(--lms-border, #e2e8f0);
  white-space: nowrap;
}

.staff-table td {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--lms-border, #e2e8f0);
  vertical-align: middle;
}

.staff-table tbody tr:hover {
  background: color-mix(in srgb, var(--lms-accent, #2f4f46) 4%, transparent);
}

.staff-table .text-right { text-align: right; }
.staff-table .text-center { text-align: center; }

/* ── Status badges ── */
.staff-status-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  line-height: 1.4;
}

.staff-status-badge.is-success { background: #dcfce7; color: #15803d; }
.staff-status-badge.is-warning { background: #fef3c7; color: #92400e; }
.staff-status-badge.is-danger  { background: #fecaca; color: #991b1b; }
.staff-status-badge.is-info    { background: #dbeafe; color: #1e40af; }
.staff-status-badge.is-muted   { background: #f1f5f9; color: #475569; }

/* ── Action buttons ── */
.staff-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s, box-shadow 0.15s;
  text-decoration: none;
  line-height: 1.4;
}

.staff-btn:active { transform: scale(0.97); }

.staff-btn-primary {
  background: var(--lms-accent, #2f4f46);
  color: #fff;
}
.staff-btn-primary:hover { background: color-mix(in srgb, var(--lms-accent, #2f4f46) 85%, #000); }

.staff-btn-success {
  background: var(--lms-success, #16a34a);
  color: #fff;
}
.staff-btn-success:hover { background: #15803d; }

.staff-btn-danger {
  background: var(--lms-danger, #dc3545);
  color: #fff;
}
.staff-btn-danger:hover { background: #b91c1c; }

.staff-btn-outline {
  background: transparent;
  border: 1px solid var(--lms-border, #e2e8f0);
  color: var(--lms-text, #1a1a2e);
}
.staff-btn-outline:hover { background: var(--lms-bg, #f8f9fa); }

.staff-btn-sm {
  padding: 0.3rem 0.7rem;
  font-size: 0.78rem;
}

.staff-btn-group {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* ── Modal / overlay ── */
.staff-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.staff-modal-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.staff-modal {
  background: var(--lms-surface, #fff);
  border-radius: 16px;
  width: 90%;
  max-width: 520px;
  max-height: 85vh;
  overflow-y: auto;
  padding: 1.5rem;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.12);
  transform: translateY(20px);
  transition: transform 0.2s;
}

.staff-modal-overlay.is-open .staff-modal { transform: translateY(0); }

.staff-modal__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.staff-modal__title {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0;
}

.staff-modal__close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--lms-text-muted, #64748b);
  line-height: 1;
}

/* ── Form elements ── */
.staff-form-group {
  margin-bottom: 1rem;
}

.staff-form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--lms-text, #1a1a2e);
  margin-bottom: 0.3rem;
}

.staff-form-input {
  width: 100%;
  padding: 0.55rem 0.75rem;
  font-size: 0.88rem;
  border: 1px solid var(--lms-border, #e2e8f0);
  border-radius: 8px;
  background: var(--lms-bg, #f8f9fa);
  color: var(--lms-text, #1a1a2e);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.staff-form-input:focus {
  /* v3: keep the focus ring via box-shadow (visual) + outline (a11y) */
  outline: 2px solid var(--lms-focus, var(--lms-accent, #2f4f46));
  outline-offset: 1px;
  border-color: var(--lms-accent, #2f4f46);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--lms-accent, #2f4f46) 15%, transparent);
}

.staff-form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%2364748b' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2rem;
}

/* ── Loading state ── */
.staff-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem;
  color: var(--lms-text-muted, #64748b);
  font-size: 0.9rem;
}

.staff-loading::before {
  content: '';
  width: 20px;
  height: 20px;
  border: 2px solid var(--lms-border, #e2e8f0);
  border-top-color: var(--lms-accent, #2f4f46);
  border-radius: 50%;
  animation: staff-spin 0.6s linear infinite;
  margin-right: 0.5rem;
}

@keyframes staff-spin {
  to { transform: rotate(360deg); }
}

/* ── Empty state ── */
.staff-empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--lms-text-muted, #64748b);
}

.staff-empty-state svg {
  width: 48px;
  height: 48px;
  margin-bottom: 0.75rem;
  opacity: 0.4;
}

.staff-empty-state p {
  font-size: 0.9rem;
  margin: 0;
}

/* ── Toast (flash msg) ── */
.staff-toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  padding: 0.75rem 1.25rem;
  border-radius: 10px;
  font-size: 0.85rem;
  font-weight: 600;
  z-index: 300;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  transform: translateY(20px);
  opacity: 0;
  transition: transform 0.25s, opacity 0.25s;
  pointer-events: none;
}

.staff-toast.is-visible {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.staff-toast.is-success { background: #16a34a; color: #fff; }
.staff-toast.is-error   { background: #dc3545; color: #fff; }
.staff-toast.is-info    { background: #2563eb; color: #fff; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .staff-portal-header-right {
    display: none;
  }

  .staff-portal-menu-toggle {
    display: block;
  }

  .staff-portal-sidebar {
    position: fixed;
    top: 57px;
    left: 0;
    bottom: 0;
    z-index: 99;
    transform: translateX(-100%);
    transition: transform 0.25s;
    box-shadow: 4px 0 16px rgba(0, 0, 0, 0.08);
  }

  .staff-portal-sidebar.is-open {
    transform: translateX(0);
  }

  .staff-portal-main {
    padding: 1rem;
  }

  .staff-kpi-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .staff-kpi-card__value {
    font-size: 1.35rem;
  }

  .staff-modal {
    width: 95%;
    max-height: 90vh;
  }
}

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

/* ================================================================== */
/*  v3.4 — Phase 2 staff sidebar mini-mode                             */
/* ================================================================== */

.staff-portal-sidebar {
  position: relative;
  /* animate width + padding (Phase 2.4) */
  inline-size: 220px;
  padding-inline: 0;
  transition: inline-size var(--lms-transition-base) var(--lms-ease-out-quart),
              padding-inline var(--lms-transition-base) var(--lms-ease-out-quart);
}

.staff-portal-sidebar.is-mini {
  inline-size: 56px;
}

.staff-portal-sidebar.is-mini .staff-portal-sidebar__link {
  justify-content: center;
  padding-inline: 0.5rem;
}

.staff-portal-sidebar.is-mini .staff-portal-sidebar__label,
.staff-portal-sidebar.is-mini .staff-portal-sidebar__divider--label {
  display: none;
}

/* Toggle button (chevron) anchored at the top of the sidebar */
.staff-portal-sidebar__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  align-self: flex-end;
  margin: 0 0.5rem 0.5rem auto;
  padding: 0.35rem;
  background: transparent;
  border: 1px solid var(--lms-border, #e2e8f0);
  border-radius: 8px;
  color: var(--lms-text-muted, #64748b);
  cursor: pointer;
  min-width: 32px;
  min-height: 32px;
  transition: background var(--lms-transition-fast), color var(--lms-transition-fast);
}

.staff-portal-sidebar__toggle:hover {
  background: var(--lms-bg, #f8f9fa);
  color: var(--lms-text, #1a1a2e);
}

.staff-portal-sidebar__toggle:focus-visible {
  outline: 2px solid var(--lms-focus, var(--lms-accent, #2f4f46));
  outline-offset: 2px;
}

.staff-portal-sidebar.is-mini .staff-portal-sidebar__toggle svg {
  transform: rotate(180deg);
}

.staff-portal-sidebar.is-mini .staff-portal-sidebar__toggle {
  transform: none;
}

.staff-portal-sidebar.is-mini .staff-portal-sidebar__toggle svg {
  transition: transform var(--lms-transition-base) var(--lms-ease-out-quart);
}

/* Tooltip popover for mini-mode labels */
.staff-portal-sidebar__link {
  position: relative;
}

.staff-portal-sidebar.is-mini .staff-portal-sidebar__link::after {
  content: attr(data-label);
  position: absolute;
  left: calc(100% + 0.5rem);
  top: 50%;
  transform: translateY(-50%) translateX(-4px);
  padding: 0.35rem 0.55rem;
  background: var(--lms-text, #1a1a2e);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 500;
  white-space: nowrap;
  border-radius: 6px;
  box-shadow: var(--lms-shadow-sm);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--lms-transition-fast), transform var(--lms-transition-fast);
  z-index: 200;
}

.staff-portal-sidebar.is-mini .staff-portal-sidebar__link:hover::after,
.staff-portal-sidebar.is-mini .staff-portal-sidebar__link:focus-visible::after {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

/* Tablet portrait — push sidebar off-screen */
@media (max-width: 900px) {
  .staff-portal-sidebar {
    inline-size: 240px;
    position: fixed;
    top: 57px;
    left: 0;
    bottom: 0;
    z-index: 99;
    transform: translateX(-100%);
    transition: transform var(--lms-transition-base), inline-size var(--lms-transition-base);
    box-shadow: 4px 0 16px rgba(0, 0, 0, 0.08);
  }
  .staff-portal-sidebar.is-open,
  .staff-portal-sidebar.is-mini.is-open {
    transform: translateX(0);
  }
}