/* ==========================================================================
   MKS Staff Layout — "MKS Workspace"
   Standalone layout system for the internal staff area.
   Extends variables from variables.css.
   ========================================================================== */

/* ---- Staff Design Tokens ---- */
:root {
  --staff-sidebar-width: 220px;
  --staff-sidebar-collapsed: 56px;
  --staff-topbar-height: 52px;
  --staff-bg: var(--mks-gray-light, #f5f5f5);
  --staff-content-bg: #ffffff;
  --staff-sidebar-bg: #ffffff;
  --staff-sidebar-hover: var(--mks-gray-light, #f5f5f5);
  --staff-sidebar-active: rgba(209, 19, 23, 0.08);
  --staff-sidebar-active-border: var(--mks-primary, #d11317);
  --staff-topbar-bg: #ffffff;
  --staff-topbar-border: #e0e0e0;
  --staff-sidebar-border: #e8e8e8;
  --staff-transition: 0.2s ease;
}

/* ---- Reset for staff body ---- */
.mks-staff-body {
  margin: 0;
  padding: 0;
  background-color: var(--staff-bg);
  color: var(--mks-text, #333);
  font-family: var(--mks-font, 'jaf-bernina-sans-condensed', sans-serif);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Simulation banner offset */
.mks-staff-body.simulation-active .mks-staff-topbar {
  top: 35px;
}

.mks-staff-body.simulation-active .mks-staff-layout {
  padding-top: calc(var(--staff-topbar-height) + 35px);
}

.mks-staff-body.simulation-active .mks-staff-sidebar {
  top: calc(var(--staff-topbar-height) + 35px);
  height: calc(100vh - var(--staff-topbar-height) - 35px);
}

/* ---- Topbar ---- */
.mks-staff-topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--staff-topbar-height);
  background: var(--staff-topbar-bg);
  border-bottom: 1px solid var(--staff-topbar-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 100;
  box-sizing: border-box;
}

.mks-staff-topbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.mks-staff-topbar-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.mks-staff-topbar-logo svg {
  height: 2rem;
  width: auto;
}

.mks-staff-topbar-divider {
  width: 1px;
  height: 24px;
  background: var(--staff-topbar-border);
  flex-shrink: 0;
}

.mks-staff-topbar-title {
  font-size: 1rem;
  font-weight: 500;
  color: var(--mks-text, #333);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mks-staff-topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.mks-staff-user-name {
  font-size: 0.9rem;
  color: var(--mks-text, #333);
  font-weight: 400;
}

.mks-staff-role-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 10px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.mks-staff-role-badge.role-admin {
  background: var(--mks-primary, #d11317);
  color: #fff;
}

.mks-staff-role-badge.role-staff {
  background: var(--mks-accent-blue, #2082a8);
  color: #fff;
}

.mks-staff-role-badge.role-coordinator {
  background: var(--mks-accent-pink, #ba1a63);
  color: #fff;
}

.mks-staff-role-badge.role-teacher {
  background: var(--mks-success, #10b981);
  color: #fff;
}

.mks-staff-logout-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--mks-gray-dark, #555);
  background: transparent;
  border: 1px solid var(--mks-gray-medium, #e0e0e0);
  border-radius: 6px;
  cursor: pointer;
  text-decoration: none;
  font-family: inherit;
  transition: var(--staff-transition);
}

.mks-staff-logout-btn:hover {
  background: var(--mks-gray-light, #f5f5f5);
  border-color: var(--mks-gray-dark, #555);
  color: var(--mks-text, #333);
}

/* Hamburger button (mobile only) */
.mks-staff-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  color: var(--mks-text, #333);
}

.mks-staff-hamburger svg {
  width: 24px;
  height: 24px;
}

/* ---- Layout Grid ---- */
.mks-staff-layout {
  display: flex;
  padding-top: var(--staff-topbar-height);
  min-height: 100vh;
}

/* ---- Sidebar ---- */
.mks-staff-sidebar {
  position: fixed;
  top: var(--staff-topbar-height);
  left: 0;
  bottom: 0;
  width: var(--staff-sidebar-width);
  background: var(--staff-sidebar-bg);
  border-right: 1px solid var(--staff-sidebar-border);
  overflow-x: hidden;
  overflow-y: auto;
  z-index: 50;
  transition: width var(--staff-transition);
  display: flex;
  flex-direction: column;
}

.mks-staff-sidebar.collapsed {
  width: var(--staff-sidebar-collapsed);
}

/* Scrollbar styling */
.mks-staff-sidebar::-webkit-scrollbar {
  width: 4px;
}

.mks-staff-sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.mks-staff-sidebar::-webkit-scrollbar-thumb {
  background: #ddd;
  border-radius: 2px;
}

/* Sidebar collapse toggle */
.mks-staff-sidebar-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px 16px;
  border: none;
  background: none;
  cursor: pointer;
  color: var(--mks-gray-dark, #555);
  transition: var(--staff-transition);
  border-bottom: 1px solid var(--staff-sidebar-border);
  flex-shrink: 0;
}

.mks-staff-sidebar-toggle:hover {
  background: var(--staff-sidebar-hover);
  color: var(--mks-text, #333);
}

.mks-staff-sidebar-toggle svg {
  width: 20px;
  height: 20px;
  transition: transform var(--staff-transition);
}

.mks-staff-sidebar.collapsed .mks-staff-sidebar-toggle svg {
  transform: rotate(180deg);
}

/* Sidebar navigation */
.mks-staff-sidebar-nav {
  flex: 1;
  padding: 8px 0;
}

.mks-staff-nav-section {
  margin-bottom: 4px;
}

.mks-staff-nav-section-title {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #999;
  padding: 12px 16px 4px;
  white-space: nowrap;
  overflow: hidden;
}

.mks-staff-sidebar.collapsed .mks-staff-nav-section-title {
  visibility: hidden;
  height: 0;
  padding: 0;
  margin: 0;
}

.mks-staff-nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  color: var(--mks-text, #333);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 400;
  white-space: nowrap;
  border-left: 3px solid transparent;
  transition: var(--staff-transition);
  position: relative;
}

.mks-staff-nav-link:hover {
  background: var(--staff-sidebar-hover);
  text-decoration: none;
  color: var(--mks-text, #333);
}

.mks-staff-nav-link.active {
  background: var(--staff-sidebar-active);
  border-left-color: var(--staff-sidebar-active-border);
  font-weight: 500;
  color: var(--mks-primary, #d11317);
}

.mks-staff-nav-link svg,
.mks-staff-nav-link .nav-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  opacity: 0.7;
}

.mks-staff-nav-link.active svg,
.mks-staff-nav-link.active .nav-icon {
  opacity: 1;
  color: var(--mks-primary, #d11317);
}

.mks-staff-nav-link .nav-label {
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Collapsed sidebar: hide labels, show tooltip on hover */
.mks-staff-sidebar.collapsed .mks-staff-nav-link {
  justify-content: center;
  padding: 10px 0;
  border-left-width: 3px;
}

.mks-staff-sidebar.collapsed .nav-label {
  display: none;
}

/* Tooltip for collapsed sidebar */
.mks-staff-sidebar.collapsed .mks-staff-nav-link[data-tooltip]:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  left: calc(var(--staff-sidebar-collapsed) - 3px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--mks-text, #333);
  color: #fff;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.8rem;
  white-space: nowrap;
  z-index: 200;
  pointer-events: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* Sidebar section separator */
.mks-staff-nav-separator {
  height: 1px;
  background: var(--staff-sidebar-border);
  margin: 8px 12px;
}

.mks-staff-sidebar.collapsed .mks-staff-nav-separator {
  margin: 8px 8px;
}

/* Sidebar bottom section (Konto) */
.mks-staff-sidebar-bottom {
  border-top: 1px solid var(--staff-sidebar-border);
  padding: 8px 0;
  flex-shrink: 0;
}

/* ---- Main Content ---- */
.mks-staff-content {
  flex: 1;
  margin-left: var(--staff-sidebar-width);
  padding: 24px;
  min-height: calc(100vh - var(--staff-topbar-height));
  transition: margin-left var(--staff-transition);
  max-width: 100%;
  box-sizing: border-box;
}

.mks-staff-sidebar.collapsed ~ .mks-staff-content,
.mks-staff-layout.sidebar-collapsed .mks-staff-content {
  margin-left: var(--staff-sidebar-collapsed);
}

/* ---- Mobile Backdrop ---- */
.mks-staff-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 49;
}

.mks-staff-backdrop.visible {
  display: block;
}

/* ---- Messages / Alerts ---- */
.mks-staff-messages {
  margin-bottom: 16px;
}

.mks-staff-alert {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-radius: var(--mks-border-radius, 8px);
  font-size: 0.9rem;
  margin-bottom: 8px;
  border-left: 4px solid;
}

.mks-staff-alert-success {
  background: #ecfdf5;
  border-left-color: var(--mks-success, #10b981);
  color: #065f46;
}

.mks-staff-alert-error {
  background: #fef2f2;
  border-left-color: var(--mks-danger, #dc2626);
  color: #991b1b;
}

.mks-staff-alert-warning {
  background: #fffbeb;
  border-left-color: var(--mks-warning, #f59e0b);
  color: #92400e;
}

.mks-staff-alert-info {
  background: #eff6ff;
  border-left-color: var(--mks-accent-blue, #2082a8);
  color: #1e40af;
}

.mks-staff-alert-close {
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  color: inherit;
  opacity: 0.6;
  padding: 0 0 0 8px;
  line-height: 1;
}

.mks-staff-alert-close:hover {
  opacity: 1;
}

/* ---- Responsive: Tablet & Mobile ---- */
@media (max-width: 820px) {
  .mks-staff-hamburger {
    display: block;
  }

  .mks-staff-topbar-title {
    display: none;
  }

  .mks-staff-topbar-divider {
    display: none;
  }

  .mks-staff-user-name {
    display: none;
  }

  .mks-staff-sidebar {
    width: var(--staff-sidebar-width);
    transform: translateX(-100%);
    transition: transform var(--staff-transition);
    z-index: 51;
  }

  .mks-staff-sidebar.collapsed {
    width: var(--staff-sidebar-width);
    transform: translateX(-100%);
  }

  .mks-staff-sidebar.mobile-open {
    transform: translateX(0);
  }

  /* When mobile-open, always show labels */
  .mks-staff-sidebar.mobile-open .nav-label {
    display: inline;
  }

  .mks-staff-sidebar.mobile-open .mks-staff-nav-section-title {
    visibility: visible;
    height: auto;
    padding: 12px 16px 4px;
  }

  .mks-staff-sidebar.mobile-open .mks-staff-nav-link {
    justify-content: flex-start;
    padding: 8px 16px;
  }

  .mks-staff-sidebar-toggle {
    display: none;
  }

  .mks-staff-content {
    margin-left: 0;
    padding: 16px;
  }

  .mks-staff-layout.sidebar-collapsed .mks-staff-content {
    margin-left: 0;
  }
}

@media (max-width: 480px) {
  .mks-staff-topbar {
    padding: 0 10px;
  }

  .mks-staff-topbar-logo svg {
    height: 1.6rem;
  }

  .mks-staff-content {
    padding: 12px;
  }

  .mks-staff-role-badge {
    display: none;
  }

  .mks-staff-logout-btn span {
    display: none;
  }
}