/* ----- Empty State ----- */
.empty-state {
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-md);
  opacity: 0.4;
}

.empty-state-text {
  font-size: var(--text-base);
  margin-bottom: var(--space-md);
}


/* ----- Section Title ----- */
.section-title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}


/* ----- Stats Row ----- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.stat-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  text-align: center;
  transition: all var(--transition-fast);
}

.stat-card:hover {
  border-color: var(--border-hover);
}

.stat-value {
  font-size: var(--text-3xl);
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: var(--text-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: var(--space-xs);
}


/* ----- Scrollbar ----- */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--border-hover);
}


/* ----- Page Transitions ----- */
.page {
  display: none;
  animation: fadeIn 0.35s ease;
}

.page.active {
  display: block;
}

/* ==============================================
   MOBILE-FIRST RESPONSIVE DESIGN
   ============================================== */


/* ----- Burger Menu Toggle ----- */
.burger-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  z-index: 201;
  gap: 5px;
  flex-shrink: 0;
}

.burger-line {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transform-origin: center;
}

.burger-toggle.active .burger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.burger-toggle.active .burger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.burger-toggle.active .burger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}


/* ----- Mobile Menu Overlay ----- */
.mobile-menu-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 99;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.mobile-menu-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

/* ---- Touch-friendly: replace hover with active/tap on touch devices ---- */
@media (hover: none) and (pointer: coarse) {
  .card:hover {
    transform: none;
    box-shadow: var(--shadow-sm);
  }

  .card:active {
    transform: scale(0.98);
    border-color: var(--border-hover);
  }

  .btn-primary:hover:not(:disabled) {
    transform: none;
    box-shadow: 0 2px 8px var(--accent-glow);
  }

  .btn-primary:active:not(:disabled) {
    transform: scale(0.97);
    box-shadow: 0 4px 16px var(--accent-glow-hover);
  }

  .btn-secondary:hover:not(:disabled) {
    background: var(--bg-glass);
    color: var(--text-secondary);
    border-color: var(--border-color);
  }

  .btn-secondary:active:not(:disabled) {
    background: var(--bg-glass-hover);
    color: var(--text-primary);
    border-color: var(--border-hover);
  }

  .lesson-item:hover {
    transform: none;
  }

  .lesson-item:active {
    background: var(--bg-glass-hover);
    border-color: var(--border-hover);
    transform: translateX(2px);
  }

  .choice-card:hover {
    transform: none;
    box-shadow: none;
  }

  .choice-card:active {
    border-color: var(--accent-primary);
    background: var(--bg-glass-hover);
    transform: scale(0.98);
  }

  .roadmap-item.completed-success:hover,
  .roadmap-item.completed-failed:hover {
    transform: none;
  }

  .roadmap-item.completed-success:active,
  .roadmap-item.completed-failed:active {
    transform: scale(1.05);
  }

  .theme-toggle:hover {
    transform: none;
  }

  .theme-toggle:active {
    background: var(--bg-glass-hover);
    border-color: var(--border-hover);
    transform: rotate(30deg);
  }

  .modal-close:hover {
    transform: none;
    background: var(--bg-glass);
    color: inherit;
  }

  .modal-close:active {
    background: var(--danger);
    color: white;
    transform: rotate(90deg);
  }

  .stat-card:hover {
    border-color: var(--border-color);
  }

  .stat-card:active {
    border-color: var(--border-hover);
  }
}

/* ====== BREAKPOINT: max-width 768px (Tablets & below) ====== */
@media (max-width: 768px) {

  /* -- Burger visibility -- */
  .burger-toggle {
    display: flex;
  }

  .mobile-menu-overlay {
    display: block;
  }

  /* -- Mobile Navigation Drawer -- */
  .navbar {
    padding: var(--space-sm) var(--space-md);
  }

  .navbar-inner {
    flex-wrap: wrap;
    position: relative;
  }

  .navbar-brand {
    font-size: var(--text-base);
  }

  .navbar-brand .brand-icon {
    width: 28px;
    height: 28px;
    font-size: var(--text-base);
  }

  .navbar-nav {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    height: 100vh;
    height: 100dvh;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    flex-direction: column;
    flex: none;
    align-items: stretch;
    padding: var(--space-lg) var(--space-md) var(--space-lg);
    z-index: 200;
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    gap: var(--space-xs);
    box-shadow: 4px 0 30px rgba(0, 0, 0, 0.15);
  }

  .navbar-nav.mobile-open {
    transform: translateX(0);
  }

  .mobile-nav-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding-bottom: var(--space-md);
    margin-bottom: var(--space-sm);
    border-bottom: 1px solid var(--border-color);
  }

  .mobile-nav-header .brand-icon {
    width: 28px;
    height: 28px;
    font-size: var(--text-base);
  }

  .mobile-nav-title {
    font-weight: 700;
    font-size: var(--text-base);
    color: var(--text-primary);
  }

  .nav-link {
    padding: var(--space-md);
    font-size: var(--text-base);
    border-radius: var(--radius-md);
    min-height: 44px;
    display: flex;
    align-items: center;
    text-align: left;
    width: 100%;
  }

  .nav-user {
    margin-left: 0;
    margin-top: auto;
    padding-left: 0;
    padding-top: var(--space-md);
    border-left: none;
    /*border-top: 1px solid var(--border-color);*/
    gap: var(--space-sm);
    width: 100%;
    flex-wrap: wrap;
    justify-content: center;
  }

  .user-name {
    display: block;
    width: 100%;
    text-align: center;
    font-size: var(--text-sm);
  }

  .btn-logout {
    padding: 8px 12px;
    min-height: 40px;
    width: 100%;
    text-align: center;
  }

  #nav-user-logged-in {
    width: 100%;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
  }

  #nav-user-guest {
    width: 100%;
  }

  #nav-user-guest .btn {
    width: 100%;
  }

  /* -- Main Content -- */
  .main-content {
    padding: var(--space-md);
  }

  /* -- Page Header -- */
  .page-header {
    margin-bottom: var(--space-lg);
  }

  .page-header h1 {
    font-size: var(--text-3xl);
    line-height: 1.3;
  }

  .page-header p {
    font-size: var(--text-sm);
    line-height: 1.5;
  }

  /* -- Grids: single column -- */
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .grid {
    gap: var(--space-md);
  }

  /* -- Cards -- */
  .card {
    padding: var(--space-md);
    border-radius: var(--radius-md);
  }

  .card-title {
    font-size: var(--text-base);
  }

  .card-subtitle {
    font-size: var(--text-xs);
  }

  /* -- Buttons: ensure 44px tap zone -- */
  .btn {
    min-height: 44px;
    padding: 10px 16px;
    font-size: var(--text-sm);
  }

  .btn-sm {
    min-height: 40px;
    padding: 8px 14px;
    font-size: var(--text-xs);
  }

  .btn-lg {
    padding: 14px 24px;
    font-size: var(--text-base);
  }

  /* -- Forms: touch-friendly sizing -- */
  .form-input,
  .form-select,
  .form-textarea {
    padding: 12px 14px;
    font-size: 1rem;
    min-height: 44px;
  }

  .form-label {
    font-size: var(--text-sm);
  }

  /* -- Login -- */
  .login-card {
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    margin: 0 var(--space-sm);
  }

  .login-header h1 {
    font-size: var(--text-xl);
  }

  .login-header .brand-icon {
    width: 48px;
    height: 48px;
    font-size: var(--text-xl);
  }

  /* -- Stats Row -- */
  .stats-row {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
  }

  .stat-card {
    padding: var(--space-md);
  }

  .stat-value {
    font-size: var(--text-xl);
  }

  .stat-label {
    font-size: 0.65rem;
  }

  /* -- Submissions Table -- */
  .submissions-table {
    font-size: var(--text-xs);
  }

  .submissions-table th,
  .submissions-table td {
    padding: var(--space-sm);
  }

  /* -- Admin Tabs: wrapped (No Horizontal Scroll) -- */
  .admin-tabs {
    flex-wrap: wrap;
    overflow-x: visible;
    padding: var(--space-xs);
    gap: var(--space-xs);
  }

  .admin-tabs::-webkit-scrollbar {
    display: none;
  }

  .admin-tab {
    padding: 8px 12px;
    font-size: var(--text-xs);
    white-space: normal;
    text-align: center;
    min-height: 40px;
    flex: 1 1 auto;
    /* Fill available row space naturally */
  }

  .admin-header-flex {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
  }

  .action-btns {
    width: 100%;
  }

  .action-btns .btn {
    flex: 1;
  }

  /* -- Modals -- */
  .modal-container {
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    max-height: 85vh;
    max-width: 100%;
    margin: var(--space-sm);
  }

  .modal-header {
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
  }

  .modal-title {
    font-size: var(--text-lg);
  }

  .modal-close {
    min-width: 44px;
    min-height: 44px;
  }

  /* -- Test Layout -- */
  .test-layout {
    flex-direction: column;
    gap: var(--space-md);
  }

  .test-container-wrapper,
  .assignments-container-wrapper {
    margin-top: var(--space-2xl);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
  }

  .question-block {
    padding: var(--space-md);
    border-radius: var(--radius-md);
  }

  .question-text {
    font-size: var(--text-sm);
    line-height: 1.5;
  }

  .test-actions {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .test-actions .btn {
    width: 100%;
  }

  /* -- Mage intro block -- */
  .mage-intro-block {
    flex-direction: column;
    text-align: center;
    gap: var(--space-md);
    padding: var(--space-lg);
  }

  .mage-avatar-big {
    width: 80px;
    height: 80px;
    font-size: 2.5rem;
  }

  .mage-intro-content h3 {
    font-size: var(--text-lg);
  }

  .mage-intro-content p {
    font-size: var(--text-sm);
  }

  /* -- Roadmap -- */
  .roadmap-horizontal {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: var(--space-sm);
    padding-bottom: var(--space-sm);
    margin-bottom: var(--space-md);
  }

  .roadmap-item {
    font-size: var(--text-xs);
    padding-right: var(--space-sm);
  }

  .roadmap-dot {
    width: 14px;
    height: 14px;
  }

  /* -- Mage Top Container -- */
  .mage-top-container {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
  }

  /* Override inline styles on mage avatar inside question blocks */
  .mage-top-container>.mage-avatar-big {
    width: 60px !important;
    height: 60px !important;
    font-size: 1.8rem !important;
  }

  .mage-top-container>.mage-avatar-big>.mage-avatar-big {
    width: 50px !important;
    height: 50px !important;
    font-size: 1.5rem !important;
  }

  /* Override inline styles on hint bubble */
  .mage-hint-bubble-top {
    font-size: var(--text-xs) !important;
    padding: var(--space-sm) var(--space-md) !important;
    border: none !important;
    box-shadow: none !important;
  }

  .mage-hint-bubble-top h3 {
    font-size: var(--text-base) !important;
    margin-bottom: var(--space-xs) !important;
  }

  .mage-hint-bubble-top p {
    font-size: var(--text-sm) !important;
    line-height: 1.5 !important;
    margin-bottom: var(--space-md) !important;
  }

  .question-text {
    font-size: var(--text-lg);
    font-weight: 500;
    line-height: 1.5;
    word-break: break-word;
    margin-bottom: var(--space-md);
  }

  /* Test slider - ensure proper sizing */
  .test-slider-wrapper {
    overflow: hidden;
    width: 100%;
  }

  .test-slider-track {
    width: 100%;
  }

  /* Code input mobile */
  .code-textarea {
    width: 100% !important;
    min-height: 80px;
    font-size: var(--text-sm) !important;
    box-sizing: border-box;
  }

  .code-input-container {
    width: 100%;
  }

  /* -- Choice Cards -- */
  .choice-card {
    padding: var(--space-sm) var(--space-md);
    min-height: 36px;
  }

  .choice-checkbox {
    width: 20px;
    height: 20px;
    margin-right: var(--space-sm);
  }

  .choice-text {
    font-size: var(--text-sm);
    line-height: 1.4;
  }

  /* -- Lesson Content -- */
  .lesson-content {
    font-size: 1rem;
    line-height: 1.8;
    padding: var(--space-sm) var(--space-md);
  }

  .lesson-content h1 {
    font-size: var(--text-3xl);
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
    line-height: 1.3;
  }

  .lesson-content h2 {
    font-size: 1.15rem;
  }

  .lesson-content h3 {
    font-size: 1.05rem;
  }

  .lesson-content pre {
    font-size: 0.8rem;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .lesson-content table {
    font-size: var(--text-xs);
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .lesson-content img {
    border-radius: var(--radius-sm);
    margin: var(--space-md) 0;
  }

  /* -- Lesson items -- */
  .lesson-item {
    padding: var(--space-md);
    min-height: 44px;
    flex-wrap: wrap;
    /* NEW: Avoid scroll issue by wrapping elements */
  }

  .lesson-item .lesson-info {
    min-width: 150px;
    word-break: break-word;
    /* NEW: ensure very long emails break properly */
  }

  /* Make buttons full width on small screens inside list items */
  .lesson-item .action-btns {
    width: 100%;
    margin-top: var(--space-sm);
    flex-wrap: wrap;
  }

  .lesson-item .action-btns .btn {
    flex: 1;
  }

  .lesson-num {
    width: 24px;
    height: 24px;
    font-size: var(--text-xs);
  }

  /* -- Assignment -- */
  .assignment-card {
    padding: var(--space-md);
  }

  .assignment-meta {
    font-size: 0.65rem;
    gap: var(--space-sm);
  }

  /* -- Section Title -- */
  .section-title {
    font-size: var(--text-lg);
    margin-bottom: var(--space-md);
  }

  #page-lesson>.breadcrumbs,
  #page-lesson>.page-header,
  #page-lesson>.section-title,
  #page-lesson>#lesson-assignments,
  #page-lesson>.test-container-wrapper,
  #page-lesson>.assignments-container-wrapper {
    max-width: 100%;
  }

  /* -- Markdown Editor -- */
  .md-editor-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .md-editor-actions {
    justify-content: flex-end;
  }

  .md-editor-textarea {
    min-height: 300px;
    font-size: var(--text-xs);
  }

  /* -- Toast -- */
  .toast-container {
    left: var(--space-sm);
    right: var(--space-sm);
    top: auto;
    bottom: var(--space-lg);
  }

  .toast {
    font-size: var(--text-xs);
    padding: var(--space-sm) var(--space-md);
  }

  /* -- Empty State -- */
  .empty-state {
    padding: var(--space-xl) var(--space-md);
  }

  .empty-state-icon {
    font-size: 2rem;
  }

  /* -- Breadcrumbs -- */
  .breadcrumbs {
    font-size: var(--text-xs);
    flex-wrap: wrap;
    gap: var(--space-xs);
  }

  /* -- Theme Toggle -- */
  .theme-toggle {
    width: 40px;
    height: 40px;
  }

  /* Disable heavy stagger animations on mobile */
  .grid>* {
    animation: fadeIn 0.3s ease backwards !important;
    animation-delay: 0ms !important;
  }

  /* Disable decorative body::before gradient on mobile for perf */
  body::before {
    display: none;
  }

  /* Hall of Fame layout — stack vertically */
  .hof-layout {
    flex-direction: column;
  }

  .hof-sidebar {
    width: 100%;
    order: 2;
  }

  .hof-main {
    width: 100%;
    order: 1;
  }

  /* Badges grid — 3 columns */
  .badges-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
  }

  /* Muggle skip block */
  .muggle-block {
    padding: var(--space-md) !important;
    margin-top: var(--space-lg) !important;
  }
}

/* ====== BREAKPOINT: max-width 480px (Large phones) ====== */
@media (max-width: 480px) {
  .page-header h1 {
    font-size: var(--text-lg);
  }

  .page-header p {
    font-size: var(--text-xs);
  }

  .stats-row {
    grid-template-columns: 1fr 1fr;
  }

  .stat-value {
    font-size: var(--text-lg);
  }

  .login-card {
    padding: var(--space-md);
    margin: 0 var(--space-xs);
  }

  .login-header h1 {
    font-size: var(--text-lg);
  }

  .card {
    padding: var(--space-sm);
  }

  .test-container-wrapper,
  .assignments-container-wrapper {
    margin-top: var(--space-xl);
  }

  .choice-card {
    padding: var(--space-sm) var(--space-md);
  }

  .modal-container {
    padding: var(--space-md);
    margin: var(--space-xs);
    border-radius: var(--radius-md);
  }

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

  .admin-tabs {
    gap: 1px;
  }

  .admin-tab {
    padding: 6px 10px;
    font-size: 0.65rem;
  }
}

/* ====== BREAKPOINT: max-width 375px (Standard phones) ====== */
@media (max-width: 375px) {
  :root {
    --space-md: 12px;
    --space-lg: 16px;
    --space-xl: 24px;
    --space-2xl: 32px;
  }

  .navbar-brand {
    font-size: var(--text-sm);
    gap: var(--space-xs);
  }

  .navbar-brand .brand-icon {
    width: 24px;
    height: 24px;
    font-size: var(--text-sm);
  }

  .page-header h1 {
    font-size: var(--text-base);
  }

  .section-title {
    font-size: var(--text-base);
  }

  .lesson-content {
    font-size: 0.9rem;
  }

  .lesson-content h1 {
    font-size: 1.2rem;
  }

  .lesson-content h2 {
    font-size: 1.05rem;
  }

  .mage-avatar-big {
    width: 64px;
    height: 64px;
    font-size: 2rem;
  }

  .roadmap-item {
    font-size: 0.65rem;
  }

  .roadmap-dot {
    width: 12px;
    height: 12px;
  }
}

/* ====== BREAKPOINT: max-width 320px (Smallest phones) ====== */
@media (max-width: 320px) {
  .navbar {
    padding: var(--space-xs) var(--space-sm);
  }

  .navbar-brand {
    font-size: var(--text-xs);
  }

  .nav-user {
    gap: 2px;
  }

  .theme-toggle {
    width: 36px;
    height: 36px;
    font-size: var(--text-sm);
  }

  .page-header h1 {
    font-size: var(--text-sm);
    word-break: break-word;
  }

  .btn {
    font-size: var(--text-xs);
    padding: 8px 12px;
  }

  .stats-row {
    grid-template-columns: 1fr;
  }

  .stat-value {
    font-size: var(--text-base);
  }

  .card {
    border-radius: var(--radius-sm);
  }

  .submissions-table th,
  .submissions-table td {
    padding: var(--space-xs);
    font-size: 0.65rem;
  }

  .choice-card {
    padding: var(--space-sm);
  }

  .choice-checkbox {
    width: 24px;
    height: 24px;
  }

  .choice-text {
    font-size: var(--text-xs);
  }

  .modal-overlay {
    padding: var(--space-xs);
  }

  .modal-container {
    padding: var(--space-sm);
    margin: 0;
    border-radius: var(--radius-sm);
  }
}


/* ----- Utility ----- */
.hidden {
  display: none !important;
}

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.mt-sm {
  margin-top: var(--space-sm);
}

.mt-md {
  margin-top: var(--space-md);
}

.mt-lg {
  margin-top: var(--space-lg);
}

.mb-md {
  margin-bottom: var(--space-md);
}

.mb-lg {
  margin-bottom: var(--space-lg);
}

.flex {
  display: flex;
}

.flex-wrap {
  flex-wrap: wrap;
}

.gap-sm {
  gap: var(--space-sm);
}

.gap-md {
  gap: var(--space-md);
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.w-full {
  width: 100%;
}

.overflow-x-auto {
  overflow-x: auto;
}


/* ----- Markdown Editor (Teacher inline edit) ----- */
.md-edit-trigger {
  margin-top: var(--space-md);
}

.lesson-content--editing {
  padding: 0 !important;
  background: transparent !important;
  border: none !important;
}

.md-editor {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-card);
}

.md-editor-tabs {
  display: flex;
  background: var(--bg-glass);
  border-bottom: 1px solid var(--border-color);
  padding: var(--space-xs) var(--space-xs) 0;
}

.md-editor-tab {
  padding: 10px 20px;
  background: transparent;
  border: 1px solid transparent;
  border-bottom: none;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  bottom: -1px;
}

.md-editor-tab:hover {
  color: var(--text-primary);
  background: var(--bg-glass-hover);
}

.md-editor-tab.active {
  color: var(--text-primary);
  background: var(--bg-card);
  border-color: var(--border-color);
  border-bottom-color: var(--bg-card);
  font-weight: 600;
}

.md-editor-body {
  min-height: 400px;
}

.md-editor-pane {
  height: 100%;
}

.md-editor-textarea {
  width: 100%;
  min-height: 400px;
  padding: var(--space-lg);
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.7;
  resize: vertical;
  outline: none;
  box-sizing: border-box;
}

.md-editor-textarea::placeholder {
  color: var(--text-muted);
}

.md-preview-content {
  padding: var(--space-xl) !important;
  margin: 0 !important;
  border: none !important;
  border-radius: 0 !important;
  max-width: none !important;
  min-height: 400px;
}

.md-editor-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--border-color);
  background: var(--bg-glass);
}

.md-editor-hint {
  font-size: var(--text-xs);
  color: var(--text-muted);
  line-height: 1.6;
}

.md-editor-hint code {
  font-family: var(--font-mono);
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  padding: 1px 5px;
  border-radius: var(--radius-sm);
  font-size: 0.85em;
  color: var(--text-accent);
}

.md-editor-actions {
  display: flex;
  gap: var(--space-sm);
  flex-shrink: 0;
}


/* ============================================
   Test Container Separation & Interactive Cards
   ============================================ */

.test-container-wrapper,
.assignments-container-wrapper {
  margin-top: var(--space-3xl);
  padding: var(--space-2xl);
  background: var(--bg-card);
  border: 1px solid var(--accent-primary);
  border-radius: var(--radius-xl);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  position: relative;
  z-index: 5;
}

hr.section-divider {
  display: none;
  /* Hide default hr since we use the card wrapper */
}

/* Choice Cards (Interactive Option A) */

.choice-cards {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  position: relative;
  z-index: 10;
}

.choice-card {
  display: flex;
  align-items: center;
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-glass);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.choice-card:hover {
  border-color: var(--accent-primary);
  background: var(--bg-glass-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.choice-card.selected {
  border-color: var(--warning);
  background: rgba(245, 158, 11, 0.05);
  /* warning color alpha */
  transform: scale(1.03);
  box-shadow: 0 8px 20px rgba(245, 158, 11, 0.15);
  z-index: 2;
}

.choice-card.correct {
  border-color: var(--success);
  background: rgba(16, 185, 129, 0.1);
  transform: scale(1.03);
  box-shadow: 0 8px 20px rgba(16, 185, 129, 0.15);
  z-index: 3;
}

.choice-card.incorrect {
  border-color: var(--danger);
  background: rgba(239, 68, 68, 0.05);
  animation: shake 0.4s ease;
  z-index: 2;
}

.choice-checkbox {
  width: 24px;
  height: 24px;
  border: 2px solid var(--text-muted);
  border-radius: var(--radius-sm);
  margin-right: var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  flex-shrink: 0;
  background: var(--bg-card);
}

.choice-card:hover .choice-checkbox {
  border-color: var(--accent-primary);
}

.choice-card.selected .choice-checkbox {
  border-color: var(--warning);
  background: var(--warning);
}

.choice-card.correct .choice-checkbox {
  border-color: var(--success);
  background: var(--success);
}

.choice-card.incorrect .choice-checkbox {
  border-color: var(--danger);
  background: var(--danger);
}

.choice-checkbox .check-icon {
  color: white;
  font-size: 14px;
  font-weight: bold;
  opacity: 0;
  transform: scale(0.5);
  transition: all 0.2s ease;
}

.choice-card.selected .choice-checkbox .check-icon,
.choice-card.correct .choice-checkbox .check-icon {
  opacity: 1;
  transform: scale(1);
}

.choice-card.incorrect .choice-checkbox .check-icon {
  content: "X";
  /* Fallback if we stay with check-icon span, we just let it show the check or not, or change it via JS. Here we leave icon as is but color might differ if needed. Actually, simpler: */
  opacity: 1;
  transform: scale(1);
}

.choice-text {
  font-size: var(--text-base);
  color: var(--text-primary);
  font-weight: 500;
  flex-grow: 1;
}

/* Roadmap Statuses */
.roadmap-item.completed-success .roadmap-dot {
  background: var(--success);
  border-color: var(--success);
}

.roadmap-item.completed-success span {
  color: var(--success);
}

.roadmap-item.completed-failed .roadmap-dot {
  background: var(--danger);
  border-color: var(--danger);
}

.roadmap-item.completed-failed span {
  color: var(--danger);
}

.roadmap-item.pending .roadmap-dot {
  background: var(--warning);
  border-color: var(--warning);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.2);
}

.roadmap-item.pending span {
  color: var(--warning);
}

.roadmap-item.pending:hover,
.roadmap-item.completed-success:hover,
.roadmap-item.completed-failed:hover {
  transform: scale(1.08);
}

.roadmap-item.pending:hover span,
.roadmap-item.completed-success:hover span,
.roadmap-item.completed-failed:hover span {
  text-decoration: underline;
}

/* Mage Top Container and Bubble */
.mage-top-container {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px dashed var(--border-color);
}

.mage-hint-bubble-top {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-lg);
  border-top-left-radius: 4px;
  box-shadow: var(--shadow-md);
  color: var(--text-primary);
  font-size: var(--text-sm);
  position: relative;
  opacity: 0;
  transform: translateX(-10px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
  flex: 1;
}

.mage-hint-bubble-top::before {
  display: none;
}

.mage-hint-bubble-top.visible {
  opacity: 1;
  transform: translateX(0);
}


/* Hall of Fame styles moved to components/leaderboard.css */

/* ============================================
   UTILITY CLASSES — Eliminate inline styles
   ============================================ */

/* Password toggle button */
.password-toggle-btn {
  position: absolute;
  right: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  padding: var(--space-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.7;
  outline: none;
  transition: opacity 0.2s;
  z-index: 20;
}

.password-toggle-btn:hover {
  opacity: 1;
}

.form-input--with-icon {
  padding-right: 40px;
}

.input-wrapper {
  position: relative;
}

/* Modal size variants */
.modal-container--wide {
  max-width: 800px;
}

.modal-container--narrow {
  max-width: 600px;
}

/* Muggle block */
.muggle-block {
  margin-top: var(--space-xl);
  padding: var(--space-md);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  text-align: center;
}

.muggle-block p {
  margin-bottom: var(--space-md);
  color: var(--text-muted);
}

/* Section groups on dashboard */
.section-group {
  margin-bottom: var(--space-xl);
}

.section-title--flush {
  margin-bottom: 0;
  margin-top: 0;
}

.section-desc {
  color: var(--text-muted);
  font-size: var(--text-sm);
  margin-top: var(--space-sm);
  margin-bottom: var(--space-md);
}

.section-divider-line {
  border-bottom: 1px solid var(--border-color);
  margin-bottom: var(--space-md);
}

/* Module description */
.module-desc {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-bottom: var(--space-sm);
}

/* Lesson item variants */
.lesson-item--has-progress {
  padding-bottom: calc(var(--space-md) + 4px);
}

.lesson-item--locked {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

.lesson-desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-top: var(--space-xs);
}

.lesson-progress-meta {
  margin-left: var(--space-sm);
  opacity: 0.8;
}

.lesson-arrow {
  color: var(--text-muted);
  font-size: var(--text-xs);
  align-self: center;
  margin-left: auto;
}

.lesson-header-desc {
  font-size: var(--text-lg);
  color: var(--text-muted);
  margin-top: var(--space-sm);
}

/* Submitted badge spacing */
.badge--ml {
  margin-left: var(--space-sm);
}

/* No-padding card */
.card--no-padding {
  padding: 0;
}

/* Mage avatar variants for questions */
.mage-avatar-big--question {
  width: 100px;
  height: 100px;
  font-size: var(--text-4xl);
  cursor: pointer;
  border: none;
  background: transparent;
  box-shadow: none;
}

.mage-avatar-big--result {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-lg);
}

/* Mage hint bubble — transparent variant */
.mage-hint-bubble-top--transparent {
  padding-left: var(--space-xl);
  border: none;
  box-shadow: none;
  background: transparent;
  pointer-events: auto;
}

/* Mage message title */
.mage-message-title {
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

/* Test result block */
.test-result-block {
  text-align: center;
  flex-direction: column;
  width: 100%;
  grid-column: 1 / -1;
}

.test-result-title {
  margin-bottom: var(--space-md);
  font-size: var(--text-2xl);
}

.test-result-subtitle {
  margin-bottom: var(--space-md);
  color: var(--text-secondary);
}

.test-result-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  margin: var(--space-xl) 0;
  flex-wrap: wrap;
}

.test-result-stat {
  text-align: center;
}

.test-result-stat-value {
  font-size: var(--text-3xl);
  font-weight: 800;
}

.test-result-stat-label {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.test-result-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* Test layout vertical */
.test-layout--vertical {
  flex-direction: column;
  width: 100%;
}

/* Feedback text */
.feedback-correct {
  color: var(--success);
  font-weight: 600;
}

/* Roadmap clickable states */
.roadmap-item--clickable {
  cursor: pointer;
}

.roadmap-item--disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

/* Admin inline styles */
.user-avatar--sm {
  width: 28px;
  height: 28px;
  font-size: var(--text-xs);
}

.form-input--grade {
  width: 80px;
  padding: var(--space-xs) var(--space-sm);
}

.form-input--comment {
  min-width: 120px;
  padding: var(--space-xs) var(--space-sm);
}

.table-cell--truncate {
  max-width: 200px;
  word-break: break-all;
}

.text-muted-sm {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.text-danger {
  color: var(--danger);
}

.text-muted-block {
  color: var(--text-muted);
  font-size: var(--text-sm);
}

/* Test slider */
.test-slider-wrapper {
  overflow: hidden;
  width: 100%;
  position: relative;
}

.test-slider-track {
  display: flex;
  transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  width: 100%;
}

.question-block {
  flex: 0 0 100%;
  width: 100%;
}

/* Roadmap horizontal margin */
.roadmap-horizontal {
  margin-bottom: var(--space-xl);
}

/* Spacing utilities */
.mt-md {
  margin-top: var(--space-md);
}

.mb-md {
  margin-bottom: var(--space-md);
}

.mb-lg {
  margin-bottom: var(--space-xl);
}

/* ============================================
   Mobile Optimization for Tests
   ============================================ */
@media (max-width: 768px) {

  /* 1. Адаптивность и общий контейнер */
  .test-container-wrapper,
  .assignments-container-wrapper {
    padding: 0;
    margin-top: var(--space-md);
    border: none;
    box-shadow: none;
    background: transparent;
  }

  /* 2. Отдельная карточка теста */
  .question-block {
    padding: 16px 12px;
    border-radius: 12px;
    width: 100%;
    box-sizing: border-box;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  }

  /* 3. Оформление вопроса */
  .question-header {
    margin-bottom: 16px;
  }

  .question-text {
    font-size: 16px;
    line-height: 1.4;
    width: 100%;
    word-wrap: break-word;
    font-weight: 600;
  }

  /* 4. Варианты ответа как крупные кнопки */
  .choice-cards {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .choice-card {
    min-height: 44px;
    padding: 10px 14px;
    border-radius: 12px;
    width: 100%;
    box-sizing: border-box;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--border-color);
    margin: 0;
  }

  /* Скрыть чекбокс, чтобы карточка работала как одна большая кнопка */
  .choice-checkbox {
    display: none !important;
  }

  .choice-text {
    font-size: 14px;
    text-align: center;
    width: 100%;
    font-weight: 600;
  }

  /* Усиленные визуальные индикаторы для мобильных */
  .choice-card.selected {
    background: rgba(245, 158, 11, 0.1);
    border-color: var(--warning);
    transform: scale(1);
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.15);
  }

  .choice-card.correct {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--success);
    transform: scale(1);
  }

  .choice-card.incorrect {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--danger);
  }

  /* 5. Кнопки действий (Готово/Далее/Сдаться) */
  .test-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 16px;
    padding-top: 12px;
    border-top: 1px dashed var(--border-color);
  }

  .test-actions .btn {
    width: 100%;
    min-height: 44px;
    font-size: 15px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    font-weight: 700;
  }

  /* Меняем порядок: Кнопку "Сдаться" опускаем в самый низ */
  .test-actions .btn-primary {
    order: 1;
    /* Готово / Попробовать снова будет сверху */
  }

  .test-actions .btn-success {
    order: 2;
    /* Далее будет сверху (когда Готово скрыто) */
  }

  .test-actions .btn-secondary {
    order: 3;
    /* Сдаться всегда снизу */
  }

  /* Структура шапки (Кодальф) на мобильных */
  .mage-top-container {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 8px;
    margin-bottom: 12px;
    padding-bottom: 12px;
  }

  .mage-avatar-big--question,
  .mage-avatar-big--question .mage-avatar-big {
    width: 56px !important;
    height: 56px !important;
    font-size: 2rem !important;
  }

  .mage-hint-bubble-top {
    width: 100%;
    text-align: center;
    padding: 8px 12px !important;
  }

  .mage-hint-bubble-top h3 {
    font-size: 15px !important;
    margin-bottom: 4px !important;
  }

  .mage-hint-bubble-top p {
    font-size: 13px !important;
    line-height: 1.3 !important;
    margin-bottom: 0 !important;
  }

  .mage-hint-bubble-top--transparent {
    padding-left: 0;
  }

  /* Навигация (Roadmap) в виде адаптивной сетки (Grid) */
  .roadmap-horizontal {
    display: grid;
    /* Автоматическое заполнение колонок. Минимальная ширина карточки 130px, максимум растягивается (1fr) */
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 12px;
    padding: 8px 0;
    margin-bottom: 20px;
    /* Убираем горизонтальный скролл */
    overflow-x: hidden;
    width: 100%;
    /* Сброс базовых стилей для flex, которые были заданы глобально */
    flex-wrap: unset;
    border-bottom: none;
  }

  /* Карточка вопроса (каждый пункт в Roadmap) */
  .roadmap-item {
    width: 100%;
    padding: 10px 12px;
    margin: 0;
    min-width: 0;
    box-sizing: border-box;
    justify-content: flex-start;

    /* Стилизация под отдельную карточку */
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
  }

  /* Активная карточка */
  .roadmap-item.active {
    background: rgba(59, 130, 246, 0.05);
    /* Легкий акцентный фон */
    border-color: var(--accent-primary);
  }

  /* Успешная/проваленная карточка - фон под цвет статуса */
  .roadmap-item.completed-success {
    background: rgba(16, 185, 129, 0.05);
    border-color: rgba(16, 185, 129, 0.3);
  }

  .roadmap-item.completed-failed {
    background: rgba(239, 68, 68, 0.05);
    border-color: rgba(239, 68, 68, 0.3);
  }

  /* Корректировка размеров индикатора и текста */
  .roadmap-dot {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
    /* Чтобы точка не сжималась */
  }

  .roadmap-item span {
    font-size: 13px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
}