/* ==========================================================================
   AMR NOW E-LIBRARY - LMS COURSE PLAYER STYLES (learn.css)
   Exact match to modern Masteriyo learning player with AMR branding
   ========================================================================== */

:root {
  --lms-bg: #f8fafc;
  --lms-surface: #ffffff;
  --lms-text: #1e293b;
  --lms-text-muted: #64748b;
  --lms-border: #e2e8f0;
  --lms-primary: #1d72b8;
  --lms-primary-hover: #155d97;
  --lms-primary-soft: #e0f2fe;
  --lms-success: #10b981;
  --lms-success-soft: #d1fae5;
  --lms-brand-dark: #072a4a;
  --lms-brand-gold: #ff9900;
  --lms-sidebar-w: 380px;
  --lms-header-h: 68px;
  --lms-footer-h: 72px;
  --lms-radius: 12px;
}

body.dark-mode {
  --lms-bg: #0f172a;
  --lms-surface: #1e293b;
  --lms-text: #f1f5f9;
  --lms-text-muted: #94a3b8;
  --lms-border: #334155;
  --lms-primary-soft: #1e3a5f;
  --lms-success-soft: #064e3b;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body.lms-player-body {
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--lms-bg);
  color: var(--lms-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  transition: background-color 0.25s ease, color 0.25s ease;
}

/* --------------------------------------------------------------------------
   Top Bar
   -------------------------------------------------------------------------- */
.lms-topbar {
  height: var(--lms-header-h);
  background: var(--lms-surface);
  border-bottom: 1px solid var(--lms-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.lms-topbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.lms-logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.lms-logo-img {
  width: 44px;
  height: 44px;
  object-fit: contain;
}

.lms-brand-name {
  font-family: 'Quicksand', sans-serif;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--lms-brand-dark);
  line-height: 1.1;
}

body.dark-mode .lms-brand-name {
  color: #f8fafc;
}

.lms-brand-sub {
  font-family: 'Fasthand', cursive;
  font-size: 0.95rem;
  color: var(--lms-brand-gold);
  display: block;
}

.lms-topbar-center {
  flex: 1;
  max-width: 520px;
  margin: 0 32px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.lms-progress-labels {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  font-weight: 600;
}

.lms-progress-percent {
  color: var(--lms-primary);
  font-family: 'Oswald', sans-serif;
  font-size: 0.95rem;
  letter-spacing: 0.5px;
}

.lms-progress-count {
  color: var(--lms-text-muted);
  font-size: 0.82rem;
}

.lms-progress-bar-track {
  width: 100%;
  height: 8px;
  background: var(--lms-border);
  border-radius: 99px;
  overflow: hidden;
  position: relative;
}

.lms-progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #1d72b8 0%, #38bdf8 100%);
  border-radius: 99px;
  width: 0%;
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.lms-topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lms-icon-btn {
  background: none;
  border: 1px solid var(--lms-border);
  color: var(--lms-text);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  font-size: 0.95rem;
}

.lms-icon-btn:hover {
  background: var(--lms-border);
  color: var(--lms-primary);
}

.lms-user-btn {
  background: var(--lms-primary-soft);
  color: var(--lms-primary);
  border: 1px solid transparent;
  padding: 8px 16px;
  border-radius: 99px;
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s;
}

.lms-user-btn:hover {
  background: var(--lms-primary);
  color: #fff;
}

.lms-exit-btn {
  background: transparent;
  border: 1px solid var(--lms-border);
  color: var(--lms-text-muted);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  transition: all 0.2s;
}

.lms-exit-btn:hover {
  background: #fee2e2;
  color: #ef4444;
  border-color: #fca5a5;
}

/* --------------------------------------------------------------------------
   Player Layout (Sidebar + Stage)
   -------------------------------------------------------------------------- */
.lms-container {
  display: flex;
  flex: 1;
  position: relative;
  min-height: calc(100vh - var(--lms-header-h) - var(--lms-footer-h));
}

/* Sidebar */
.lms-sidebar {
  width: var(--lms-sidebar-w);
  background: var(--lms-surface);
  border-right: 1px solid var(--lms-border);
  display: flex;
  flex-direction: column;
  height: calc(100vh - var(--lms-header-h) - var(--lms-footer-h));
  position: sticky;
  top: var(--lms-header-h);
  z-index: 50;
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), width 0.3s ease;
}

.lms-sidebar-header {
  padding: 18px 20px;
  border-bottom: 1px solid var(--lms-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.lms-sidebar-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--lms-text);
  text-decoration: none;
  font-family: 'Poppins', sans-serif;
  transition: color 0.2s;
}

.lms-sidebar-back:hover {
  color: var(--lms-primary);
}

.lms-sidebar-close-btn {
  background: none;
  border: none;
  color: var(--lms-text-muted);
  cursor: pointer;
  font-size: 1.1rem;
  padding: 4px;
}

.lms-curriculum-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 12px 0;
}

.lms-section-group {
  margin-bottom: 8px;
}

.lms-section-header {
  width: 100%;
  background: transparent;
  border: none;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-family: 'Poppins', sans-serif;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--lms-text);
  transition: background-color 0.2s;
  text-align: left;
}

.lms-section-header:hover {
  background-color: rgba(29, 114, 184, 0.05);
}

.lms-section-header.active {
  color: var(--lms-primary);
}

.lms-section-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--lms-text-muted);
}

.lms-section-icon {
  transition: transform 0.2s;
  font-size: 0.75rem;
}

.lms-section-header[aria-expanded="true"] .lms-section-icon {
  transform: rotate(180deg);
}

.lms-lessons-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.lms-lessons-list.collapsed {
  display: none;
}

.lms-lesson-item {
  width: 100%;
  background: transparent;
  border: none;
  padding: 12px 20px 12px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  font-family: 'Poppins', sans-serif;
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--lms-text-muted);
  text-align: left;
  border-left: 3px solid transparent;
  transition: all 0.2s;
}

.lms-lesson-item:hover {
  background: rgba(0, 0, 0, 0.02);
  color: var(--lms-text);
}

body.dark-mode .lms-lesson-item:hover {
  background: rgba(255, 255, 255, 0.04);
}

.lms-lesson-item.active {
  background: var(--lms-primary-soft);
  color: var(--lms-primary);
  border-left-color: var(--lms-primary);
  font-weight: 600;
}

.lms-lesson-info {
  display: flex;
  align-items: center;
  gap: 10px;
  overflow: hidden;
}

.lms-lesson-type-icon {
  font-size: 0.9rem;
  flex-shrink: 0;
}

.lms-lesson-name {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.lms-check-indicator {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--lms-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.2s;
}

.lms-lesson-item.completed .lms-check-indicator {
  background: var(--lms-success);
  border-color: var(--lms-success);
  color: #fff;
}

.lms-lesson-item.completed .lms-check-indicator::after {
  content: '✓';
  font-size: 11px;
  font-weight: 700;
}

/* Sidebar Footer Tabs */
.lms-sidebar-footer-tabs {
  border-top: 1px solid var(--lms-border);
  display: flex;
  background: var(--lms-surface);
}

.lms-sidebar-tab {
  flex: 1;
  padding: 14px 10px;
  border: none;
  background: none;
  font-family: 'Poppins', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--lms-text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s;
  border-bottom: 2px solid transparent;
}

.lms-sidebar-tab.active {
  color: var(--lms-primary);
  border-bottom-color: var(--lms-primary);
  background: rgba(29, 114, 184, 0.04);
}

/* --------------------------------------------------------------------------
   Stage / Main View
   -------------------------------------------------------------------------- */
.lms-stage {
  flex: 1;
  padding: 32px 40px;
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.lms-stage.wide-mode {
  max-width: 100%;
}

.lms-card {
  background: var(--lms-surface);
  border: 1px solid var(--lms-border);
  border-radius: var(--lms-radius);
  padding: 36px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
}

.lms-lesson-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.lms-lesson-title {
  font-family: 'Quicksand', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--lms-text);
  line-height: 1.25;
}

.lms-widescreen-toggle {
  background: none;
  border: 1px solid var(--lms-border);
  color: var(--lms-text-muted);
  width: 36px;
  height: 36px;
  border-radius: 8px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.lms-widescreen-toggle:hover {
  color: var(--lms-primary);
  border-color: var(--lms-primary);
}

/* Video Wrapper */
.lms-video-wrapper {
  width: 100%;
  background: #000;
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  aspect-ratio: 16 / 9;
  margin-bottom: 28px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.lms-video-player {
  width: 100%;
  height: 100%;
  object-fit: contain;
  outline: none;
}

/* Tabs Inside Stage */
.lms-tabs-nav {
  display: flex;
  gap: 24px;
  border-bottom: 2px solid var(--lms-border);
  margin-bottom: 24px;
}

.lms-tab-link {
  background: none;
  border: none;
  padding: 10px 0;
  font-family: 'Poppins', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--lms-text-muted);
  cursor: pointer;
  position: relative;
  bottom: -2px;
  border-bottom: 3px solid transparent;
  transition: all 0.2s;
}

.lms-tab-link.active {
  color: var(--lms-primary);
  border-bottom-color: var(--lms-primary);
}

/* Lesson Notes / Content */
.lms-notes-body {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--lms-text);
}

.lms-notes-body h3 {
  font-family: 'Quicksand', sans-serif;
  font-size: 1.45rem;
  font-weight: 700;
  margin: 20px 0 12px;
  color: var(--lms-text);
}

.lms-notes-body h4 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 16px 0 8px;
}

.lms-notes-body p {
  margin-bottom: 16px;
}

.lms-notes-body ol,
.lms-notes-body ul {
  margin-bottom: 20px;
  padding-left: 24px;
}

.lms-notes-body li {
  margin-bottom: 10px;
}

.lms-notes-body strong {
  font-weight: 600;
  color: var(--lms-text);
}

.lms-notes-body code {
  background: rgba(0,0,0,0.06);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'Courier New', monospace;
  font-size: 0.9em;
}

body.dark-mode .lms-notes-body code {
  background: rgba(255,255,255,0.1);
}

/* Quiz UI */
.lms-quiz-card {
  background: var(--lms-surface);
  border: 1px solid var(--lms-border);
  border-radius: var(--lms-radius);
  padding: 28px;
  margin-top: 16px;
}

.lms-quiz-question {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--lms-text);
}

.lms-quiz-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.lms-quiz-option {
  padding: 14px 18px;
  border: 1px solid var(--lms-border);
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  transition: all 0.2s;
  background: var(--lms-bg);
}

.lms-quiz-option:hover {
  border-color: var(--lms-primary);
  background: var(--lms-primary-soft);
}

.lms-quiz-option.selected {
  border-color: var(--lms-primary);
  background: var(--lms-primary-soft);
  color: var(--lms-primary);
  font-weight: 600;
}

.lms-quiz-option.correct {
  border-color: var(--lms-success);
  background: var(--lms-success-soft);
  color: var(--lms-success);
  font-weight: 600;
}

.lms-quiz-option.incorrect {
  border-color: #ef4444;
  background: #fee2e2;
  color: #ef4444;
}

.lms-quiz-btn {
  background: var(--lms-primary);
  color: #fff;
  border: none;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s;
}

.lms-quiz-btn:hover {
  background: var(--lms-primary-hover);
}

.lms-quiz-explanation {
  margin-top: 20px;
  padding: 16px;
  background: var(--lms-primary-soft);
  border-left: 4px solid var(--lms-primary);
  border-radius: 4px;
  font-size: 0.92rem;
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Sticky Bottom Action Bar
   -------------------------------------------------------------------------- */
.lms-footer-bar {
  height: var(--lms-footer-h);
  background: var(--lms-surface);
  border-top: 1px solid var(--lms-border);
  position: sticky;
  bottom: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 32px;
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.03);
}

.lms-footer-inner {
  width: 100%;
  max-width: 900px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.lms-nav-btn {
  background: none;
  border: 1px solid var(--lms-border);
  color: var(--lms-text);
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s;
}

.lms-nav-btn:hover:not(:disabled) {
  background: var(--lms-border);
  color: var(--lms-primary);
}

.lms-nav-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.lms-complete-btn {
  background: var(--lms-primary);
  color: #fff;
  border: none;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 4px 14px rgba(29, 114, 184, 0.3);
  transition: all 0.25s;
}

.lms-complete-btn:hover {
  background: var(--lms-primary-hover);
  transform: translateY(-1px);
}

.lms-complete-btn.is-completed {
  background: var(--lms-success);
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}

/* --------------------------------------------------------------------------
   Auth / Sign In Modal
   -------------------------------------------------------------------------- */
.lms-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  z-index: 999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.lms-modal-backdrop.open {
  display: flex;
}

.lms-auth-card {
  background: var(--lms-surface);
  border-radius: 16px;
  width: 100%;
  max-width: 480px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--lms-border);
  animation: modalPop 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalPop {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.lms-auth-header {
  padding: 24px;
  background: linear-gradient(135deg, #072a4a 0%, #1d72b8 100%);
  color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.lms-auth-title {
  font-family: 'Quicksand', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
}

.lms-auth-close {
  background: none;
  border: none;
  color: #fff;
  font-size: 1.4rem;
  cursor: pointer;
}

.lms-auth-tabs {
  display: flex;
  border-bottom: 1px solid var(--lms-border);
}

.lms-auth-tab {
  flex: 1;
  padding: 14px;
  text-align: center;
  background: none;
  border: none;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--lms-text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
}

.lms-auth-tab.active {
  color: var(--lms-primary);
  border-bottom-color: var(--lms-primary);
}

.lms-auth-body {
  padding: 24px;
}

.lms-auth-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.lms-form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.lms-form-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--lms-text);
}

.lms-form-input,
.lms-form-select {
  padding: 12px 14px;
  border: 1px solid var(--lms-border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.95rem;
  background: var(--lms-surface);
  color: var(--lms-text);
  outline: none;
  transition: border-color 0.2s;
}

.lms-form-input:focus,
.lms-form-select:focus {
  border-color: var(--lms-primary);
}

.lms-submit-btn {
  background: var(--lms-primary);
  color: #fff;
  border: none;
  padding: 14px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  margin-top: 8px;
  transition: background-color 0.2s;
}

.lms-submit-btn:hover {
  background: var(--lms-primary-hover);
}

.lms-quick-login-pills {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px dashed var(--lms-border);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.lms-quick-login-label {
  font-size: 0.8rem;
  color: var(--lms-text-muted);
  text-align: center;
}

.lms-pill-login-btn {
  background: var(--lms-bg);
  border: 1px solid var(--lms-border);
  color: var(--lms-text);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 0.85rem;
  cursor: pointer;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s;
}

.lms-pill-login-btn:hover {
  border-color: var(--lms-primary);
  color: var(--lms-primary);
}

/* Toast */
.lms-toast {
  position: fixed;
  bottom: 88px;
  right: 32px;
  background: #10b981;
  color: #fff;
  padding: 14px 22px;
  border-radius: 8px;
  font-weight: 600;
  box-shadow: 0 10px 25px rgba(0,0,0,0.2);
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 10px;
  transform: translateY(20px);
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.lms-toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* Course Complete Banner */
.lms-complete-banner {
  animation: fadeInBanner 0.5s ease-out;
}

@keyframes fadeInBanner {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

body.dark-mode .lms-complete-banner {
  background: linear-gradient(135deg, rgba(29, 114, 184, 0.25), rgba(0, 168, 107, 0.25)) !important;
  border-color: #00d688 !important;
}

body.dark-mode .lms-complete-banner h2 {
  color: #ffffff !important;
}

/* --------------------------------------------------------------------------
   Mobile-Only Elements & Drawer Backdrop
   -------------------------------------------------------------------------- */
.lms-mobile-hamburger {
  display: none;
}

.lms-mobile-progress-strip {
  display: none;
  background: var(--lms-surface);
  border-bottom: 1px solid var(--lms-border);
  padding: 8px 16px;
}

.lms-mobile-progress-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--lms-text-muted);
  margin-bottom: 5px;
}

.lms-mobile-progress-percent {
  color: var(--lms-primary);
  font-family: 'Oswald', sans-serif;
  letter-spacing: 0.5px;
}

.lms-mobile-progress-track {
  height: 5px;
  background: var(--lms-border);
  border-radius: 10px;
  overflow: hidden;
}

.lms-mobile-progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--lms-primary), #00a86b);
  border-radius: 10px;
  transition: width 0.3s ease;
}

.lms-sidebar-backdrop {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(2px);
  z-index: 1080;
}

.lms-sidebar-backdrop.show {
  display: block;
}

/* --------------------------------------------------------------------------
   Mobile Responsive Breakpoints (Tablet & Mobile)
   -------------------------------------------------------------------------- */
@media (max-width: 900px) {
  .lms-mobile-hamburger {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    margin-right: 6px;
    font-size: 1.05rem;
  }

  .lms-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 320px;
    max-width: 86vw;
    height: 100vh;
    z-index: 1100;
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 10px 0 35px rgba(0, 0, 0, 0.25);
  }

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

  .lms-sidebar-close-btn {
    display: flex !important;
    align-items: center;
    justify-content: center;
  }

  .lms-topbar-center {
    display: none;
  }

  .lms-mobile-progress-strip {
    display: block;
    position: sticky;
    top: var(--lms-header-h);
    z-index: 95;
  }

  .lms-stage {
    padding: 16px 14px 40px;
  }

  .lms-card {
    padding: 18px 16px;
    border-radius: 10px;
  }

  .lms-lesson-title {
    font-size: 1.4rem;
  }
}

@media (max-width: 600px) {
  .lms-topbar {
    padding: 0 10px;
    height: 56px;
  }

  .lms-topbar-left {
    gap: 6px;
  }

  .lms-logo-img {
    width: 32px;
    height: 32px;
  }

  .lms-brand-name {
    font-size: 1.15rem;
  }

  .lms-brand-sub {
    display: none;
  }

  .lms-topbar-right {
    gap: 6px;
  }

  .lms-user-btn {
    padding: 6px 10px;
    font-size: 0.8rem;
  }

  .lms-exit-btn {
    padding: 6px 10px;
    font-size: 0.8rem;
  }

  .lms-exit-text {
    display: none;
  }

  .lms-stage {
    padding: 12px 10px 30px;
  }

  .lms-card {
    padding: 16px 12px;
  }

  .lms-lesson-header {
    margin-bottom: 14px;
    gap: 8px;
  }

  .lms-lesson-title {
    font-size: 1.25rem;
    line-height: 1.35;
  }

  .lms-widescreen-toggle {
    display: none;
  }

  .lms-tabs-nav {
    gap: 16px;
    margin-bottom: 16px;
  }

  .lms-tab-link {
    font-size: 0.88rem;
    padding-bottom: 8px;
  }

  .lms-notes-body {
    font-size: 0.95rem;
    line-height: 1.65;
  }

  .lms-notes-body h3 {
    font-size: 1.25rem;
    margin: 16px 0 10px;
  }

  .lms-notes-body h4 {
    font-size: 1.05rem;
    margin: 14px 0 8px;
  }

  .lms-notes-body ol,
  .lms-notes-body ul {
    padding-left: 18px;
    margin-bottom: 16px;
  }

  .lms-footer-bar {
    padding: 8px 10px;
    height: auto;
    min-height: 58px;
  }

  .lms-footer-inner {
    gap: 8px;
  }

  .lms-nav-btn {
    padding: 9px 12px;
    font-size: 0.82rem;
    border-radius: 6px;
  }

  .lms-complete-btn {
    flex: 1.3;
    padding: 9px 12px;
    font-size: 0.82rem;
    border-radius: 6px;
    justify-content: center;
  }
}