/**
 * ACADEMY SPECIFIC STYLES
 * Extends the main style.css with course-specific layouts.
 */

 /* =========================================
    LAYOUT & SIDEBAR (DESKTOP)
 ========================================= */
 .academy-layout {
     display: grid;
     grid-template-columns: 1fr;
     gap: 1.5rem;
     padding-top: calc(var(--top-nav-height) + 1.5rem);
     padding-left: 16px;
     padding-right: 16px;
     width: 100%;
     max-width: 480px;
     margin: 0 auto;
     overflow-x: hidden;
 }
 
 @media (min-width: 768px) {
     .academy-layout {
         gap: 2rem;
         padding-left: 1.5rem;
         padding-right: 1.5rem;
         max-width: 1200px;
     }
 }
 
 @media (min-width: 1024px) {
     .academy-layout {
         grid-template-columns: 300px 1fr;
         align-items: start;
     }
     
     .course-sidebar {
         position: sticky;
         top: calc(var(--top-nav-height) + 2rem);
     }
 }
 
 /* =========================================
    BREADCRUMBS
 ========================================= */
 .breadcrumb {
     display: flex;
     flex-wrap: wrap;
     align-items: center;
     gap: 6px;
     font-size: 12px;
     color: var(--text-muted);
     margin-bottom: 2rem;
 }
 
 @media (min-width: 1024px) {
     .breadcrumb {
         justify-content: flex-start;
     }
 }
 
 .breadcrumb a {
     color: var(--primary);
     transition: color 0.3s;
 }
 
 .breadcrumb a:hover {
     color: white;
 }
 
 .breadcrumb i {
     font-size: 0.8rem;
 }
 
 /* =========================================
    SIDEBAR & PROGRESS
 ========================================= */
 .progress-card {
     margin-bottom: 1.5rem;
     padding: 16px;
     width: 100%;
     max-width: 100%;
     border-radius: 14px;
     text-align: center;
     display: flex;
     flex-direction: column;
     align-items: center;
 }
 
 @media (min-width: 768px) {
     .progress-card {
         padding: 1.5rem;
     }
 }
 
 .progress-header {
     display: flex;
     justify-content: center;
     align-items: center;
     margin-bottom: 1rem;
     font-weight: 600;
     font-size: clamp(14px, 4vw, 18px);
     flex-wrap: wrap;
     gap: 6px;
     width: 100%;
 }
 
 .progress-track {
     width: 100%;
     height: 8px;
     background: rgba(255, 255, 255, 0.1);
     border-radius: 4px;
     overflow: hidden;
     margin-bottom: 1rem;
 }
 
 .progress-fill {
     height: 100%;
     background: linear-gradient(90deg, var(--secondary), #34d399);
     border-radius: 4px;
     transition: width 0.5s ease;
 }
 
 .lesson-list {
     display: flex;
     flex-direction: column;
     gap: 0.5rem;
     align-items: center;
     text-align: center;
 }
 
 .lesson-item {
     display: flex;
     align-items: center;
     justify-content: flex-start;
     gap: 10px;
     padding: 12px 16px;
     background: rgba(255, 255, 255, 0.02);
     border-radius: 10px;
     transition: background 0.3s;
     cursor: pointer;
     min-height: 44px;
     width: 100%;
     overflow: hidden;
 }
 
 .lesson-item span {
     flex: 1;
     font-size: 14px;
     text-align: left;
 }
 
 @media (min-width: 768px) {
     .lesson-item {
         padding: 0.75rem 1rem;
     }
 }
 
 .lesson-item:hover {
     background: rgba(255, 255, 255, 0.05);
 }
 
 .lesson-item.completed .lesson-icon {
     color: var(--secondary);
 }
 
 .lesson-item.active {
     border: 1px solid var(--border-glass);
     background: rgba(255, 255, 255, 0.08);
 }
 
 .lesson-icon {
     font-size: 1.2rem;
     color: var(--text-muted);
 }
 
 /* =========================================
    COURSE CONTENT & ACCORDIONS
 ========================================= */
 .course-header {
     margin-bottom: 3rem;
     text-align: center;
     width: 100%;
     display: flex;
     flex-direction: column;
     align-items: center;
 }
 
 .course-title {
     font-size: clamp(24px, 8vw, 42px);
     margin-bottom: 1rem;
     word-wrap: break-word;
     overflow-wrap: break-word;
     line-height: 1.2;
 }
 
 .module {
     margin-bottom: 16px;
     border-radius: 14px;
 }
 
 .module-header {
     display: flex;
     justify-content: space-between;
     align-items: center;
     padding: 1rem;
     cursor: pointer;
     transition: background 0.3s;
     word-wrap: break-word;
     overflow-wrap: break-word;
     gap: 1rem;
     min-height: 48px;
 }
 
 @media (min-width: 768px) {
     .module-header {
         padding: 1.5rem;
     }
 }
 
 .module-header:hover {
     background: rgba(255, 255, 255, 0.05);
 }
 
 .module-title {
     font-size: clamp(1rem, 3vw, 1.2rem);
     font-family: var(--font-heading);
     word-wrap: break-word;
     overflow-wrap: break-word;
     overflow: hidden;
 }
 
 .module-icon {
     font-size: 1.5rem;
     transition: transform 0.3s;
 }
 
 .module.active .module-icon {
     transform: rotate(180deg);
 }
 
 .module-content {
     padding: 0 1.5rem;
     max-height: 0;
     overflow: hidden;
     transition: max-height 0.4s ease, padding 0.4s ease;
 }
 
 .module.active .module-content {
     padding: 0 16px 16px 16px;
 }
 
 @media (min-width: 768px) {
     .module-content {
         padding: 0 1.5rem;
     }
     .module.active .module-content {
         padding: 0 1.5rem 1.5rem 1.5rem;
     }
 }
 
 /* =========================================
    INTERACTIVE ELEMENTS & CODE
 ========================================= */
 .qna-card {
     background: rgba(0, 0, 0, 0.2);
     border-radius: 12px;
     padding: 1rem;
     margin-top: 1rem;
     border-left: 4px solid var(--primary);
 }
 
 @media (min-width: 768px) {
     .qna-card {
         padding: 1.5rem;
     }
 }
 
 .qna-q {
     font-weight: 600;
     margin-bottom: 1rem;
     color: white;
 }
 
 .qna-a {
     color: var(--text-muted);
 }
 
 .code-block {
     position: relative;
     background: #111116;
     border-radius: 10px;
     margin: 1.5rem 0;
     overflow: hidden;
 }
 
 .code-header {
     display: flex;
     justify-content: space-between;
     align-items: center;
     padding: 0.5rem 1rem;
     background: rgba(255, 255, 255, 0.05);
     font-size: 0.85rem;
     color: var(--text-muted);
 }
 
 .copy-btn {
     background: none;
     border: none;
     color: var(--primary);
     cursor: pointer;
     display: flex;
     align-items: center;
     gap: 0.25rem;
     font-family: var(--font-body);
     font-size: 0.85rem;
     transition: color 0.3s;
 }
 
 .copy-btn:hover {
     color: white;
 }
 
 .code-block pre {
     padding: 1rem;
     overflow-x: auto;
     color: #e2e8f0;
     font-family: Consolas, Monaco, monospace;
     font-size: 0.9rem;
     line-height: 1.5;
 }
 
 /* =========================================
    MATHS & EQUATIONS
 ========================================= */
 .math-step {
     display: flex;
     gap: 1rem;
     margin-bottom: 1rem;
     align-items: center;
     background: rgba(255, 255, 255, 0.02);
     padding: 1rem;
     border-radius: 10px;
 }
 
 .math-num {
     width: 30px;
     height: 30px;
     border-radius: 50%;
     background: var(--primary);
     color: white;
     display: flex;
     align-items: center;
     justify-content: center;
     font-weight: 700;
     flex-shrink: 0;
 }
 
 .answer-highlight {
     color: var(--secondary);
     font-weight: 700;
     padding: 0.25rem 0.5rem;
     background: rgba(5, 150, 105, 0.1);
     border-radius: 4px;
 }
 
 /* =========================================
    PRACTICE SECTION
 ========================================= */
 .practice-box {
     border: 1px dashed var(--border-glass);
     border-radius: 15px;
     padding: 2rem;
     text-align: center;
     margin-top: 3rem;
 }
 
 .answer-toggle-content {
     display: none;
     margin-top: 1.5rem;
     padding-top: 1.5rem;
     border-top: 1px solid var(--border-glass);
     text-align: left;
 }
 
 .answer-toggle-content.show {
     display: block;
 }
 
 /* =========================================
    STICKY CONTINUE MOB
 ========================================= */
 .sticky-continue {
     position: fixed;
     bottom: calc(var(--bottom-nav-height) + 1.5rem);
     left: 50%;
     transform: translateX(-50%);
     z-index: 990;
     box-shadow: 0 10px 25px rgba(0,0,0,0.5);
 }
 
 @media (min-width: 768px) {
     .sticky-continue {
         display: none; /* Hide on desktop assuming sidebar handles progress */
     }
 }