/* ==============================
   THEME VARIABLES
================================ */
:root {
    --primary: #1e5gf4;
    --primary-light: #e8f0fe;
    --secondary: #0f766e;
    --accent: #f59e0b;
  
    --text-dark: #1f2937;
    --text-muted: #6b7280;
    --text-light: #9ca3af;
  
    --bg-main: #f9fafb;
    --bg-card: #ffffff;
    --bg-section: #f3f4f6;
  
    --border: #e5e7eb;
  
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
  
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 40px;
  
    --font-main: "Inter", system-ui, sans-serif;
  }
  
  /* ==============================
     RESET & BASE
  ================================ */
  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }
  
  html {
    scroll-behavior: smooth;
  }
  
  body {
    margin: 0;
    font-family: var(--font-main);
    background: var(--bg-main);
    color: var(--text-dark);
    line-height: 1.6;
  }
  
  img {
    max-width: 100%;
    display: block;
  }
  
  a {
    text-decoration: none;
    color: var(--primary);
  }
  
  /* ==============================
     TYPOGRAPHY
  ================================ */
  h1 {
    font-size: clamp(1.8rem, 3vw, 2.6rem);
    line-height: 1.3;
  }
  
  h2 {
    font-size: clamp(1.4rem, 2.5vw, 2rem);
  }
  
  h3 {
    font-size: 1.2rem;
  }
  
  p {
    font-size: clamp(0.95rem, 1.5vw, 1.05rem);
    color: var(--text-muted);
  }
  
  /* ==============================
     APP LAYOUT
  ================================ */
  .lms-app {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: 100vh;
  }
  
  .lms-main {
    padding: var(--space-xl);
  }
  
  /* ==============================
     SIDEBAR
  ================================ */
  .lms-sidebar {
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    padding: var(--space-lg);
  }
  
  .lms-sidebar h2 {
    margin-bottom: var(--space-lg);
  }
  
  .lms-nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
  }
  
  .lms-nav a {
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    color: var(--text-dark);
  }
  
  .lms-nav a:hover,
  .lms-nav a.active {
    background: var(--primary-light);
    color: var(--primary);
  }
  
  /* ==============================
     HEADER
  ================================ */
  .lms-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
  }
  
  /* ==============================
     HERO SECTION
  ================================ */
  .lms-hero {
    text-align: center;
    padding: clamp(40px, 8vw, 80px) 20px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-xl);
  }
  
  .lms-hero p {
    max-width: 800px;
    margin: 16px auto 0;
  }
  
  /* ==============================
     CARDS
  ================================ */
  .lms-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    margin-bottom: clamp(24px, 4vw, 48px);
  }
  
  .lms-card-title {
    font-weight: 600;
    margin-bottom: var(--space-md);
  }
  
  /* ==============================
     BUTTONS
  ================================ */
  .btn {
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    font-weight: 500;
    min-height: 44px;
  }
  
  .btn-primary {
    background: var(--primary);
    color: #fff;
  }
  
  .btn-outline {
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
  }
  
  .btn:focus-visible {
    outline: 3px solid var(--primary-light);
  }
  
  /* ==============================
     STATS / IMPACT
  ================================ */
  .stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: clamp(16px, 3vw, 32px);
  }
  
  .stat-card {
    background: var(--bg-card);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary);
    text-align: center;
  }
  
  .stat-card h3 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
  }
  
  /* ==============================
     COURSE GRID
  ================================ */
  .course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: clamp(16px, 3vw, 32px);
  }
  
  .course-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    overflow: hidden;
  }
  
  .course-card img {
    height: 150px;
    object-fit: cover;
  }
  
  .course-card-content {
    padding: var(--space-md);
  }
  
  /* ==============================
     COURSE PLAYER
  ================================ */
  .course-player {
    display: grid;
    grid-template-columns: 3fr 1.2fr;
    gap: var(--space-lg);
  }
  
  .lesson-content,
  .lesson-sidebar {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
  }
  
  /* ==============================
     LESSON LIST
  ================================ */
  .lesson-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
  }
  
  .lesson-item {
    padding: 10px;
    border-radius: var(--radius-sm);
    cursor: pointer;
  }
  
  .lesson-item:hover,
  .lesson-item.active {
    background: var(--primary-light);
  }
  
  /* ==============================
     PARTNER LOGOS
  ================================ */
  .partner-logos {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 24px;
    align-items: center;
  }
  
  .partner-logos img {
    max-height: 60px;
    object-fit: contain;
    opacity: 0.85;
  }
  
  /* ==============================
     FORMS
  ================================ */
  .form-group {
    margin-bottom: var(--space-md);
  }
  
  .form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
  }
  
  .form-group input,
  .form-group select,
  .form-group textarea {
    width: 100%;
    padding: 10px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
  }

  .image-preview {
    width: 100%;
    height: 180px;
    border: 1px solid #d1d3e2;
    border-radius: 8px;
    display: flex;
    align-items: top;
    justify-content: center;
    margin-bottom: 10px;
    padding: 20px;
  }
  
  .image-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 6px;
  }
  
  .upload-btn {
    padding: 6px 14px;
    background: #1677ff;
    color: #fff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
  }
  
  .upload-btn:hover {
    background: #0958d9;
  }
  
  .lesson-div {
    width: 100%;
    height: 100px;
    border: 1px solid #d1d3e2;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: left;
  }
  /* ==============================
     RESPONSIVE
  ================================ */
  @media (max-width: 768px) {
    .lms-app {
      grid-template-columns: 1fr;
    }
  
    .lms-sidebar {
      display: none;
    }
  
    .lms-main {
      padding: 20px;
    }
  
    .lms-header {
      flex-direction: column;
      align-items: flex-start;
      gap: 12px;
    }
  
    .course-player {
      grid-template-columns: 1fr;
    }
  
    .btn {
      width: 100%;
    }
  }
  
  @media (max-width: 400px) {
    .lms-card {
      padding: 16px;
    }
  
    h1 {
      font-size: 1.6rem;
    }
  }