@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Outfit:wght@500;600;700;800&display=swap');

:root {
    --ep-primary: #4F46E5;
    --ep-hover: #4338CA;
    --ep-dark: #0F172A;
    --ep-darker: #020617;
    --ep-light: #F8FAFC;
    --ep-border: #E2E8F0;
    --ep-success: #10B981;
    --ep-text: #475569;
    --ep-text-light: #94A3B8;
    --ep-radius: 16px;
    --ep-shadow: 0 10px 40px -10px rgba(0,0,0,0.1);
}

body.single-edupro_course, body.single-edupro_lesson {
    background-color: #f1f5f9;
    font-family: 'Inter', sans-serif;
    color: var(--ep-text);
    -webkit-font-smoothing: antialiased;
}

.edupro-container {
    max-width: 1400px;
    margin: 40px auto;
    padding: 0 20px;
}

/* Typography */
.edupro-h1, .edupro-h2, .edupro-h3 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    color: var(--ep-dark);
    line-height: 1.2;
}

.edupro-h1 { font-size: 2.5rem; margin-bottom: 20px; }
.edupro-h2 { font-size: 1.75rem; margin-bottom: 15px; }

/* Buttons */
.edupro-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--ep-primary);
    color: white;
    padding: 12px 24px;
    font-weight: 600;
    border-radius: 30px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 1rem;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.edupro-btn:hover {
    background: var(--ep-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(79, 70, 229, 0.4);
    color: #fff;
}

.edupro-btn-outline {
    background: transparent;
    border: 2px solid var(--ep-border);
    color: var(--ep-text);
    box-shadow: none;
}
.edupro-btn-outline:hover {
    background: var(--ep-light);
    color: var(--ep-dark);
    border-color: #cbd5e1;
}

/* Fast YouTube Loader (Lite Embed) */
.edupro-yt-lite {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 */
    background-color: #000;
    cursor: pointer;
    border-radius: var(--ep-radius);
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease;
}
.edupro-yt-lite:hover .edupro-yt-playbtn {
    background-color: #ff0000;
    transform: translate(-50%, -50%) scale(1.1);
}
.edupro-yt-lite img {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}
.edupro-yt-lite:hover img {
    opacity: 1;
}
.edupro-yt-playbtn {
    width: 70px;
    height: 48px;
    background-color: rgba(33,33,33,0.9);
    border-radius: 12px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
    z-index: 10;
}
.edupro-yt-playbtn::before {
    content: '';
    border-style: solid;
    border-width: 12px 0 12px 20px;
    border-color: transparent transparent transparent #fff;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-40%, -50%);
}

/* Timeline Chapters */
.edupro-timeline-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 15px;
    margin-top: 25px;
}
.edupro-timeline-card {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 15px;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: flex-start;
    gap: 12px;
    text-align: left;
    width: 100%;
}
.edupro-timeline-card:hover {
    background: #fff;
    border-color: var(--ep-primary);
    box-shadow: 0 10px 25px -5px rgba(79, 70, 229, 0.15);
    transform: translateY(-2px);
}
.edupro-chapter-hidden {
    display: none !important;
}
.edupro-timeline-icon {
    background: #e0e7ff;
    color: var(--ep-primary);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.2s;
}
.edupro-timeline-card:hover .edupro-timeline-icon {
    background: var(--ep-primary);
    color: #fff;
}
.edupro-timeline-content {
    flex: 1;
    min-width: 0;
}
.edupro-timeline-time {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    color: var(--ep-primary);
    font-size: 0.85rem;
    margin-bottom: 4px;
    background: #eef2ff;
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
}
.edupro-timeline-title {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--ep-dark);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Lesson Modern Layout */
.edupro-lesson-wrapper { background: #f1f5f9; min-height: 100vh; padding-top: 40px; padding-bottom: 60px; }
.edupro-lesson-header { max-width: 1400px; margin: 0 auto; padding: 0 20px 20px 20px; }

.edupro-lesson-layout {
    display: flex;
    gap: 30px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 30px 20px;
}
.edupro-lesson-sidebar {
    width: 350px;
    flex-shrink: 0;
    background: #fff;
    border-radius: var(--ep-radius);
    box-shadow: var(--ep-shadow);
    border: 1px solid rgba(255,255,255,0.8);
    overflow: hidden;
    position: sticky;
    top: 30px;
    height: calc(100vh - 60px);
    display: flex;
    flex-direction: column;
}
.edupro-sidebar-header {
    padding: 24px;
    background: #fff;
    border-bottom: 1px solid var(--ep-border);
    z-index: 10;
}
.edupro-sidebar-list {
    overflow-y: auto;
    flex: 1;
}
.edupro-sidebar-list::-webkit-scrollbar { width: 5px; }
.edupro-sidebar-list::-webkit-scrollbar-thumb { background: #e2e8f0; border-radius: 10px; }

.edupro-sidebar-item {
    display: block;
    padding: 18px 24px;
    border-bottom: 1px solid #f8fafc;
    color: var(--ep-text);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s;
    position: relative;
}
.edupro-sidebar-item:hover {
    background: #f8fafc;
    color: var(--ep-primary);
}
.edupro-sidebar-item.active {
    background: #EEF2FF;
    color: var(--ep-primary);
    font-weight: 600;
}
.edupro-sidebar-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--ep-primary);
}

.edupro-lesson-main {
    flex: 1;
    min-width: 0;
    background: #fff;
    border-radius: var(--ep-radius);
    box-shadow: var(--ep-shadow);
    padding: 40px;
}

/* Sticky Topbar & Offcanvas Curriculum Edge-to-Edge */
.edupro-sticky-topbar {
    display: none;
    background: #fff;
    padding: 15px 20px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 900;
    align-items: center;
    gap: 15px;
    border-bottom: 1px solid var(--ep-border);
}
.edupro-btn-toggle-menu {
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--ep-dark);
    font-family: 'Outfit', sans-serif;
    font-size: 1.1rem;
    padding: 8px 12px;
    border-radius: 8px;
    transition: background 0.2s;
}
.edupro-btn-toggle-menu:hover { background: #f1f5f9; }
.edupro-topbar-title {
    font-weight: 600;
    color: var(--ep-text-light);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.edupro-btn-close-menu {
    background: transparent; border: none; cursor: pointer; color: var(--ep-text-light); padding: 4px; border-radius: 6px; transition: all 0.2s;
}
.edupro-btn-close-menu:hover { background: #fee2e2; color: #ef4444; }
.edupro-sidebar-overlay {
    display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(15, 23, 42, 0.4); backdrop-filter: blur(4px); z-index: 999; opacity: 0; transition: opacity 0.3s;
}

/* Collapsed State (Desktop) */
.edupro-collapsed .edupro-sticky-topbar { display: flex; }
.edupro-collapsed .edupro-lesson-sidebar {
    position: fixed; top: 0; left: -350px; height: 100vh; border-radius: 0; border: none; z-index: 1000; transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1); box-shadow: 20px 0 50px rgba(0,0,0,0.1);
}
.edupro-collapsed .edupro-lesson-layout { gap: 0; }
.edupro-collapsed .edupro-lesson-header { display: none; }
.edupro-collapsed.edupro-lesson-wrapper { padding-top: 0; }

/* Offcanvas Open State */
.edupro-offcanvas-open .edupro-lesson-sidebar { left: 0; }
.edupro-offcanvas-open .edupro-sidebar-overlay { display: block; opacity: 1; }

.edupro-lesson-sidebar { transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1); }

/* Force offcanvas approach unconditionally on mobile and tablet */
@media(max-width: 1024px) {
    .edupro-lesson-header { display: none; } 
    .edupro-lesson-wrapper { padding-top: 0; }
    .edupro-sticky-topbar { display: flex; }
    .edupro-lesson-layout { flex-direction: column; padding-top: 20px; }
    .edupro-lesson-sidebar {
        position: fixed; top: 0; left: -360px; height: 100vh; max-width: 85vw; border-radius: 0; border: none; z-index: 1000; box-shadow: 20px 0 50px rgba(0,0,0,0.1); width: 320px;
    }
}
@media(max-width: 768px) {
    .edupro-topbar-title { display: none; }
    .edupro-lesson-layout { padding: 0; gap: 0; }
    .edupro-lesson-main { padding: 20px 15px; border-radius: 0; box-shadow: none; border-top: 1px solid var(--ep-border); }
    .edupro-h1 { font-size: 2rem; }
    .edupro-h2 { font-size: 1.5rem; }
}

/* Auth Cards UI */
.edupro-login-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 70vh;
    padding: 40px 20px;
    background-color: #f8fafc;
}
.edupro-login-card {
    background: #ffffff;
    width: 100%;
    max-width: 440px;
    padding: 40px;
    border-radius: 24px;
    box-shadow: 0 20px 40px -15px rgba(0,0,0,0.05);
    border: 1px solid rgba(226, 232, 240, 0.8);
}
.edupro-form-group {
    margin-bottom: 24px;
    text-align: left;
}
.edupro-label {
    display: block;
    font-weight: 600;
    color: var(--ep-dark);
    margin-bottom: 8px;
    font-size: 0.95rem;
}
.edupro-input {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid var(--ep-border);
    border-radius: 12px;
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
    color: var(--ep-dark);
    background: #f8fafc;
    transition: all 0.2s;
    box-sizing: border-box;
    outline: none;
}
.edupro-input:focus {
    background: #ffffff;
    border-color: var(--ep-primary);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
}
.edupro-alert {
    padding: 15px 20px;
    border-radius: 12px;
    border-left: 4px solid;
    margin-bottom: 24px;
    font-size: 0.95rem;
    font-weight: 500;
}

/* Dashboard & Course Grid UI */
.edupro-dashboard-header {
    background: linear-gradient(135deg, #4F46E5 0%, #312e81 100%);
    padding: 60px 40px;
    border-radius: 24px;
    color: #ffffff;
    margin-bottom: 40px;
    box-shadow: 0 20px 40px -10px rgba(79, 70, 229, 0.3);
}
.edupro-dashboard-header .edupro-h1 {
    color: #ffffff;
    margin-bottom: 10px;
}
.edupro-course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}
.edupro-course-card {
    background: #ffffff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px -10px rgba(0,0,0,0.08);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid #f1f5f9;
    display: flex;
    flex-direction: column;
}
.edupro-course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px -10px rgba(0,0,0,0.12);
}
.edupro-course-thumb {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: #e2e8f0;
}
.edupro-course-body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.edupro-course-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--ep-dark);
    line-height: 1.3;
}
.edupro-course-meta {
    font-size: 0.9rem;
    color: var(--ep-text-light);
    margin-bottom: 20px;
    display: flex;
    gap: 15px;
}
.edupro-progress-container {
    background: #f1f5f9;
    height: 8px;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 8px;
}
.edupro-progress-bar {
    background: var(--ep-primary);
    height: 100%;
    border-radius: 10px;
    transition: width 0.5s ease;
}
.edupro-progress-text {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--ep-primary);
    text-align: right;
    margin-bottom: 15px;
}
@media(max-width: 640px) {
    .edupro-login-card, .edupro-dashboard-header { padding: 30px 20px; border-radius: 16px; }
    .edupro-course-grid { grid-template-columns: 1fr; }
}

/* Single Course Enroll Page UI */
.edupro-single-hero {
    background: linear-gradient(135deg, #020617 0%, #1e1b4b 100%);
    padding: 80px 20px 100px 20px;
    margin-top: -20px;
    position: relative;
    overflow: hidden;
    text-align: center;
}
.edupro-single-hero .edupro-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.edupro-hero-overlay {
    position: absolute;
    top:0; left:0; width:100%; height:100%;
    background-image: radial-gradient(circle at center, rgba(79, 70, 229, 0.15) 0%, transparent 70%);
    z-index: 1;
}
.edupro-hero-badge {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #e2e8f0;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}
.edupro-course-split {
    display: flex;
    gap: 40px;
    margin-top: -60px;
    position: relative;
    z-index: 10;
    align-items: flex-start;
}
.edupro-course-main-content {
    flex: 1;
    min-width: 0;
}
.edupro-content-block {
    background: #ffffff;
    padding: 40px;
    border-radius: 24px;
    box-shadow: 0 10px 40px -10px rgba(0,0,0,0.05);
    border: 1px solid #f1f5f9;
}
.edupro-course-sidebar {
    width: 380px;
    flex-shrink: 0;
    position: sticky;
    top: 40px;
}
.edupro-enroll-card {
    background: #ffffff;
    padding: 40px;
    border-radius: 24px;
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.15);
    border: 1px solid #e2e8f0;
}
.edupro-price-display {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid #f1f5f9;
}
.edupro-price-display .edupro-currency {
    font-size: 2rem;
    font-weight: 700;
    color: var(--ep-dark);
    margin-right: 5px;
}
.edupro-price-display .edupro-amount {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--ep-dark);
    font-family: 'Outfit', sans-serif;
    line-height: 1;
}
.edupro-course-features {
    list-style: none;
    padding: 0;
    margin: 0;
}
.edupro-course-features li {
    padding: 12px 0;
    color: var(--ep-text);
    font-size: 0.95rem;
    font-weight: 500;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}
.edupro-curriculum-wrap {
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    overflow: hidden;
}
.edupro-lesson-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid #f1f5f9;
    background: #ffffff;
    transition: background 0.2s;
}
.edupro-lesson-row:last-child {
    border-bottom: none;
}
.edupro-lesson-row:hover {
    background: #f8fafc;
}
.edupro-lesson-info {
    display: flex;
    align-items: center;
    gap: 15px;
}
.edupro-lesson-num {
    background: #e0e7ff;
    color: var(--ep-primary);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 700;
}
.edupro-demo-badge {
    background: #dcfce7;
    color: #166534;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

@media(max-width: 1024px) {
    .edupro-course-split { flex-direction: column; }
    .edupro-course-sidebar { width: 100%; position: static; margin-top: 30px; }
    .edupro-single-hero { padding: 60px 20px 80px 20px; display:flex; text-align: left; }
    .edupro-single-hero .edupro-container { align-items: flex-start; }
    .edupro-single-hero .edupro-h1 { font-size: 2.2rem; }
}
@media(max-width: 640px) {
    .edupro-content-block { padding: 24px; border-radius: 16px; }
    .edupro-enroll-card { padding: 24px; border-radius: 16px; }
    .edupro-lesson-row { flex-direction: column; align-items: flex-start; gap: 15px; }
}