/**
 * Learning Platform Design System V2
 * Einheitliches Design wie Partner-Werden & Knowledge Hub
 */

:root {
    --rs-primary: #7c3aed;
    --rs-primary-dark: #6d28d9;
    --rs-success: #10b981;
    --rs-success-dark: #059669;
    --rs-warning: #f59e0b;
    --rs-danger: #ef4444;
    --rs-gray-50: #f9fafb;
    --rs-gray-100: #f3f4f6;
    --rs-gray-200: #e5e7eb;
    --rs-gray-300: #d1d5db;
    --rs-gray-400: #9ca3af;
    --rs-gray-500: #6b7280;
    --rs-gray-600: #4b5563;
    --rs-gray-700: #374151;
    --rs-gray-800: #1f2937;
    --rs-gray-900: #111827;
}

.learning-single-wrapper { background: var(--rs-gray-50); min-height: 100vh; }
.learning-hero { background: linear-gradient(135deg, var(--rs-primary) 0%, var(--rs-primary-dark) 50%, var(--rs-primary) 100%); padding: 140px 0 80px; position: relative; overflow: hidden; }
.learning-hero::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background-image: radial-gradient(circle at 20% 30%, rgba(255,255,255,0.1) 0%, transparent 50%); pointer-events: none; }
.learning-hero-grid { max-width: 1200px; margin: 0 auto; padding: 0 20px; display: grid; grid-template-columns: 2fr 1fr; gap: 60px; align-items: start; position: relative; z-index: 1; }
.learning-hero-info h1 { font-size: 48px; font-weight: 900; color: white; margin: 0 0 20px 0; line-height: 1.2; }
.learning-hero-info p { font-size: 18px; color: rgba(255,255,255,0.95); margin: 0 0 30px 0; line-height: 1.7; }
.learning-meta-flex { display: flex; gap: 30px; flex-wrap: wrap; }
.learning-meta-item { display: flex; align-items: center; gap: 10px; color: rgba(255,255,255,0.95); font-size: 15px; font-weight: 500; }
.learning-meta-item svg { width: 22px; height: 22px; stroke-width: 2.5; }
.learning-sidebar-box { background: white; padding: 32px; border-radius: 16px; box-shadow: 0 20px 40px rgba(0,0,0,0.15); }
.sidebar-price { text-align: center; margin-bottom: 24px; }
.price-badge { font-size: 14px; font-weight: 700; color: white; background: linear-gradient(135deg, var(--rs-success) 0%, var(--rs-success-dark) 100%); padding: 10px 24px; border-radius: 50px; display: inline-block; }
.price-number { font-size: 36px; font-weight: 900; color: var(--rs-primary); }
.sidebar-stat { display: flex; justify-content: space-between; align-items: center; padding: 16px 0; border-bottom: 1px solid var(--rs-gray-200); }
.sidebar-stat:last-child { border-bottom: none; }
.sidebar-stat-label { font-size: 15px; color: var(--rs-gray-600); font-weight: 500; }
.sidebar-stat-value { font-size: 16px; font-weight: 700; color: var(--rs-gray-900); }
.rs-enroll-btn { width: 100%; background: linear-gradient(135deg, var(--rs-primary) 0%, var(--rs-primary-dark) 100%); color: white; padding: 18px 32px; border: none; border-radius: 12px; font-size: 17px; font-weight: 700; cursor: pointer; margin-top: 24px; transition: all 0.3s ease; text-decoration: none; display: block; text-align: center; }
.rs-enroll-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(124,58,237,0.3); color: white; }
.rs-enroll-btn:disabled { background: var(--rs-gray-300); cursor: not-allowed; transform: none; box-shadow: none; }
.rs-legal-box { background: #fff5f5; border-left: 4px solid var(--rs-danger); padding: 16px; border-radius: 8px; font-size: 13px; color: #7f1d1d; margin-top: 24px; line-height: 1.6; }
.rs-legal-box strong { display: block; margin-bottom: 6px; font-size: 14px; }
.learning-body-grid { max-width: 1200px; margin: 0 auto; padding: 80px 20px; display: grid; grid-template-columns: 2fr 1fr; gap: 40px; }
.learning-main { background: white; padding: 50px; border-radius: 16px; box-shadow: 0 2px 12px rgba(0,0,0,0.05); }
.rs-content-section { margin-bottom: 50px; }
.rs-content-section:last-child { margin-bottom: 0; }
.rs-content-section h2 { font-size: 32px; font-weight: 900; color: var(--rs-gray-900); margin: 0 0 24px 0; }
.rs-modules-list { list-style: none; padding: 0; margin: 0; }
.rs-module-card { background: var(--rs-gray-50); border: 2px solid var(--rs-gray-200); border-radius: 16px; margin-bottom: 24px; overflow: hidden; transition: all 0.3s ease; }
.rs-module-card:hover { border-color: var(--rs-primary); box-shadow: 0 4px 12px rgba(124,58,237,0.1); }
.rs-module-head { padding: 28px 32px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; background: white; transition: background 0.3s ease; }
.rs-module-head:hover { background: var(--rs-gray-50); }
.rs-module-title { font-size: 20px; font-weight: 700; color: var(--rs-gray-900); margin: 0 0 8px 0; }
.rs-module-meta { display: flex; gap: 24px; font-size: 14px; color: var(--rs-gray-500); font-weight: 500; }
.rs-module-toggle { font-size: 24px; color: var(--rs-primary); transition: transform 0.3s ease; user-select: none; }
.rs-module-toggle.open { transform: rotate(180deg); }
.rs-lessons-list { padding: 0 32px 32px; list-style: none; margin: 0; display: none; }
.rs-lessons-list.open { display: block; animation: slideDown 0.3s ease; }
@keyframes slideDown { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: translateY(0); } }
.rs-lesson-row { padding: 20px; border-left: 4px solid var(--rs-gray-200); margin-bottom: 16px; background: white; display: flex; justify-content: space-between; align-items: center; border-radius: 12px; transition: all 0.3s ease; }
.rs-lesson-row:hover { border-left-color: var(--rs-primary); background: var(--rs-gray-50); transform: translateX(4px); }
.rs-lesson-row.completed { border-left-color: var(--rs-success); background: #f0fdf4; }
.rs-lesson-row.locked { opacity: 0.5; }
.rs-lesson-info { display: flex; align-items: center; gap: 16px; flex: 1; }
.rs-lesson-icon { width: 48px; height: 48px; border-radius: 50%; background: var(--rs-gray-100); display: flex; align-items: center; justify-content: center; font-size: 20px; flex-shrink: 0; }
.rs-lesson-row.completed .rs-lesson-icon { background: #d1fae5; color: var(--rs-success); }
.rs-lesson-title { font-size: 16px; font-weight: 600; color: var(--rs-gray-900); margin: 0 0 6px 0; }
.rs-lesson-meta { font-size: 14px; color: var(--rs-gray-500); }
.rs-lesson-btn { padding: 10px 24px; background: linear-gradient(135deg, var(--rs-primary) 0%, var(--rs-primary-dark) 100%); color: white; border-radius: 8px; text-decoration: none; font-size: 14px; font-weight: 700; transition: all 0.3s ease; white-space: nowrap; }
.rs-lesson-btn:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(124,58,237,0.3); color: white; }
.rs-lesson-row.completed .rs-lesson-btn { background: linear-gradient(135deg, var(--rs-success) 0%, var(--rs-success-dark) 100%); }
.rs-lesson-row.locked .rs-lesson-btn { background: var(--rs-gray-300); cursor: not-allowed; transform: none; }
.rs-progress-sidebar { position: sticky; top: 20px; }
.rs-progress-card { background: white; padding: 32px; border-radius: 16px; box-shadow: 0 2px 12px rgba(0,0,0,0.05); margin-bottom: 24px; }
.rs-progress-card h3 { font-size: 20px; font-weight: 700; color: var(--rs-gray-900); margin: 0 0 20px 0; }
.rs-progress-bar { background: var(--rs-gray-200); height: 14px; border-radius: 7px; overflow: hidden; margin-bottom: 16px; }
.rs-progress-fill { height: 100%; background: linear-gradient(90deg, var(--rs-success) 0%, var(--rs-success-dark) 100%); transition: width 0.6s ease; border-radius: 7px; }
.rs-progress-text { text-align: center; font-size: 15px; color: var(--rs-gray-600); font-weight: 600; }
.rs-progress-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 24px; }
.rs-progress-stat { text-align: center; padding: 20px; background: var(--rs-gray-50); border-radius: 12px; }
.rs-stat-number { font-size: 28px; font-weight: 900; color: var(--rs-primary); display: block; }
.rs-stat-label { font-size: 13px; color: var(--rs-gray-600); margin-top: 6px; font-weight: 600; }
.rs-completion { background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%); border: 2px solid var(--rs-success); padding: 24px; border-radius: 12px; text-align: center; margin-top: 24px; }
.rs-completion strong { display: block; font-size: 18px; color: #065f46; margin-bottom: 12px; }
.rs-completion a { display: inline-block; margin-top: 12px; color: var(--rs-primary); font-weight: 700; text-decoration: none; }

/* Lesson Single */
.lesson-single { background: var(--rs-gray-50); min-height: 100vh; padding: 120px 0 80px; }
.lesson-wrap { max-width: 1000px; margin: 0 auto; padding: 0 20px; }
.lesson-breadcrumb { margin-bottom: 32px; font-size: 15px; color: var(--rs-gray-600); }
.lesson-breadcrumb a { color: var(--rs-primary); text-decoration: none; font-weight: 600; }
.lesson-breadcrumb a:hover { text-decoration: underline; }
.rs-complete-badge { background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%); color: #065f46; padding: 14px 24px; border-radius: 50px; display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 15px; margin-bottom: 24px; }
.lesson-header { margin-bottom: 40px; }
.lesson-header h1 { font-size: 40px; font-weight: 900; color: var(--rs-gray-900); margin: 0 0 16px 0; line-height: 1.2; }
.lesson-meta-row { display: flex; gap: 24px; align-items: center; color: var(--rs-gray-600); font-size: 15px; }
.lesson-video { width: 100%; aspect-ratio: 16/9; background: #000; border-radius: 16px; overflow: hidden; margin-bottom: 40px; box-shadow: 0 8px 24px rgba(0,0,0,0.15); }
.lesson-video iframe, .lesson-video video { width: 100%; height: 100%; }
.lesson-content { background: white; padding: 50px; border-radius: 16px; box-shadow: 0 2px 12px rgba(0,0,0,0.05); margin-bottom: 40px; line-height: 1.8; }
.lesson-content h2 { font-size: 28px; font-weight: 700; color: var(--rs-gray-900); margin: 40px 0 20px 0; }
.lesson-content h2:first-child { margin-top: 0; }
.lesson-content h3 { font-size: 22px; font-weight: 700; color: var(--rs-gray-800); margin: 30px 0 16px 0; }
.lesson-content p { font-size: 16px; color: var(--rs-gray-700); margin-bottom: 16px; }
.lesson-content ul, .lesson-content ol { margin: 20px 0; padding-left: 24px; }
.lesson-content li { font-size: 16px; color: var(--rs-gray-700); margin-bottom: 12px; }
.lesson-content table { width: 100%; border-collapse: collapse; margin: 24px 0; }
.lesson-content th, .lesson-content td { padding: 14px; border: 1px solid var(--rs-gray-200); text-align: left; }
.lesson-content th { background: var(--rs-gray-50); font-weight: 700; color: var(--rs-gray-900); }
.lesson-content strong { font-weight: 700; color: var(--rs-gray-900); }
.lesson-nav { display: flex; justify-content: space-between; gap: 20px; margin-top: 40px; }
.lesson-nav-btn { flex: 1; padding: 18px 32px; border-radius: 12px; text-align: center; text-decoration: none; font-weight: 700; font-size: 16px; transition: all 0.3s ease; }
.btn-secondary { background: var(--rs-gray-200); color: var(--rs-gray-800); }
.btn-secondary:hover { background: var(--rs-gray-300); color: var(--rs-gray-900); }
.btn-primary { background: linear-gradient(135deg, var(--rs-primary) 0%, var(--rs-primary-dark) 100%); color: white; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(124,58,237,0.3); color: white; }
.btn-success { background: linear-gradient(135deg, var(--rs-success) 0%, var(--rs-success-dark) 100%); color: white; }
.btn-success:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(16,185,129,0.3); color: white; }

@media (max-width: 968px) {
    .learning-hero { padding: 120px 0 60px; }
    .learning-hero-grid { grid-template-columns: 1fr; gap: 40px; }
    .learning-sidebar-box { order: -1; }
    .learning-hero-info h1 { font-size: 36px; }
    .learning-body-grid { grid-template-columns: 1fr; padding: 60px 20px; }
    .learning-main { padding: 32px 24px; }
    .rs-module-head { padding: 20px; }
    .rs-lessons-list { padding: 0 20px 20px; }
    .lesson-nav { flex-direction: column; }
}

@media (max-width: 640px) {
    .learning-hero-info h1 { font-size: 28px; }
    .learning-hero-info p { font-size: 16px; }
    .learning-main { padding: 24px 20px; }
    .lesson-header h1 { font-size: 28px; }
    .lesson-content { padding: 28px 20px; }
    .rs-progress-grid { grid-template-columns: 1fr; }
}