@font-face {
            font-family: 'Vazir';
            src: url('../../fonts/IRANSans\(FaNum\).ttf');
            font-weight: normal;
            font-style: normal;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Vazir', Tahoma, sans-serif;
        }

        body {
            background: linear-gradient(135deg, #0c1424 0%, #0a0f1a 100%);
            color: #e0e0ff;
            min-height: 100vh;
            direction: rtl;
            text-align: right;
        }

        /* Navbar Styles */
        nav {
            background: rgba(15, 23, 42, 0.95);
            backdrop-filter: blur(10px);
            padding: 15px 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid #2d3756;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
        }

        .logo {
            font-size: 1.6rem;
            font-weight: 700;
            color: #60a5fa;
            display: flex;
            align-items: center;
        }

        .logo i {
            margin-left: 10px;
            color: #3b82f6;
        }

        .nav-links {
            display: flex;
            gap: 25px;
        }

        .nav-links a {
            text-decoration: none;
            color: #cbd5e1;
            font-size: 1rem;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
            padding: 5px 0;
        }

        .nav-links a:hover {
            color: #60a5fa;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            right: 0;
            width: 0;
            height: 2px;
            background: #3b82f6;
            transition: width 0.3s ease;
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        /* Main Content */
        main {
            flex: 1;
            padding: 30px;
            max-width: 1200px;
            margin: 0 auto;
            width: 100%;
        }

        .page-header {
            margin-bottom: 30px;
            padding-bottom: 15px;
            border-bottom: 1px solid #2d3756;
        }

        .page-header h1 {
            font-size: 2.2rem;
            color: #93c5fd;
            margin-bottom: 10px;
        }

        .page-header p {
            color: #94a3b8;
            font-size: 1.1rem;
            max-width: 700px;
        }

        /* Chapter Navigation */
        .chapter-nav {
            background: rgba(15, 23, 42, 0.7);
            border-radius: 10px;
            padding: 20px;
            margin-bottom: 30px;
            border: 1px solid #2d3756;
        }

        .chapter-nav h2 {
            font-size: 1.5rem;
            color: #93c5fd;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .chapter-nav h2 i {
            color: #3b82f6;
        }

        .chapters {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
        }

        .chapter-btn {
            background: rgba(30, 41, 59, 0.7);
            border: 1px solid #2d3756;
            border-radius: 8px;
            padding: 12px 20px;
            color: #cbd5e1;
            cursor: pointer;
            transition: all 0.3s ease;
            font-weight: 500;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
        }

        .chapter-btn:hover {
            background: rgba(59, 130, 246, 0.3);
            border-color: #3b82f6;
        }

        .chapter-btn.active {
            background: rgba(59, 130, 246, 0.5);
            border-color: #60a5fa;
            color: #e0f2fe;
        }

        /* Sessions Section */
        .sessions-section {
            margin-top: 30px;
        }

        .section-header {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 25px;
        }

        .section-icon {
            width: 50px;
            height: 50px;
            border-radius: 10px;
            background: rgba(59, 130, 246, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #60a5fa;
            font-size: 1.5rem;
        }

        .section-title {
            font-size: 1.8rem;
            color: #93c5fd;
        }

        /* Session Accordion */
        .session-accordion {
            background: rgba(15, 23, 42, 0.7);
            border-radius: 10px;
            border: 1px solid #2d3756;
            overflow: hidden;
            margin-bottom: 15px;
        }

        .session-header {
            padding: 20px;
            background: rgba(30, 41, 59, 0.7);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: all 0.3s ease;
            width: 100%;
            border: 0;
            color: inherit;
            text-align: right;
        }

        .session-header:hover {
            background: rgba(30, 41, 59, 0.9);
        }

        .session-info {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .session-number {
            width: 35px;
            height: 35px;
            border-radius: 50%;
            background: rgba(59, 130, 246, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #93c5fd;
            font-weight: bold;
        }

        .session-title {
            font-size: 1.2rem;
            color: #e2e8f0;
        }

        .session-duration {
            color: #94a3b8;
            font-size: 0.9rem;
        }

        .accordion-icon {
            transition: transform 0.3s ease;
        }

        .session-header.is-open .accordion-icon {
            transform: rotate(180deg);
        }

        .session-content {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
        }

        .session-content.open {
            padding: 20px;
            max-height: 1000px;
        }

        .resources {
            margin-top: 15px;
        }

        .resources h4 {
            color: #93c5fd;
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .resources h4 i {
            color: #3b82f6;
        }

        .resource-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
        }

        .resource-item {
            background: rgba(10, 17, 32, 0.8);
            border-radius: 8px;
            padding: 15px;
            border: 1px solid #2d3756;
            display: flex;
            align-items: center;
            gap: 15px;
            transition: all 0.3s ease;
            text-decoration: none;
            color: inherit;
        }

        .resource-item:hover {
            border-color: #3b82f6;
            transform: translateY(-3px);
        }

        .resource-icon {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: rgba(59, 130, 246, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #60a5fa;
            font-size: 1.1rem;
        }

        .resource-details {
            flex: 1;
        }

        .resource-name {
            color: #e2e8f0;
            font-weight: 500;
            margin-bottom: 5px;
        }

        .resource-type {
            color: #94a3b8;
            font-size: 0.85rem;
        }

        /* Progress Bar */
        .progress-container {
            margin-top: 30px;
            background: rgba(15, 23, 42, 0.7);
            border-radius: 10px;
            padding: 20px;
            border: 1px solid #2d3756;
        }

        .progress-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 15px;
        }

        .progress-title {
            font-size: 1.2rem;
            color: #93c5fd;
        }

        .progress-percent {
            color: #60a5fa;
            font-weight: bold;
        }

        .progress-bar {
            height: 12px;
            background: rgba(30, 41, 59, 0.7);
            border-radius: 6px;
            overflow: hidden;
        }

        .progress-fill {
            height: 100%;
            background: linear-gradient(90deg, #3b82f6, #60a5fa);
            border-radius: 6px;
            width: 65%;
            transition: width 1s ease;
        }

        /* Footer */
        footer {
            background: rgba(15, 23, 42, 0.95);
            padding: 25px;
            text-align: center;
            font-size: 0.95rem;
            color: #94a3b8;
            border-top: 1px solid #2d3756;
            margin-top: 40px;
        }

        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links {
            display: flex;
            justify-content: center;
            gap: 25px;
            flex-wrap: wrap;
        }

        .footer-links a {
            color: #60a5fa;
            text-decoration: none;
            transition: color 0.3s;
        }

        .footer-links a:hover {
            color: #93c5fd;
            text-decoration: underline;
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .chapters {
                flex-direction: column;
            }

            .chapter-btn {
                width: 100%;
                text-align: center;
            }

            .resource-list {
                grid-template-columns: 1fr;
            }
        }