.loading-placeholder {
    min-height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--body-bg);
    border-radius: 12px;
    color: var(--gray);
    text-align: center;
    padding: 20px;
}

.loading-spinner {
    width: 30px;
    height: 30px;
    border: 3px solid var(--body-bg);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 15px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* استایل بهبود یافته برای ابزارهای سایدبار */
.sidebar-tools-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.sidebar-tool-item {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 15px;
    border: 1px solid rgba(0, 102, 255, 0.1);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.sidebar-tool-item:hover {
    transform: translateX(-5px);
    border-color: var(--primary);
    box-shadow: 0 5px 20px var(--shadow);
}

.sidebar-tool-item::before {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    height: 100%;
    width: 4px;
    background: linear-gradient(to bottom, var(--primary), var(--secondary));
    opacity: 0;
    transition: var(--transition);
}

.sidebar-tool-item:hover::before {
    opacity: 1;
}

.sidebar-tool-link {
    display: flex;
    align-items: center;
    gap: 15px;
    text-decoration: none;
    color: var(--text);
}

.sidebar-tool-icon {
    width: 45px;
    height: 45px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.sidebar-tool-content {
    flex: 1;
}

.sidebar-tool-content h4 {
    font-size: 1rem;
    margin-bottom: 5px;
    color: var(--primary);
    line-height: 1.4;
}

.sidebar-tool-content p {
    font-size: 0.85rem;
    color: var(--gray);
    line-height: 1.5;
    margin: 0;
}

.tool-badge {
    display: inline-block;
    background-color: rgba(0, 102, 255, 0.1);
    color: var(--primary);
    font-size: 0.75rem;
    padding: 3px 8px;
    border-radius: 10px;
    margin-top: 5px;
}
        
        :root {
            --primary: #0066ff;
            --primary-dark: #0052d4;
            --secondary: #00d4ff;
            --accent: #9d4edd;
            --dark: #0a0a14;
            --light: #f8f9fa;
            --gray: #6c757d;
            --card-bg: #ffffff;
            --body-bg: #f5f7fb;
            --text: #333333;
            --shadow: rgba(0, 102, 255, 0.1);
            --neon-glow: rgba(0, 212, 255, 0.6);
            --transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.1);
        }

        .dark-mode {
            --primary: #3399ff;
            --primary-dark: #66b3ff;
            --secondary: #00ffea;
            --accent: #c77dff;
            --dark: #121220;
            --light: #1a1a2e;
            --gray: #a0a0c0;
            --card-bg: #22223a;
            --body-bg: #0d0d1a;
            --text: #e0e0ff;
            --shadow: rgba(0, 0, 0, 0.4);
            --neon-glow: rgba(0, 255, 234, 0.5);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Vazirmatn', sans-serif;
            background-color: var(--body-bg);
            color: var(--text);
            line-height: 1.7;
            transition: var(--transition);
            text-align: right;
            overflow-x: hidden;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header Styles */
        header {
            background-color: var(--card-bg);
            box-shadow: 0 4px 20px var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 15px 0;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
            text-decoration: none;
        }

        .logo i {
            color: var(--secondary);
            font-size: 2rem;
        }

        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .logo-subtitle {
            font-size: 0.7rem;
            color: var(--gray);
            font-weight: 400;
        }

        /* Modern Mobile Menu */
        .mobile-menu-overlay {
            position: fixed;
            top: 0;
            right: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.8);
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            backdrop-filter: blur(5px);
        }

        .mobile-menu-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        .mobile-menu {
            position: fixed;
            top: 0;
            right: -100%;
            width: 85%;
            max-width: 350px;
            height: 100%;
            background-color: var(--card-bg);
            z-index: 1000;
            transition: var(--transition);
            padding: 30px;
            display: flex;
            flex-direction: column;
            box-shadow: -5px 0 30px rgba(0, 0, 0, 0.3);
        }

        .mobile-menu.active {
            right: 0;
        }

        .mobile-menu-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 40px;
            padding-bottom: 20px;
            border-bottom: 1px solid rgba(0, 102, 255, 0.2);
        }

        .mobile-menu-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary);
        }

        .mobile-menu-close {
            background: none;
            border: none;
            color: var(--text);
            font-size: 1.5rem;
            cursor: pointer;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .mobile-menu-close:hover {
            background-color: var(--body-bg);
            color: var(--primary);
        }

        .mobile-nav {
            flex: 1;
        }

        .mobile-nav ul {
            list-style: none;
        }

        .mobile-nav ul li {
            margin-bottom: 15px;
        }

        .mobile-nav ul li a {
            display: flex;
            align-items: center;
            gap: 15px;
            text-decoration: none;
            color: var(--text);
            font-size: 1.1rem;
            padding: 15px;
            border-radius: 12px;
            transition: var(--transition);
        }

        .mobile-nav ul li a i {
            color: var(--secondary);
            font-size: 1.2rem;
            width: 24px;
        }

        .mobile-nav ul li a:hover {
            background-color: var(--body-bg);
            color: var(--primary);
            transform: translateX(-10px);
        }

        .mobile-menu-footer {
            padding-top: 20px;
            border-top: 1px solid rgba(0, 102, 255, 0.2);
            display: flex;
            justify-content: center;
        }

        .mobile-theme-toggle {
            background: linear-gradient(to left, var(--primary), var(--secondary));
            color: white;
            border: none;
            padding: 12px 30px;
            border-radius: 25px;
            font-family: 'Vazirmatn', sans-serif;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }

        .mobile-theme-toggle:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 15px var(--shadow);
        }

        /* Desktop Navigation */
        .desktop-nav {
            display: flex;
            align-items: center;
        }

        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 35px;
        }

        .desktop-nav ul li a {
            text-decoration: none;
            color: var(--text);
            font-weight: 500;
            transition: var(--transition);
            position: relative;
            padding: 5px 0;
        }

        .desktop-nav ul li a:hover {
            color: var(--primary);
        }

        .desktop-nav ul li a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            right: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(to left, var(--primary), var(--secondary));
            transition: var(--transition);
        }

        .desktop-nav ul li a:hover::after {
            width: 100%;
        }

        .header-right {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .theme-toggle {
            background: none;
            border: none;
            color: var(--text);
            font-size: 1.3rem;
            cursor: pointer;
            transition: var(--transition);
            width: 45px;
            height: 45px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .theme-toggle:hover {
            background-color: var(--body-bg);
            color: var(--primary);
            transform: rotate(30deg);
        }

        .mobile-menu-btn {
            display: none;
            background: linear-gradient(to left, var(--primary), var(--secondary));
            color: white;
            border: none;
            width: 50px;
            height: 50px;
            border-radius: 12px;
            font-size: 1.3rem;
            cursor: pointer;
            transition: var(--transition);
        }

        .mobile-menu-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 15px var(--shadow);
        }

        /* Breadcrumb */
        .breadcrumb {
            padding: 30px 0 15px;
            color: var(--gray);
            font-size: 0.95rem;
        }

        .breadcrumb a {
            color: var(--gray);
            text-decoration: none;
            transition: var(--transition);
        }

        .breadcrumb a:hover {
            color: var(--primary);
        }

        .breadcrumb span {
            margin: 0 8px;
        }

        /* Main Content Layout */
        .main-content {
            display: flex;
            gap: 40px;
            margin: 40px 0;
        }

        .content-area {
            flex: 3;
        }

        .sidebar {
            flex: 1;
            min-width: 300px;
        }

        /* Article Header */
        .article-header {
            margin-bottom: 40px;
        }

        .article-header h1 {
            font-size: 2.5rem;
            margin-bottom: 20px;
            color: var(--primary);
            line-height: 1.3;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 25px;
            color: var(--gray);
            font-size: 0.95rem;
            margin-bottom: 25px;
            padding-bottom: 20px;
            border-bottom: 1px solid rgba(0, 102, 255, 0.1);
        }

        .article-meta span {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .article-image {
            width: 100%;
            border-radius: 18px;
            overflow: hidden;
            margin-bottom: 40px;
            box-shadow: 0 10px 30px var(--shadow);
        }

        .article-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: var(--transition);
        }

        .article-image img:hover {
            transform: scale(1.02);
        }

        /* Article Content */
        .article-content {
            font-size: 1.1rem;
            line-height: 1.8;
        }

        .article-content h2 {
            font-size: 1.8rem;
            color: var(--primary);
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid rgba(0, 102, 255, 0.2);
        }

        .article-content h3 {
            font-size: 1.5rem;
            color: var(--secondary);
            margin: 30px 0 15px;
        }

        .article-content p {
            margin-bottom: 25px;
        }

        .article-content ul, .article-content ol {
            margin-right: 25px;
            margin-bottom: 25px;
        }

        .article-content li {
            margin-bottom: 10px;
        }

        .highlight-box {
            background-color: rgba(0, 102, 255, 0.1);
            border-right: 4px solid var(--primary);
            padding: 25px;
            border-radius: 12px;
            margin: 30px 0;
        }

        .highlight-box h4 {
            color: var(--primary);
            margin-bottom: 15px;
            font-size: 1.3rem;
        }

        .feature-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }

        .feature-item {
            background-color: var(--card-bg);
            padding: 25px;
            border-radius: 12px;
            box-shadow: 0 5px 15px var(--shadow);
            transition: var(--transition);
            border: 1px solid rgba(0, 102, 255, 0.1);
        }

        .feature-item:hover {
            transform: translateY(-5px);
            border-color: var(--secondary);
        }

        .feature-item i {
            font-size: 2rem;
            color: var(--secondary);
            margin-bottom: 15px;
        }

        .feature-item h4 {
            color: var(--primary);
            margin-bottom: 10px;
        }

        /* Tool Button */
        .tool-button-container {
            text-align: center;
            margin: 60px 0 40px;
            padding: 40px;
            background: linear-gradient(135deg, rgba(0, 102, 255, 0.1), rgba(0, 212, 255, 0.1));
            border-radius: 18px;
        }

        .tool-button {
            display: inline-flex;
            align-items: center;
            gap: 15px;
            background: linear-gradient(to left, var(--primary), var(--secondary));
            color: white;
            padding: 20px 50px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 10px 30px var(--shadow);
            border: none;
            cursor: pointer;
            font-family: 'Vazirmatn', sans-serif;
            font-size: 1.2rem;
        }

        .tool-button:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px var(--shadow);
        }

        /* Share Section */
        .share-section {
            background-color: var(--card-bg);
            padding: 30px;
            border-radius: 18px;
            margin: 40px 0;
            box-shadow: 0 10px 25px var(--shadow);
            text-align: center;
        }

        .share-section h3 {
            color: var(--primary);
            margin-bottom: 25px;
            font-size: 1.5rem;
        }

        .share-buttons {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        .share-btn {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 15px 25px;
            border-radius: 12px;
            text-decoration: none;
            color: white;
            font-weight: 600;
            transition: var(--transition);
            min-width: 140px;
            justify-content: center;
        }

        .share-btn:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
        }

        .share-btn.telegram { background-color: #0088cc; }
        .share-btn.twitter { background-color: #1da1f2; }
        .share-btn.linkedin { background-color: #0077b5; }
        .share-btn.whatsapp { background-color: #25d366; }
        .share-btn.email { background-color: var(--accent); }

        /* Sidebar Styles */
        .sidebar-widget {
            background-color: var(--card-bg);
            border-radius: 18px;
            padding: 25px;
            margin-bottom: 30px;
            box-shadow: 0 10px 25px var(--shadow);
            border: 1px solid rgba(0, 102, 255, 0.1);
        }

        .sidebar-widget h3 {
            color: var(--primary);
            margin-bottom: 25px;
            font-size: 1.3rem;
            padding-bottom: 15px;
            border-bottom: 2px solid rgba(0, 102, 255, 0.2);
            position: relative;
        }

        .sidebar-widget h3::after {
            content: '';
            position: absolute;
            bottom: -2px;
            right: 0;
            width: 60px;
            height: 2px;
            background: linear-gradient(to left, var(--primary), var(--secondary));
        }

        /* News Item */
        .news-item {
            display: flex;
            gap: 15px;
            margin-bottom: 20px;
            padding-bottom: 20px;
            border-bottom: 1px solid rgba(0, 102, 255, 0.1);
            transition: var(--transition);
        }

        .news-item:hover {
            transform: translateX(-5px);
        }

        .news-item:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }

        .news-image {
            width: 90px;
            height: 70px;
            border-radius: 10px;
            overflow: hidden;
            flex-shrink: 0;
        }

        .news-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .news-item:hover .news-image img {
            transform: scale(1.1);
        }

        .news-content h4 {
            font-size: 1rem;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .news-content h4 a {
            color: var(--text);
            text-decoration: none;
            transition: var(--transition);
        }

        .news-content h4 a:hover {
            color: var(--primary);
        }

        .news-meta {
            display: flex;
            gap: 15px;
            font-size: 0.85rem;
            color: var(--gray);
        }

        /* Related Topics */
        .related-topics {
            margin: 60px 0 40px;
        }

        .related-topics h2 {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 40px;
            text-align: center;
            position: relative;
        }

        .related-topics h2::after {
            content: '';
            position: absolute;
            bottom: -12px;
            right: 50%;
            transform: translateX(50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(to left, var(--primary), var(--secondary));
            border-radius: 2px;
        }

        .topics-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 30px;
        }

        .topic-card {
            background-color: var(--card-bg);
            border-radius: 18px;
            overflow: hidden;
            box-shadow: 0 10px 25px var(--shadow);
            transition: var(--transition);
            border: 1px solid rgba(0, 102, 255, 0.1);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .topic-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px var(--shadow);
            border-color: var(--primary);
        }

        .topic-card-icon {
            height: 150px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary-dark), var(--accent));
            position: relative;
            overflow: hidden;
        }

        .topic-card-icon i {
            font-size: 3.5rem;
            color: white;
            opacity: 0.9;
            z-index: 1;
        }

        .topic-card-content {
            padding: 25px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .topic-card-content h3 {
            margin-bottom: 15px;
            font-size: 1.3rem;
            color: var(--primary);
            line-height: 1.4;
        }

        .topic-card-content p {
            color: var(--gray);
            margin-bottom: 20px;
            font-size: 0.95rem;
            flex: 1;
        }

        .topic-card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--secondary);
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
            align-self: flex-start;
        }

        .topic-card-link:hover {
            color: var(--primary);
            gap: 12px;
        }

        /* Footer */
        footer {
            background-color: var(--dark);
            color: white;
            padding: 80px 0 25px;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 45px;
            margin-bottom: 50px;
        }

        .footer-column h3 {
            font-size: 1.4rem;
            margin-bottom: 30px;
            color: var(--secondary);
            position: relative;
            padding-bottom: 12px;
        }

        .footer-column h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            right: 0;
            width: 50px;
            height: 3px;
            background: linear-gradient(to left, var(--primary), var(--secondary));
            border-radius: 2px;
        }

        .footer-column ul {
            list-style: none;
        }

        .footer-column ul li {
            margin-bottom: 15px;
        }

        .footer-column ul li a {
            color: #b0b0d0;
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-column ul li a i {
            font-size: 0.9rem;
            color: var(--secondary);
        }

        .footer-column ul li a:hover {
            color: var(--secondary);
            padding-right: 8px;
        }

        .social-icons {
            display: flex;
            gap: 15px;
            margin-top: 25px;
        }

        .social-icons a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 45px;
            height: 45px;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            color: white;
            text-decoration: none;
            transition: var(--transition);
            font-size: 1.1rem;
        }

        .social-icons a:hover {
            background: linear-gradient(to left, var(--primary), var(--secondary));
            transform: translateY(-5px);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #b0b0d0;
            font-size: 0.9rem;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

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

        .footer-links a {
            color: #b0b0d0;
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--secondary);
        }

        /* Responsive Design */
        @media (max-width: 1100px) {
            .main-content {
                flex-direction: column;
            }
            
            .sidebar {
                min-width: 100%;
            }
            
            .feature-list {
                grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            }
        }

        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            
            .mobile-menu-btn {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            
            .article-header h1 {
                font-size: 2rem;
            }
            
            .share-buttons {
                flex-direction: column;
                align-items: center;
            }
            
            .share-btn {
                width: 100%;
                max-width: 250px;
            }
            
            .topics-grid {
                grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            }
            
            .footer-content {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }

        @media (max-width: 576px) {
            .article-header h1 {
                font-size: 1.7rem;
            }
            
            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 15px;
            }
            
            .tool-button {
                padding: 18px 30px;
                font-size: 1.1rem;
            }
            
            .feature-list {
                grid-template-columns: 1fr;
            }
            
            .topics-grid {
                grid-template-columns: 1fr;
            }
            
            .news-item {
                flex-direction: column;
            }
            
            .news-image {
                width: 100%;
                height: 150px;
            }
        }