:root {
            --primary: #6c5ce7;
            --secondary: #a29bfe;
            --accent: #fd79a8;
            --dark: #2d3436;
            --light: #f7f7f7;
            --success: #00b894;
            --warning: #fdcb6e;
            --danger: #d63031;
            --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Vazirmatn', sans-serif;
        }
        
        body {
            background: linear-gradient(135deg, #f5f7ff 0%, #f0f2ff 100%);
            color: var(--dark);
            line-height: 1.7;
            min-height: 100vh;
            padding: 0;
            position: relative;
            overflow-x: hidden;
        }
        
        body::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200"><rect fill="none" width="200" height="200"/><path fill="rgba(108, 92, 231, 0.03)" d="M46.9,20.1c-12.7,1.9-22.2,13.1-22.2,26.2c0,14.7,11.9,26.6,26.6,26.6c14.7,0,26.6-11.9,26.6-26.6 c0-11.1-6.8-20.6-16.5-24.6"/></svg>');
            opacity: 0.7;
            z-index: -1;
        }
        
        .container {
            max-width: 1600px;
            margin: 0 auto;
            padding: 20px;
        }
        
        /* هدر جدید */
        header {
            background: linear-gradient(120deg, #6c5ce7 0%, #a29bfe 100%);
            color: white;
            padding: 30px 20px;
            border-radius: 20px;
            box-shadow: var(--card-shadow);
            margin-bottom: 30px;
            position: relative;
            overflow: hidden;
            text-align: center;
        }
        
        header::before {
            content: "";
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 70%);
            transform: rotate(30deg);
        }
        
        .header-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
        }
        
        h1 {
            font-size: 2.8rem;
            margin-bottom: 15px;
            font-weight: 800;
            text-shadow: 0 2px 4px rgba(0,0,0,0.1);
        }
        
        .subtitle {
            font-size: 1.3rem;
            opacity: 0.9;
            margin-bottom: 25px;
            font-weight: 300;
        }
        
        .search-container {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 50px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        
        .search-container input {
            flex: 1;
            padding: 18px 25px;
            border: none;
            background: rgba(255, 255, 255, 0.25);
            color: white;
            font-size: 1.1rem;
            outline: none;
            transition: var(--transition);
        }
        
        .search-container input::placeholder {
            color: rgba(255, 255, 255, 0.8);
        }
        
        .search-container input:focus {
            background: rgba(255, 255, 255, 0.35);
        }
        
        .search-container button {
            background: var(--accent);
            color: white;
            border: none;
            padding: 0 30px;
            font-size: 1.2rem;
            cursor: pointer;
            transition: var(--transition);
        }
        
        .search-container button:hover {
            background: #ff5a96;
        }
        
        .stats {
            display: flex;
            justify-content: center;
            gap: 25px;
            margin-top: 30px;
            flex-wrap: wrap;
        }
        
        .stat-card {
            background: rgba(255, 255, 255, 0.25);
            backdrop-filter: blur(10px);
            padding: 15px 25px;
            border-radius: 15px;
            text-align: center;
            min-width: 170px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: var(--transition);
        }
        
        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
        }
        
        .stat-card i {
            font-size: 2rem;
            margin-bottom: 10px;
            color: white;
        }
        
        .stat-card .count {
            font-size: 1.8rem;
            font-weight: 700;
            margin: 5px 0;
        }
        
        .content {
            display: flex;
            gap: 25px;
            flex-wrap: wrap;
        }
        
        .filters {
            background: white;
            border-radius: 20px;
            box-shadow: var(--card-shadow);
            padding: 25px;
            flex: 1;
            min-width: 300px;
            max-width: 350px;
            height: fit-content;
            position: sticky;
            top: 20px;
        }
        
        .filter-section {
            margin-bottom: 25px;
            padding-bottom: 20px;
            border-bottom: 1px solid #eee;
        }
        
        .filter-section:last-child {
            border-bottom: none;
        }
        
        .filter-title {
            font-size: 1.3rem;
            margin-bottom: 20px;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 600;
        }
        
        .filter-title i {
            background: rgba(108, 92, 231, 0.1);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
        }
        
        .filter-group {
            margin-bottom: 15px;
        }
        
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            color: #555;
        }
        
        input, select {
            width: 100%;
            padding: 14px 18px;
            border: 1px solid #e0e0e0;
            border-radius: 12px;
            font-size: 1rem;
            background: #fafafa;
            transition: var(--transition);
            color: #444;
        }
        
        input:focus, select:focus {
            outline: none;
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(162, 155, 254, 0.2);
            background: white;
        }
        
        .range-values {
            display: flex;
            justify-content: space-between;
            margin-top: 8px;
            font-size: 0.9rem;
            color: #777;
        }
        
        .filter-btn {
            background: linear-gradient(120deg, var(--accent) 0%, #ff8ab3 100%);
            color: white;
            border: none;
            padding: 17px;
            border-radius: 15px;
            font-size: 1.1rem;
            cursor: pointer;
            width: 100%;
            transition: var(--transition);
            font-weight: 600;
            box-shadow: 0 5px 15px rgba(253, 121, 168, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }
        
        .filter-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(253, 121, 168, 0.4);
        }
        
        .mobiles-grid {
            flex: 3;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
            gap: 30px;
        }
        
        .mobile-card {
            background: white;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
            position: relative;
        }
        
        .mobile-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
        }
        
        .brand-badge {
            position: absolute;
            top: 15px;
            left: 15px;
            background: white;
            padding: 8px 15px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
            z-index: 2;
        }
        
        .mobile-image {
            height: 200px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #f8f9ff 0%, #edf0ff 100%);
            position: relative;
            overflow: hidden;
        }
        
        .mobile-image::before {
            content: "";
            position: absolute;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(162, 155, 254, 0.1) 0%, rgba(255,255,255,0) 70%);
        }
        
        .mobile-image i {
            font-size: 120px;
            opacity: 0.7;
            z-index: 1;
        }
        
        .card-body {
            padding: 25px;
            flex-grow: 1;
        }
        
        .model {
            font-size: 1.9rem;
            margin-bottom: 15px;
            color: var(--dark);
            font-weight: 800;
            line-height: 1.3;
        }
        
        .price {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            margin: 15px 0;
            text-align: center;
            background: linear-gradient(120deg, #f0f2ff 0%, #e6e9ff 100%);
            padding: 15px;
            border-radius: 15px;
        }
        
        .specs-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
            gap: 15px;
            margin: 20px 0;
        }
        
        .spec-card {
            background: #f8f9ff;
            border-radius: 12px;
            padding: 15px;
            text-align: center;
            transition: var(--transition);
        }
        
        .spec-card:hover {
            transform: translateY(-3px);
            background: #f0f2ff;
        }
        
        .spec-card i {
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 8px;
        }
        
        .spec-title {
            font-size: 0.85rem;
            color: #777;
            margin-bottom: 5px;
        }
        
        .spec-value {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--dark);
        }
        
        .features {
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid #eee;
            color: #555;
            font-size: 1rem;
            line-height: 1.8;
        }
        
        .features ul {
            padding-right: 20px;
        }
        
        .features li {
            margin-bottom: 10px;
            position: relative;
        }
        
        .features li::before {
            content: "•";
            color: var(--accent);
            font-weight: bold;
            display: inline-block; 
            width: 1em;
            margin-right: -1em;
        }
        
        .card-footer {
            padding: 18px 25px;
            background: #f9f9ff;
            display: flex;
            justify-content: space-between;
            color: #777;
            font-size: 0.9rem;
            border-top: 1px solid #eee;
        }
        
        .category-badge {
            background: var(--secondary);
            color: white;
            padding: 5px 15px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
        }
        
        .no-results {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px;
            background: white;
            border-radius: 20px;
            box-shadow: var(--card-shadow);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }
        
        .no-results i {
            font-size: 5rem;
            color: #e0e0e0;
            margin-bottom: 25px;
        }
        
        .no-results h3 {
            font-size: 1.8rem;
            color: #777;
            margin-bottom: 15px;
        }
        
        @media (max-width: 1100px) {
            .content {
                flex-direction: column;
            }
            
            .filters {
                max-width: 100%;
                position: static;
            }
        }
        
        @media (max-width: 768px) {
            .mobiles-grid {
                grid-template-columns: 1fr;
            }
            
            h1 {
                font-size: 2.2rem;
            }
            
            header {
                padding: 25px 15px;
            }
        }
        
        .highlight {
            background-color: #fff9c4;
            padding: 2px 5px;
            border-radius: 4px;
            font-weight: bold;
        }
        
        .floating-btn {
            position: fixed;
            bottom: 25px;
            left: 25px;
            background: var(--primary);
            color: white;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            box-shadow: 0 5px 20px rgba(108, 92, 231, 0.4);
            cursor: pointer;
            z-index: 100;
            transition: var(--transition);
        }
        
        .floating-btn:hover {
            transform: translateY(-5px) rotate(15deg);
            box-shadow: 0 8px 25px rgba(108, 92, 231, 0.5);
        }