/**
 * تنسيقات نظام مشاركة المتجر - تصميم زجاجي حديث
 * Modern Store Share System - Apple Glass Design
 * Version: 4.0 - Enhanced Glass Design with Mobile Optimization
 */

/* الحاوي الرئيسي - تصميم زجاجي محسن */
.modern-store-share-section {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.15) 0%, 
        rgba(255, 255, 255, 0.08) 30%,
        rgba(255, 255, 255, 0.12) 70%,
        rgba(255, 255, 255, 0.18) 100%);
    backdrop-filter: blur(25px) saturate(180%);
    -webkit-backdrop-filter: blur(25px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 28px;
    position: relative;
    overflow: hidden;
    box-shadow: 
        0 12px 40px rgba(0, 0, 0, 0.12),
        0 4px 16px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.3),
        inset 0 -1px 0 rgba(255, 255, 255, 0.1);
    margin: 3rem 0;
    padding: 0;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.modern-store-share-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, 
        transparent 25%, 
        rgba(255, 255, 255, 0.15) 50%, 
        transparent 75%);
    pointer-events: none;
    z-index: 1;
    opacity: 0.6;
}

.modern-store-share-section:hover {
    transform: translateY(-2px);
    box-shadow: 
        0 16px 48px rgba(0, 0, 0, 0.15),
        0 6px 20px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.35),
        inset 0 -1px 0 rgba(255, 255, 255, 0.15);
}

@keyframes glassShimmer {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

/* بطاقة المشاركة - تصميم زجاجي محسن */
.share-card {
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(20px) saturate(150%);
    -webkit-backdrop-filter: blur(20px) saturate(150%);
    border-radius: 24px;
    padding: 2.5rem;
    border: 1px solid rgba(255, 255, 255, 0.18);
    position: relative;
    z-index: 2;
    box-shadow: 
        0 10px 36px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.2),
        inset 0 -1px 0 rgba(255, 255, 255, 0.08);
    transition: all 0.3s ease;
}

.share-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(255, 255, 255, 0.4), 
        transparent);
}

/* رأس المشاركة */
.share-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.share-icon {
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.25) 0%, 
        rgba(255, 255, 255, 0.15) 50%,
        rgba(255, 255, 255, 0.2) 100%);
    backdrop-filter: blur(15px) saturate(150%);
    -webkit-backdrop-filter: blur(15px) saturate(150%);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    box-shadow: 
        0 12px 40px rgba(0, 0, 0, 0.15),
        0 4px 16px rgba(0, 0, 0, 0.1),
        inset 0 2px 0 rgba(255, 255, 255, 0.4),
        inset 0 -2px 0 rgba(255, 255, 255, 0.1);
    animation: glassFloat 8s ease-in-out infinite;
    position: relative;
    overflow: hidden;
}

.share-icon::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(255, 255, 255, 0.3), 
        transparent);
    animation: glassShimmer 3s ease-in-out infinite;
    pointer-events: none;
}

.share-icon i {
    font-size: 2rem;
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

@keyframes glassFloat {
    0%, 100% { 
        transform: translateY(0px) rotate(0deg); 
        opacity: 1;
    }
    25% { 
        transform: translateY(-4px) rotate(1deg); 
        opacity: 0.9;
    }
    50% { 
        transform: translateY(-8px) rotate(0deg); 
        opacity: 1;
    }
    75% { 
        transform: translateY(-4px) rotate(-1deg); 
        opacity: 0.9;
    }
}

@keyframes glassShimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.share-title {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.95) 0%,
        rgba(255, 255, 255, 0.8) 50%,
        rgba(255, 255, 255, 0.95) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    letter-spacing: -0.02em;
    text-align: center;
    position: relative;
}

.share-subtitle {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.1rem;
    margin: 0;
    font-weight: 500;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
    line-height: 1.4;
    text-align: center;
    margin-bottom: 2rem;
}

/* منصات المشاركة - تصميم زجاجي */
.share-platforms {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1.2rem;
    margin: 2rem 0;
}

.share-platform {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.18) 0%,
        rgba(255, 255, 255, 0.12) 50%,
        rgba(255, 255, 255, 0.15) 100%);
    backdrop-filter: blur(15px) saturate(120%);
    -webkit-backdrop-filter: blur(15px) saturate(120%);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 1.8rem 1.2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
    overflow: hidden;
    min-height: 140px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    transform-style: preserve-3d;
    box-shadow: 
        0 4px 16px rgba(0, 0, 0, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.share-platform::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(255, 255, 255, 0.15), 
        transparent);
    transition: left 0.6s ease;
}

.share-platform:hover::before {
    left: 100%;
}

.share-platform:hover {
    transform: translateY(-10px) scale(1.05) rotateX(5deg);
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.25) 0%,
        rgba(255, 255, 255, 0.18) 50%,
        rgba(255, 255, 255, 0.22) 100%);
    border-color: rgba(255, 255, 255, 0.35);
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.15),
        0 8px 24px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.3),
        inset 0 -1px 0 rgba(255, 255, 255, 0.1);
}

.platform-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.8rem;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    box-shadow: 
        0 6px 20px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.platform-icon::before {
    content: '';
    position: absolute;
    top: 1px;
    left: 1px;
    right: 1px;
    bottom: 1px;
    border-radius: 50%;
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.1), 
        transparent);
    pointer-events: none;
}

.platform-icon i {
    font-size: 1.6rem;
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    z-index: 1;
}

.platform-name {
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
}

.platform-hover {
    position: absolute;
    top: 12px;
    right: 12px;
    opacity: 0;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.platform-hover i {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.8rem;
}

.share-platform:hover .platform-hover {
    opacity: 1;
    transform: scale(1.1);
}

/* تأثيرات خاصة لكل منصة - تصميم زجاجي متقدم */
.share-platform[data-platform="facebook"]:hover {
    background: linear-gradient(135deg, 
        rgba(24, 119, 242, 0.25) 0%,
        rgba(24, 119, 242, 0.15) 50%,
        rgba(24, 119, 242, 0.2) 100%);
    border-color: rgba(24, 119, 242, 0.5);
    box-shadow: 
        0 12px 40px rgba(24, 119, 242, 0.25),
        0 4px 16px rgba(24, 119, 242, 0.15),
        inset 0 2px 0 rgba(255, 255, 255, 0.4),
        inset 0 -1px 0 rgba(24, 119, 242, 0.2);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
}

.share-platform[data-platform="facebook"] .platform-icon {
    background: linear-gradient(135deg, 
        rgba(24, 119, 242, 0.9) 0%,
        rgba(24, 119, 242, 0.7) 50%,
        rgba(24, 119, 242, 0.8) 100%);
    box-shadow: 
        0 4px 16px rgba(24, 119, 242, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.share-platform[data-platform="whatsapp"]:hover {
    background: linear-gradient(135deg, 
        rgba(37, 211, 102, 0.25) 0%,
        rgba(37, 211, 102, 0.15) 50%,
        rgba(37, 211, 102, 0.2) 100%);
    border-color: rgba(37, 211, 102, 0.5);
    box-shadow: 
        0 12px 40px rgba(37, 211, 102, 0.25),
        0 4px 16px rgba(37, 211, 102, 0.15),
        inset 0 2px 0 rgba(255, 255, 255, 0.4),
        inset 0 -1px 0 rgba(37, 211, 102, 0.2);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
}

.share-platform[data-platform="whatsapp"] .platform-icon {
    background: linear-gradient(135deg, 
        rgba(37, 211, 102, 0.9) 0%,
        rgba(37, 211, 102, 0.7) 50%,
        rgba(37, 211, 102, 0.8) 100%);
    box-shadow: 
        0 4px 16px rgba(37, 211, 102, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.share-platform[data-platform="twitter"]:hover {
    background: linear-gradient(135deg, 
        rgba(29, 161, 242, 0.25) 0%,
        rgba(29, 161, 242, 0.15) 50%,
        rgba(29, 161, 242, 0.2) 100%);
    border-color: rgba(29, 161, 242, 0.5);
    box-shadow: 
        0 12px 40px rgba(29, 161, 242, 0.25),
        0 4px 16px rgba(29, 161, 242, 0.15),
        inset 0 2px 0 rgba(255, 255, 255, 0.4),
        inset 0 -1px 0 rgba(29, 161, 242, 0.2);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
}

.share-platform[data-platform="twitter"] .platform-icon {
    background: linear-gradient(135deg, 
        rgba(29, 161, 242, 0.9) 0%,
        rgba(29, 161, 242, 0.7) 50%,
        rgba(29, 161, 242, 0.8) 100%);
    box-shadow: 
        0 4px 16px rgba(29, 161, 242, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.share-platform[data-platform="telegram"]:hover {
    background: linear-gradient(135deg, 
        rgba(0, 136, 204, 0.25) 0%,
        rgba(0, 136, 204, 0.15) 50%,
        rgba(0, 136, 204, 0.2) 100%);
    border-color: rgba(0, 136, 204, 0.5);
    box-shadow: 
        0 12px 40px rgba(0, 136, 204, 0.25),
        0 4px 16px rgba(0, 136, 204, 0.15),
        inset 0 2px 0 rgba(255, 255, 255, 0.4),
        inset 0 -1px 0 rgba(0, 136, 204, 0.2);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
}

.share-platform[data-platform="telegram"] .platform-icon {
    background: linear-gradient(135deg, 
        rgba(0, 136, 204, 0.9) 0%,
        rgba(0, 136, 204, 0.7) 50%,
        rgba(0, 136, 204, 0.8) 100%);
    box-shadow: 
        0 4px 16px rgba(0, 136, 204, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.share-platform[data-platform="copy"]:hover {
    background: linear-gradient(135deg, 
        rgba(108, 117, 125, 0.25) 0%,
        rgba(108, 117, 125, 0.15) 50%,
        rgba(108, 117, 125, 0.2) 100%);
    border-color: rgba(108, 117, 125, 0.5);
    box-shadow: 
        0 12px 40px rgba(108, 117, 125, 0.25),
        0 4px 16px rgba(108, 117, 125, 0.15),
        inset 0 2px 0 rgba(255, 255, 255, 0.4),
        inset 0 -1px 0 rgba(108, 117, 125, 0.2);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
}

.share-platform[data-platform="copy"] .platform-icon {
    background: linear-gradient(135deg, 
        rgba(108, 117, 125, 0.9) 0%,
        rgba(108, 117, 125, 0.7) 50%,
        rgba(108, 117, 125, 0.8) 100%);
    box-shadow: 
        0 4px 16px rgba(108, 117, 125, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

/* ألوان المنصات المختلفة مع تأثيرات زجاجية محسنة - للتوافق مع الأنماط القديمة */
.share-platform.facebook:hover {
    background: linear-gradient(135deg, 
        rgba(24, 119, 242, 0.25), 
        rgba(24, 119, 242, 0.18),
        rgba(24, 119, 242, 0.22));
    border-color: rgba(24, 119, 242, 0.4);
    box-shadow: 
        0 20px 60px rgba(24, 119, 242, 0.2),
        0 8px 24px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.share-platform.facebook .platform-icon {
    background: linear-gradient(135deg, 
        rgba(24, 119, 242, 0.35), 
        rgba(24, 119, 242, 0.25));
    border-color: rgba(24, 119, 242, 0.4);
}

.share-platform.whatsapp:hover {
    background: linear-gradient(135deg, 
        rgba(37, 211, 102, 0.25), 
        rgba(37, 211, 102, 0.18),
        rgba(37, 211, 102, 0.22));
    border-color: rgba(37, 211, 102, 0.4);
    box-shadow: 
        0 20px 60px rgba(37, 211, 102, 0.2),
        0 8px 24px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.share-platform.whatsapp .platform-icon {
    background: linear-gradient(135deg, 
        rgba(37, 211, 102, 0.35), 
        rgba(37, 211, 102, 0.25));
    border-color: rgba(37, 211, 102, 0.4);
}

.share-platform.twitter:hover {
    background: linear-gradient(135deg, 
        rgba(29, 161, 242, 0.25), 
        rgba(29, 161, 242, 0.18),
        rgba(29, 161, 242, 0.22));
    border-color: rgba(29, 161, 242, 0.4);
    box-shadow: 
        0 20px 60px rgba(29, 161, 242, 0.2),
        0 8px 24px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.share-platform.twitter .platform-icon {
    background: linear-gradient(135deg, 
        rgba(29, 161, 242, 0.35), 
        rgba(29, 161, 242, 0.25));
    border-color: rgba(29, 161, 242, 0.4);
}

.share-platform.telegram:hover {
    background: linear-gradient(135deg, 
        rgba(0, 136, 204, 0.25), 
        rgba(0, 136, 204, 0.18),
        rgba(0, 136, 204, 0.22));
    border-color: rgba(0, 136, 204, 0.4);
    box-shadow: 
        0 20px 60px rgba(0, 136, 204, 0.2),
        0 8px 24px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.share-platform.telegram .platform-icon {
    background: linear-gradient(135deg, 
        rgba(0, 136, 204, 0.35), 
        rgba(0, 136, 204, 0.25));
    border-color: rgba(0, 136, 204, 0.4);
}

.share-platform.copy-link:hover {
    background: linear-gradient(135deg, 
        rgba(107, 114, 128, 0.25), 
        rgba(107, 114, 128, 0.18),
        rgba(107, 114, 128, 0.22));
    border-color: rgba(107, 114, 128, 0.4);
    box-shadow: 
        0 20px 60px rgba(107, 114, 128, 0.2),
        0 8px 24px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.share-platform.copy-link .platform-icon {
    background: linear-gradient(135deg, 
        rgba(107, 114, 128, 0.35), 
        rgba(107, 114, 128, 0.25));
    border-color: rgba(107, 114, 128, 0.4);
}

/* إحصائيات المشاركة - تصميم زجاجي محسن */
.share-stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.stat-item {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.15) 0%,
        rgba(255, 255, 255, 0.1) 100%);
    backdrop-filter: blur(12px) saturate(120%);
    -webkit-backdrop-filter: blur(12px) saturate(120%);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    padding: 1rem 1.5rem;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    box-shadow: 
        0 4px 16px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    font-size: 0.95rem;
}

.stat-item:hover {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.2) 0%,
        rgba(255, 255, 255, 0.15) 100%);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-4px) scale(1.02);
    box-shadow: 
        0 8px 24px rgba(0, 0, 0, 0.12),
        inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.stat-item i {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
    opacity: 0.8;
}

/* تأثيرات الضغط */
.share-platform:active {
    transform: translateY(-6px) scale(1.02) rotateX(2deg);
    transition: all 0.15s ease;
}

/* تنسيقات الموبايل المحسنة */
@media (max-width: 768px) {
    .modern-store-share-section {
        margin: 2rem 0;
        border-radius: 24px;
    }
    
    .share-card {
        padding: 2rem 1.5rem;
        border-radius: 20px;
    }
    
    .share-platforms {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
        margin: 1.5rem 0;
    }
    
    .share-platform {
        padding: 1.5rem 1rem;
        min-height: 120px;
        border-radius: 18px;
    }
    
    .share-platform:hover {
        transform: translateY(-6px) scale(1.03);
    }
    
    .platform-icon {
        width: 55px;
        height: 55px;
    }
    
    .platform-icon i {
        font-size: 1.4rem;
    }
    
    .platform-name {
        font-size: 0.9rem;
        font-weight: 600;
    }
    
    .share-title {
        font-size: 1.4rem;
        margin-bottom: 0.5rem;
    }
    
    .share-subtitle {
        font-size: 0.9rem;
        margin-bottom: 1.5rem;
    }
    
    .share-header {
        text-align: center;
        margin-bottom: 1.5rem;
    }
    
    .share-icon i {
        font-size: 2rem;
    }
    
    .share-stats {
        flex-direction: row;
        justify-content: center;
        gap: 1rem;
        flex-wrap: wrap;
    }
    
    .stat-item {
        font-size: 0.85rem;
        padding: 0.8rem 1.2rem;
        border-radius: 14px;
        min-width: auto;
    }
}

/* تنسيقات الموبايل الصغير */
@media (max-width: 480px) {
    .share-card {
        padding: 1.5rem 1rem;
    }
    
    .share-platforms {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.8rem;
    }
    
    .share-platform {
        padding: 1.2rem 0.8rem;
        min-height: 100px;
        border-radius: 16px;
    }
    
    .platform-icon {
        width: 45px;
        height: 45px;
    }
    
    .platform-icon i {
        font-size: 1.2rem;
    }
    
    .platform-name {
        font-size: 0.8rem;
    }
    
    .share-title {
        font-size: 1.2rem;
    }
    
    .share-subtitle {
        font-size: 0.8rem;
    }
    
    .share-stats {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .stat-item {
        font-size: 0.8rem;
        padding: 0.6rem 1rem;
        text-align: center;
    }
}

/* تحسينات الأداء */
.share-platform,
.share-icon,
.platform-icon {
    will-change: transform;
}

/* دعم المتصفحات القديمة */
@supports not (backdrop-filter: blur(10px)) {
    .modern-store-share-section {
        background: rgba(255, 255, 255, 0.9);
    }
    
    .share-card {
        background: rgba(255, 255, 255, 0.95);
    }
    
    .share-platform {
        background: rgba(255, 255, 255, 0.8);
    }
}

/* نهاية ملف modern-store-share.css */