/* Partners Section - Modern Design con gradient grigio più scuro */
.partners-section {
    background: linear-gradient(135deg, #334155 0%, #475569 25%, #525f72 50%, #5d6a7d 75%, #687588 100%);
    padding: 120px 0;
    position: relative;
    overflow: hidden;
    border-top: 1px solid rgba(139, 92, 246, 0.2);
}

.partners-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(139, 92, 246, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(74, 125, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 40% 80%, rgba(236, 72, 153, 0.06) 0%, transparent 50%);
    pointer-events: none;
}

.partners-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 2;
}

/* Header Section */
.partners-header {
    text-align: center;
    margin-bottom: 80px;
    animation: fadeInUp 1s ease-out;
}

.partners-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.gradient-text {
    background: linear-gradient(135deg, #8b5cf6 0%, #4a7dff 50%, #ec4899 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    background-size: 200% 200%;
    animation: gradientShift 4s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.partners-subtitle {
    font-size: 1.3rem;
    color: #94a3b8;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
    font-weight: 400;
}

/* Partners Grid */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

/* Partner Cards - Rettangolari con contrasto equilibrato */
.partner-card {
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: 16px;
    padding: 25px 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100px;
    aspect-ratio: 3/2;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 
        0 8px 25px rgba(0, 0, 0, 0.15),
        0 2px 10px rgba(0, 0, 0, 0.1);
}

.partner-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.12) 0%, rgba(74, 125, 255, 0.12) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.partner-card:hover::before {
    opacity: 1;
}

.partner-card:hover {
    border-color: rgba(139, 92, 246, 0.4);
    box-shadow: 
        0 12px 30px rgba(0, 0, 0, 0.18),
        0 0 20px rgba(139, 92, 246, 0.2);
}

.partner-card img {
    max-width: 95%;
    max-height: 80px;
    width: auto;
    height: auto;
    object-fit: contain;
    filter: brightness(0.95) contrast(1.05);
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.partner-card:hover img {
    filter: brightness(1.1) contrast(1.15);
}

/* Animation on scroll */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

[data-scroll="fade-up"] {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-scroll="fade-up"].visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .partners-section {
        padding: 100px 0;
    }
    
    .partners-title {
        font-size: 3rem;
    }
    
    .partners-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
        gap: 18px;
    }
    
    .partner-card {
        padding: 20px 16px;
        min-height: 90px;
    }
    
    .partner-card img {
        max-height: 55px;
    }
}

@media (max-width: 768px) {
    .partners-section {
        padding: 80px 0;
    }
    
    .partners-container {
        padding: 0 16px;
    }
    
    .partners-header {
        margin-bottom: 60px;
    }
    
    .partners-title {
        font-size: 2.5rem;
        margin-bottom: 20px;
    }
    
    .partners-subtitle {
        font-size: 1.1rem;
    }
    
    .partners-grid {
        grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
        gap: 16px;
    }
    
    .partner-card {
        padding: 18px 14px;
        min-height: 80px;
        border-radius: 14px;
    }
    
    .partner-card img {
        max-height: 50px;
    }
    
    .partner-card:hover {
        border-color: rgba(139, 92, 246, 0.4);
        box-shadow: 
            0 10px 25px rgba(0, 0, 0, 0.15),
            0 0 15px rgba(139, 92, 246, 0.2);
    }
}

@media (max-width: 480px) {
    .partners-title {
        font-size: 2rem;
    }
    
    .partners-grid {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
        gap: 14px;
    }
    
    .partner-card {
        padding: 16px 12px;
        min-height: 70px;
    }
    
    .partner-card img {
        max-height: 45px;
    }
}

/* Loading Animation - DISABLED */
.partner-card {
    opacity: 1;
    transform: none;
}

.partner-card:nth-child(1) { animation-delay: 0s; }
.partner-card:nth-child(2) { animation-delay: 0s; }
.partner-card:nth-child(3) { animation-delay: 0s; }
.partner-card:nth-child(4) { animation-delay: 0s; }
.partner-card:nth-child(5) { animation-delay: 0s; }
.partner-card:nth-child(6) { animation-delay: 0s; }
.partner-card:nth-child(7) { animation-delay: 0s; }
.partner-card:nth-child(8) { animation-delay: 0s; }
.partner-card:nth-child(9) { animation-delay: 0s; }
.partner-card:nth-child(10) { animation-delay: 0s; }
.partner-card:nth-child(11) { animation-delay: 0s; }
.partner-card:nth-child(12) { animation-delay: 0s; }
.partner-card:nth-child(13) { animation-delay: 0s; }
.partner-card:nth-child(14) { animation-delay: 0s; }
.partner-card:nth-child(15) { animation-delay: 0s; }

@keyframes cardSlideIn {
    0%, 100% {
        opacity: 1;
        transform: none;
    }
}

/* Focus states for accessibility - simplified */
.partner-card:focus {
    outline: none;
    border-color: rgba(139, 92, 246, 0.6);
    box-shadow: 
        0 0 0 2px rgba(139, 92, 246, 0.3),
        0 8px 25px rgba(0, 0, 0, 0.15);
}

.partner-card:focus img {
    filter: brightness(1.05) contrast(1.1);
}