:root {
    --background-color: #000000;
    --text-color: #e5e7eb;
    --primary-blue: #2563eb;
    --border-color: rgba(255, 255, 255, 0.1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
}

.page-section {
    opacity: 0;
    animation: fadeIn 0.8s forwards;
    display: none;
}

.page-section:not(.hidden) {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

header {
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
}

header.scrolled {
    border-bottom-color: var(--border-color);
}

.nav-link.active {
    color: white;
    font-weight: 500;
}

.slogan-text {
    background: linear-gradient(to right, #a7b2c5, #ffffff, #a7b2c5);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: shine 5s linear infinite;
}

@keyframes shine {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}

.logo-container {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo-dynamic {
    border-radius: 50%;
    animation: pulse-glow 4s infinite ease-in-out;
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.3), 0 0 30px rgba(255, 215, 0, 0.2), 0 0 45px rgba(255, 215, 0, 0.1);
}

@keyframes pulse-glow {
    0%, 100% {
        transform: scale(1);
        filter: drop-shadow(0 0 10px rgba(255, 215, 0, 0.4));
    }
    50% {
        transform: scale(1.05);
        filter: drop-shadow(0 0 25px rgba(255, 215, 0, 0.7));
    }
}

.business-card {
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 1rem;
    transition: transform 0.3s ease, background-color 0.3s ease;
}

.business-card:hover {
    transform: translateY(-5px);
    background-color: rgba(255, 255, 255, 0.07);
}

.member-card {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.5s forwards;
}

.member-card:nth-child(1) { animation-delay: 0.1s; }
.member-card:nth-child(2) { animation-delay: 0.2s; }
.member-card:nth-child(3) { animation-delay: 0.3s; }
.member-card:nth-child(4) { animation-delay: 0.4s; }


@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.news-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 1.5rem;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    transition: background-color 0.3s ease;
}

.news-item:hover {
    background-color: rgba(255, 255, 255, 0.07);
}

.contact-input {
    width: 100%;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    color: var(--text-color);
    transition: border-color 0.3s ease, background-color 0.3s ease;
}

.contact-input:focus {
    outline: none;
    border-color: var(--primary-blue);
    background-color: rgba(255, 255, 255, 0.1);
}

.product-card {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.5s forwards;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.product-card img {
    transition: transform 0.3s ease;
}

.product-card:hover img {
    transform: scale(1.05);
}

#ecommerce .grid > .product-card:nth-child(1) { animation-delay: 0.1s; }
#ecommerce .grid > .product-card:nth-child(2) { animation-delay: 0.2s; }
#ecommerce .grid > .product-card:nth-child(3) { animation-delay: 0.3s; }
#ecommerce .grid > .product-card:nth-child(4) { animation-delay: 0.4s; }
#ecommerce .grid > .product-card:nth-child(5) { animation-delay: 0.5s; }
#ecommerce .grid > .product-card:nth-child(6) { animation-delay: 0.6s; }