.gradient-bg {
    background: linear-gradient(
        135deg,
        var(--gradient-start),
        var(--gradient-end)
    );
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 1rem;
}

.hero-gradient {
    background: linear-gradient(
        135deg,
        var(--gradient-start) 0%,
        var(--gradient-end) 100%
    );
    position: relative;
    overflow: hidden;
}

.hero-gradient::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.feature-card {
    background: var(--card);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        var(--glass-bg),
        transparent
    );
    transition: left 0.5s ease;
}

.feature-card:hover::before {
    left: 100%;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px var(--shadow-color);
    border-color: var(--primary);
}

.info-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
}

.sticky-sidebar {
    position: sticky;
    top: 2rem;
}

@keyframes float {
    0%,
    100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

.float-animation {
    animation: float 6s ease-in-out infinite;
}

@keyframes pulse-ring {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    100% {
        transform: scale(1.5);
        opacity: 0;
    }
}

.pulse-ring {
    animation: pulse-ring 2s infinite;
}

.tab-button {
    padding: 1rem 2rem;
    border-radius: 0.75rem;
    font-weight: 600;
    transition: all 0.3s ease;
    background: var(--card);
    border: 1px solid var(--border-color);
    color: var(--desc);
}

.tab-button.active {
    background: linear-gradient(
        135deg,
        var(--gradient-start),
        var(--gradient-end)
    );
    color: white;
    border-color: transparent;
    box-shadow: 0 10px 30px var(--shadow-color);
}

.tab-content {
    display: none;
    animation: fadeIn 0.5s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.requirement-item {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 1rem;
}

.requirement-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5rem;
    width: 1rem;
    height: 1rem;
    border-radius: 50%;
    background: linear-gradient(
        135deg,
        var(--gradient-start),
        var(--gradient-end)
    );
}

.timeline-item {
    position: relative;
    padding-left: 3rem;
    margin-bottom: 2rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 0.75rem;
    top: 0;
    bottom: -2rem;
    width: 2px;
    background: linear-gradient(180deg, var(--primary), transparent);
}

.timeline-item:last-child::before {
    display: none;
}

.timeline-dot {
    position: absolute;
    left: 0;
    top: 0.25rem;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: linear-gradient(
        135deg,
        var(--gradient-start),
        var(--gradient-end)
    );
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 0.875rem;
    box-shadow: 0 4px 10px var(--shadow-color);
}

.price-tag {
    background: linear-gradient(
        135deg,
        var(--gradient-start),
        var(--gradient-end)
    );
    color: white;
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: 0 10px 30px var(--shadow-color);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--desc);
    transition: color 0.3s ease;
}

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

.image-gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.gallery-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: 1rem;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.gallery-item:hover {
    transform: scale(1.05);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

@media (max-width: 768px) {
    .image-gallery {
        grid-template-columns: repeat(2, 1fr);
    }
}