/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}
::-webkit-scrollbar-track {
    background: #0f172a;
}
::-webkit-scrollbar-thumb {
    background: #334155;
    border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
    background: #14b8a6;
}

/* Preloader */
.preloader {
    position: fixed;
    inset: 0;
    background: #020617;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}
.preloader.loaded {
    opacity: 0;
    visibility: hidden;
}
.loader-line {
    width: 4px;
    height: 60px;
    background: linear-gradient(to bottom, #14b8a6, #d4af37);
    animation: spin 1s linear infinite;
    border-radius: 2px;
}
@keyframes spin {
    0% { transform: scaleY(0.5); opacity: 0.5; }
    50% { transform: scaleY(1); opacity: 1; }
    100% { transform: scaleY(0.5); opacity: 0.5; }
}

/* Typography Utilities */
.font-serif {
    font-family: 'Cinzel', serif;
}
.font-sans {
    font-family: 'Inter', sans-serif;
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: #d4af37;
    color: #020617;
    padding: 8px;
    z-index: 100;
    transition: top 0.3s;
}
.skip-link:focus {
    top: 0;
}

/* Scroll Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Header Transition */
header.scrolled {
    background: rgba(2, 6, 23, 0.95);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

/* Mobile Menu */
#mobile-menu {
    animation: slideDown 0.3s ease-out;
}
@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Service Card Hover */
.service-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(20, 184, 166, 0.1);
}

/* Gold Gradient Text */
.text-gradient-gold {
    background: linear-gradient(to right, #d4af37, #f3cf55);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}