*, *::before, *::after { box-sizing: border-box; }

html { font-size: 16px; }

body {
    overflow-x: hidden;
}

/* Preloader */
#preloader {
    transition: opacity 0.6s ease-out, visibility 0.6s ease-out;
}

#preloader.fade-out {
    opacity: 0;
    visibility: hidden;
}

/* Hero tag animation */
.hero-tag {
    opacity: 0;
    animation: fadeSlideUp 0.8s ease-out 0.5s forwards;
}

/* Scroll reveal base — content is visible by default */
.service-card {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out, border-color 0.5s ease;
}

/* Scroll reveal — applied via JS for below-fold sections */
.scroll-reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Mobile menu */
#mobile-menu.open {
    opacity: 1;
    pointer-events: all;
}

#mobile-menu.closed {
    opacity: 0;
    pointer-events: none;
}

/* Menu lines animation */
.menu-line {
    display: block;
}

#menu-toggle.active .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

#menu-toggle.active .menu-line:nth-child(2) {
    opacity: 0;
}

#menu-toggle.active .menu-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
    width: 1.5rem;
}

/* Mobile links */
.mobile-link {
    opacity: 1;
}

/* Header scroll state */
header.scrolled {
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(255,255,255,0.05);
}

header.scrolled .menu-line {
    background: white;
}

/* Gallery hover */
.gallery-item {
    cursor: pointer;
}

.gallery-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(10,22,40,0.3) 0%, transparent 50%);
    border-radius: 0.5rem;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.gallery-item:hover::after {
    opacity: 1;
}

/* Custom select dropdown */
select option {
    background: #0f2140;
    color: white;
}

/* Smooth scroll offset for fixed header */
section[id] {
    scroll-margin-top: 80px;
}

/* Selection color */
::selection {
    background: rgba(201, 168, 76, 0.3);
    color: white;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
}

/* Keyframes */
@keyframes fadeSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}