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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
}

::selection {
    background-color: rgba(212, 159, 48, 0.2);
    color: #f4f6fb;
}

::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: #0d1a2e;
}

::-webkit-scrollbar-thumb {
    background: #1c365a;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #254473;
}

/* Page Loader */
#page-loader {
    z-index: 50;
}

#page-loader.fade-out {
    opacity: 0;
    pointer-events: none;
}

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

#mobile-menu .mobile-link {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.3s ease, transform 0.3s ease, color 0.3s ease;
}

#mobile-menu.open .mobile-link {
    opacity: 1;
    transform: translateY(0);
}

#mobile-menu.open .mobile-link:nth-child(1) { transition-delay: 0.08s; }
#mobile-menu.open .mobile-link:nth-child(2) { transition-delay: 0.14s; }
#mobile-menu.open .mobile-link:nth-child(3) { transition-delay: 0.20s; }
#mobile-menu.open .mobile-link:nth-child(4) { transition-delay: 0.26s; }
#mobile-menu.open .mobile-link:nth-child(5) { transition-delay: 0.32s; }

/* Header scroll state */
#site-header.scrolled {
    background-color: rgba(13, 26, 46, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

#site-header.scrolled .border-b {
    border-color: rgba(28, 54, 90, 0.6);
}

/* Mobile menu button animation */
#menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(2px, 2px);
}

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

#menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(2px, -2px);
    width: 1.4rem;
}

/* Scroll reveal base — progressive enhancement via JS */
.reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
    }
    
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
    
    .reveal-delay-1 { transition-delay: 0.1s; }
    .reveal-delay-2 { transition-delay: 0.2s; }
    .reveal-delay-3 { transition-delay: 0.3s; }
    .reveal-delay-4 { transition-delay: 0.4s; }
}

/* Form date input styling */
input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(0.6) sepia(1) saturate(3) hue-rotate(10deg);
    cursor: pointer;
}

/* Image loading placeholder */
img {
    background-color: #1c365a;
}

/* Focus visible for accessibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 1px solid rgba(212, 159, 48, 0.5);
    outline-offset: 2px;
}