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

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

body {
    margin: 0;
    overflow-x: hidden;
}

/* Hero text reveal animation — only runs with JS */
@media (prefers-reduced-motion: no-preference) {
    .reveal-hero {
        opacity: 0;
        transform: translateY(24px);
        animation: heroReveal 0.7s cubic-bezier(0.22, 1, 0.36, 1) forwards;
    }
    .reveal-hero:nth-child(1) { animation-delay: 0.1s; }
    .reveal-hero:nth-child(2) { animation-delay: 0.25s; }
    .reveal-hero:nth-child(3) { animation-delay: 0.4s; }
    .reveal-hero:nth-child(4) { animation-delay: 0.55s; }
    .reveal-hero:nth-child(5) { animation-delay: 0.7s; }

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

/* Scroll reveal — progressive enhancement, hidden by default */
.reveal {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(32px);
        transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1), transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
    }
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Header states */
.header-scrolled #main-header {
    background: rgba(15, 23, 42, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 0 rgba(255,255,255,0.06), 0 4px 24px rgba(0,0,0,0.2);
}

.header-scrolled .header-text,
.header-scrolled .header-link {
    color: rgba(255, 255, 255, 0.9);
}

/* Mobile menu */
.mobile-menu {
    animation: slideIn 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.mobile-menu.hidden {
    animation: slideOut 0.25s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

@keyframes slideOut {
    from { transform: translateX(0); }
    to { transform: translateX(-100%); opacity: 0; }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #f8f9fc;
}
::-webkit-scrollbar-thumb {
    background: #c7cde3;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #96a0cc;
}

/* Selection */
::selection {
    background: rgba(212, 168, 83, 0.25);
    color: #0f172a;
}