/* ===== Reset & Base ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* ===== Scroll Reveal (Progressive Enhancement) ===== */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

    .reveal:nth-child(2) { transition-delay: 0.1s; }
    .reveal:nth-child(3) { transition-delay: 0.2s; }
    .reveal:nth-child(4) { transition-delay: 0.3s; }
}

/* ===== Navbar Scroll State ===== */
#navbar.scrolled {
    background: rgba(9, 18, 33, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05), 0 4px 20px rgba(0, 0, 0, 0.3);
}

#navbar.scrolled .font-display {
    color: #ffffff;
}

/* ===== Mobile Menu ===== */
#mobile-menu {
    animation: slideDown 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.mobile-link {
    position: relative;
}

.mobile-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: #3aad78;
    transition: width 0.3s ease;
}

.mobile-link:hover::after {
    width: 100%;
}

/* ===== Custom Scrollbar ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #0f1d33;
}

::-webkit-scrollbar-thumb {
    background: #2e4d7d;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #3aad78;
}

/* ===== Selection Color ===== */
::selection {
    background: rgba(58, 95, 150, 0.4);
    color: #ffffff;
}

/* ===== Focus Styles ===== */
a:focus-visible,
button:focus-visible {
    outline: 2px solid #3aad78;
    outline-offset: 2px;
    border-radius: 4px;
}

/* ===== Image Placeholder Fallback ===== */
img {
    background: linear-gradient(135deg, #1a2d4c 0%, #0f1d33 100%);
}

/* ===== Utility ===== */
.container {
    max-width: 7rem;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

@media (min-width: 768px) {
    .container {
        max-width: 56rem;
    }
}

@media (min-width: 1024px) {
    .container {
        max-width: 80rem;
    }
}