/* ===== Base & Reset ===== */
*, *::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: rgba(45, 212, 191, 0.3);
    color: #f0fdf9;
}

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

::-webkit-scrollbar-track {
    background: #0a1628;
}

::-webkit-scrollbar-thumb {
    background: #1a3a6b;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #2dd4bf;
}

/* ===== Navbar ===== */
#navbar {
    transition: background 0.4s ease, backdrop-filter 0.4s ease, box-shadow 0.4s ease;
}

#navbar.scrolled {
    background: rgba(3, 7, 20, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(255,255,255,0.05);
}

/* ===== Hero ===== */
#hero {
    position: relative;
}

#hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(to top, #0a1628, transparent);
    pointer-events: none;
}

/* ===== Floating Cards Animation ===== */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.floating-card-1 { animation: float 6s ease-in-out infinite; }
.floating-card-2 { animation: float 7s ease-in-out infinite 0.5s; }
.floating-card-3 { animation: float 5.5s ease-in-out infinite 1s; }
.floating-card-4 { animation: float 6.5s ease-in-out infinite 0.3s; }

/* ===== Section Dividers ===== */
section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(45, 212, 191, 0.3), transparent);
}

/* ===== Menu Cards ===== */
.group:hover .group-hover\:scale-105 {
    transition: transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ===== Scroll Reveal (progressive enhancement) ===== */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        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);
    }

    .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; }
}

/* ===== Mobile Menu ===== */
#mobile-menu {
    animation: slideDown 0.3s ease;
}

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

/* ===== Focus Styles ===== */
a:focus-visible, button:focus-visible {
    outline: 2px solid #2dd4bf;
    outline-offset: 2px;
    border-radius: 4px;
}

/* ===== Image Placeholder ===== */
img {
    max-width: 100%;
    height: auto;
}

/* ===== Print ===== */
@media print {
    nav, #mobile-menu-btn, footer iframe {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
}