/* ===== 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;
}

/* ===== Floating Animations ===== */
@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-12px) rotate(1deg); }
}

@keyframes float-delayed {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-8px) rotate(-1deg); }
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

.animate-float-delayed {
    animation: float-delayed 7s ease-in-out infinite;
    animation-delay: 1.5s;
}

/* ===== Scroll Reveal ===== */
.reveal {
    opacity: 1;
    transform: translateY(0);
    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);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    html {
        scroll-behavior: auto;
    }
    .reveal {
        opacity: 1;
        transform: none;
    }
}

/* ===== Navbar Scroll State ===== */
.nav-scrolled {
    background: rgba(255, 255, 255, 0.92) !important;
    backdrop-filter: blur(20px) !important;
    -webkit-backdrop-filter: blur(20px) !important;
    box-shadow: 0 1px 40px rgba(15, 23, 42, 0.08) !important;
}

/* ===== 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);
    }
}

/* ===== Custom Selection ===== */
::selection {
    background: #86efac;
    color: #0F172A;
}

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

::-webkit-scrollbar-track {
    background: #f0fdf4;
}

::-webkit-scrollbar-thumb {
    background: #86efac;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #4ade80;
}

/* ===== Focus Styles ===== */
a:focus-visible, button:focus-visible {
    outline: 2px solid #86efac;
    outline-offset: 2px;
    border-radius: 4px;
}

/* ===== Utility ===== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}