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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background: #D4A843;
    color: #0F1C3F;
}

/* ========== NAVBAR ========== */
#navbar {
    background: transparent;
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

#navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-blur-xl;
    box-shadow: 0 1px 20px rgba(15, 28, 63, 0.08);
}

.nav-link {
    position: relative;
}

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

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

.mobile-link {
    display: block;
}

/* ========== HERO CARDS ========== */
.card-float-1 {
    animation: float1 6s ease-in-out infinite;
}

.card-float-2 {
    animation: float2 5s ease-in-out infinite;
}

.card-float-3 {
    animation: float3 7s ease-in-out infinite;
}

.card-float-4 {
    animation: float4 5.5s ease-in-out infinite;
}

@keyframes float1 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

@keyframes float2 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

@keyframes float3 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

@keyframes float4 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-6px); }
}

/* ========== REVEAL ANIMATIONS ========== */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }

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

/* ========== MENU TABS ========== */
.menu-tab {
    background: transparent;
    color: #405070;
    border: none;
    cursor: pointer;
    font-family: 'Inter', system-ui, sans-serif;
}

.menu-tab.active {
    background: #0F1C3F;
    color: #D4A843;
    box-shadow: 0 4px 12px rgba(15, 28, 63, 0.3);
}

.menu-tab:not(.active):hover {
    background: rgba(15, 28, 63, 0.06);
    color: #0F1C3F;
}

/* ========== BUTTONS ========== */
a, button {
    -webkit-tap-highlight-color: transparent;
}

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

::-webkit-scrollbar-track {
    background: #FDF9EF;
}

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

::-webkit-scrollbar-thumb:hover {
    background: #9DB4CB;
}