/* === Base === */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; overflow-x: hidden; }

/* === Buttons === */
.btn-gold {
    background: linear-gradient(135deg, #F5C547 0%, #D4A017 50%, #B8860B 100%);
    color: #0A1628;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}
.btn-gold:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(212, 160, 23, 0.35);
}

.btn-navy {
    background: #0A1628;
    color: #FDF8E8;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}
.btn-navy:hover {
    background: #1a2d45;
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(10, 22, 40, 0.3);
}

.btn-outline {
    background: transparent;
    color: #F0F4F8;
    border: 2px solid rgba(240, 244, 248, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}
.btn-outline:hover {
    border-color: #F5C547;
    color: #F5C547;
}

/* === Inputs === */
.input-field {
    border: 1.5px solid #D9E2EC;
    border-radius: 12px;
    padding: 0.75rem 1rem;
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.9375rem;
    color: #0A1628;
    background: #FDF8E8;
    transition: all 0.2s ease;
    outline: none;
    width: 100%;
}
.input-field::placeholder { color: #9FB3C8; }
.input-field:focus {
    border-color: #D4A017;
    box-shadow: 0 0 0 3px rgba(212, 160, 23, 0.15);
    background: #ffffff;
}

/* === Cards === */
.card-hover {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.card-hover:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 60px rgba(10, 22, 40, 0.12);
}

/* === Nav === */
.nav-link {
    position: relative;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: #D4A017;
    transition: width 0.3s ease;
    border-radius: 1px;
}
.nav-link:hover::after { width: 100%; }

/* === Navbar states === */
#navbar.scrolled {
    background: rgba(253, 248, 232, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 30px rgba(10, 22, 40, 0.08);
}
#navbar.scrolled .nav-link { color: #3E4C5E; }
#navbar.scrolled .btn-gold { color: #0A1628; }

/* === 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;
    padding: 0.5rem 0;
    border-bottom: 1px solid #D9E2EC;
}
.mobile-link:last-child { border-bottom: none; }

/* === Float animation === */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}
.animate-float {
    animation: float 3s ease-in-out infinite;
}

/* === Scroll reveal (progressive enhancement) === */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
    }
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* === Custom scrollbar === */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #F0F4F8; }
::-webkit-scrollbar-thumb { background: #BBCADB; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #9FB3C8; }

/* === Selection === */
::selection { background: rgba(212, 160, 23, 0.2); color: #0A1628; }