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

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

body {
    margin: 0;
    overflow-x: hidden;
}

::selection {
    background: rgba(200, 164, 90, 0.3);
    color: #F5F0FF;
}

/* ─── NAVBAR ─── */
#navbar {
    background: transparent;
    transition: background 0.5s ease, box-shadow 0.5s ease, backdrop-filter 0.5s ease;
}

#navbar.scrolled {
    background: rgba(6, 3, 12, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(200, 164, 90, 0.1);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: #FBBF24;
    transition: width 0.3s ease;
}

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

/* ─── MOBILE MENU ─── */
#mobile-menu.open {
    opacity: 1;
    pointer-events: all;
}

.menu-line {
    transition: transform 0.3s ease, opacity 0.3s ease, width 0.3s ease;
}

#menu-toggle.active .menu-line:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
}

#menu-toggle.active .menu-line:nth-child(2) {
    opacity: 0;
}

#menu-toggle.active .menu-line:nth-child(3) {
    width: 1.5rem;
    transform: translateY(-4px) rotate(-45deg);
}

.mobile-nav-link {
    font-size: 1.125rem;
}

/* ─── HERO ─── */
#hero {
    position: relative;
}

#hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: 80px;
    background: linear-gradient(to bottom, transparent, rgba(200, 164, 90, 0.5));
    z-index: 10;
}

/* ─── MENU TABS ─── */
.menu-tab {
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.menu-tab.active-tab {
    background: rgba(200, 164, 90, 0.15);
    color: #FBBF24;
    border: 1px solid rgba(200, 164, 90, 0.3);
}

.menu-tab:not(.active-tab):hover {
    color: #FBBF24;
}

/* ─── SCROLL REVEAL ─── */
.reveal-up,
.reveal-left,
.reveal-right {
    opacity: 1;
    transform: none;
    transition: opacity 0.8s ease, transform 0.8s ease;
}

@media (prefers-reduced-motion: no-preference) {
    .reveal-up {
        opacity: 0;
        transform: translateY(30px);
    }

    .reveal-left {
        opacity: 0;
        transform: translateX(-30px);
    }

    .reveal-right {
        opacity: 0;
        transform: translateX(30px);
    }

    .reveal-up.revealed,
    .reveal-left.revealed,
    .reveal-right.revealed {
        opacity: 1;
        transform: none;
    }
}

/* ─── FORM ─── */
select option {
    background: #1A0A2E;
    color: #EDE5FF;
}

/* ─── UTILITY ─── */
@media (max-width: 640px) {
    h1 {
        font-size: 3rem;
    }
}