/* ============================================
   LIGHTHOUSE NUTRITION — Custom Styles
   ============================================ */

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

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

body {
    overflow-x: hidden;
}

/* Selection */
::selection {
    background: rgba(212, 168, 67, 0.3);
    color: #FDFCF7;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #0A1410;
}
::-webkit-scrollbar-thumb {
    background: #1A3D2D;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #2D5A42;
}

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

#navbar.scrolled {
    background: rgba(5, 13, 10, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(212, 168, 67, 0.1);
}

/* Mobile menu */
#mobile-menu.active {
    opacity: 1;
    pointer-events: all;
}

.mobile-link {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease, color 0.3s ease;
}

#mobile-menu.active .mobile-link {
    opacity: 1;
    transform: translateY(0);
}

#mobile-menu.active .mobile-link:nth-child(1) { transition-delay: 0.05s; }
#mobile-menu.active .mobile-link:nth-child(2) { transition-delay: 0.1s; }
#mobile-menu.active .mobile-link:nth-child(3) { transition-delay: 0.15s; }
#mobile-menu.active .mobile-link:nth-child(4) { transition-delay: 0.2s; }
#mobile-menu.active .mobile-link:nth-child(5) { transition-delay: 0.25s; }

/* Menu button animation */
.menu-line {
    transition: transform 0.3s ease, opacity 0.3s ease;
}

#menu-btn.active .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(3px, 3px);
}
#menu-btn.active .menu-line:nth-child(2) {
    opacity: 0;
}
#menu-btn.active .menu-line:nth-child(3) {
    transform: rotate(-45deg) translate(3px, -3px);
    width: 1.5rem;
}

/* ============================================
   REVEAL ANIMATIONS (progressive enhancement)
   ============================================ */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.8s ease, transform 0.8s ease;
    }

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

    .reveal:nth-child(2) { transition-delay: 0.1s; }
    .reveal:nth-child(3) { transition-delay: 0.2s; }
}

/* ============================================
   GOLD SHIMMER ACCENT
   ============================================ */
@keyframes shimmer {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}

.gold-shimmer {
    background: linear-gradient(
        90deg,
        #D4A843 0%,
        #F0D68A 25%,
        #D4A843 50%,
        #F0D68A 75%,
        #D4A843 100%
    );
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shimmer 4s linear infinite;
}

/* ============================================
   BUTTON HOVER GLOW
   ============================================ */
button:hover,
a:hover {
    /* handled by individual component styles */
}

/* ============================================
   IMAGE PLACEHOLDER FALLBACK
   ============================================ */
img {
    max-width: 100%;
    height: auto;
}

/* ============================================
   RESPONSIVE TWEAKS
   ============================================ */
@media (max-width: 640px) {
    html {
        scroll-padding-top: 70px;
    }
}