/* ============================================
   Nutrition Station — Custom Styles
   ============================================ */

/* Base & Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    overflow-x: hidden;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: #f5f5f0;
}
::-webkit-scrollbar-thumb {
    background: #d1d5db;
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: #9ca3af;
}

/* Selection */
::selection {
    background: #FF6B4A;
    color: #fff;
}

/* ============================================
   Navbar
   ============================================ */
#navbar {
    transition: background-color 0.5s ease, box-shadow 0.5s ease, padding 0.5s ease;
}

#navbar.scrolled {
    background-color: rgba(18, 18, 18, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: #FF6B4A;
    transition: width 0.3s ease;
}

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

/* ============================================
   Hero Animations
   ============================================ */
.hero-anim {
    opacity: 0;
    transform: translateY(30px);
    animation: heroReveal 1s ease forwards;
}

.hero-anim:nth-child(1) { animation-delay: 0.2s; }
.hero-anim:nth-child(2) { animation-delay: 0.4s; }
.hero-anim:nth-child(3) { animation-delay: 0.6s; }
.hero-anim:nth-child(4) { animation-delay: 0.8s; }

@keyframes heroReveal {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   Scroll Reveal
   ============================================ */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.reveal[data-reveal] {
    opacity: 0.4;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal[data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   Mobile Menu
   ============================================ */
#mobile-menu {
    opacity: 0;
    pointer-events: none;
}

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

/* ============================================
   Form Styles
   ============================================ */
input:focus,
select:focus,
textarea:focus {
    outline: none;
}

input::placeholder,
textarea::placeholder {
    color: #d1d5db;
}

select {
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239ca3af' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0 center;
    padding-right: 2rem;
}

/* ============================================
   Product Card Hover
   ============================================ */
.group:hover .group-hover\:scale-105 {
    transform: scale(1.05);
}

/* ============================================
   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[data-reveal] {
        opacity: 1;
        transform: none;
    }
}

/* ============================================
   Responsive Adjustments
   ============================================ */
@media (max-width: 767px) {
    .font-serif {
        line-height: 1.2;
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    #products .grid {
        gap: 2rem;
    }
}