/* ============================================
   CENTRAL SAND COMPANY — Custom Styles
   ============================================ */

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

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

body {
    overflow-x: hidden;
}

/* Selection Color */
::selection {
    background-color: rgba(240, 72, 56, 0.2);
    color: #18181b;
}

/* ============================================
   NAVIGATION
   ============================================ */

#navbar {
    backdrop-filter: blur(0px);
    -webkit-backdrop-filter: blur(0px);
}

#navbar.scrolled {
    background-color: rgba(5, 5, 6, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}

#navbar.scrolled .nav-logo-text {
    color: #fff;
}

/* ============================================
   HERO
   ============================================ */

.hero-img {
    transition: transform 8s ease-out;
}

.hero-img.loaded {
    transform: scale(1);
}

.hero-content {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 1s ease-out, transform 1s ease-out;
}

/* ============================================
   SERVICE CARDS
   ============================================ */

.service-card {
    transition: background-color 0.4s ease;
}

.service-card:hover {
    background-color: #fafafa;
}

.service-card:hover .w-12 {
    border-color: #f04838;
}

.service-card:hover svg {
    color: #f04838;
}

/* ============================================
   MATERIAL CARDS
   ============================================ */

.material-card {
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.material-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
}

/* ============================================
   SELECT STYLING
   ============================================ */

select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12' fill='none'%3E%3Cpath d='M3 4.5l3 3 3-3' stroke='%2371717a' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0 center;
    padding-right: 2rem;
}

/* ============================================
   MOBILE MENU
   ============================================ */

.mobile-link {
    opacity: 0;
    transform: translateY(20px);
}

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

.mobile-menu-open .mobile-link:nth-child(1) { transition: opacity 0.4s ease 0.1s, transform 0.4s ease 0.1s; }
.mobile-menu-open .mobile-link:nth-child(2) { transition: opacity 0.4s ease 0.15s, transform 0.4s ease 0.15s; }
.mobile-menu-open .mobile-link:nth-child(3) { transition: opacity 0.4s ease 0.2s, transform 0.4s ease 0.2s; }
.mobile-menu-open .mobile-link:nth-child(4) { transition: opacity 0.4s ease 0.25s, transform 0.4s ease 0.25s; }

/* ============================================
   SCROLL REVEAL (progressive enhancement)
   ============================================ */

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.8s ease-out, transform 0.8s ease-out;
    }

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

    .reveal-delay-1 { transition-delay: 0.1s; }
    .reveal-delay-2 { transition-delay: 0.2s; }
    .reveal-delay-3 { transition-delay: 0.3s; }
    .reveal-delay-4 { transition-delay: 0.4s; }
}

/* Always visible regardless of JS */
@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
    }
}

/* ============================================
   FORM FOCUS STATES
   ============================================ */

input:focus,
textarea:focus,
select:focus {
    border-bottom-color: #f04838 !important;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
    .font-serif {
        line-height: 1.1;
    }
}