/* ============================================
   STEAK 'N SHAKE ST. LOUIS — CUSTOM STYLES
   ============================================ */

/* Base & smooth scrolling */
html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
}

/* Selection color */
::selection {
    background-color: #7B2D3B;
    color: #FDF8F4;
}

/* ============================================
   NAVBAR
   ============================================ */
#navbar {
    transition: background-color 0.4s ease, box-shadow 0.4s ease, padding 0.4s ease;
}

#navbar.scrolled {
    background-color: rgba(58, 15, 22, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

#navbar.scrolled .menu-line {
    background-color: #FDF8F4;
}

/* ============================================
   MOBILE MENU
   ============================================ */
.mobile-link {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

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

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

/* Menu button active state */
#menu-btn.active .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}
#menu-btn.active .menu-line:nth-child(2) {
    opacity: 0;
}
#menu-btn.active .menu-line:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
    width: 1.5rem;
}

/* ============================================
   SCROLL REVEAL (progressive enhancement)
   ============================================ */
@media (prefers-reduced-motion: no-preference) {
    .scroll-reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    }

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

    /* Stagger children */
    .scroll-reveal:nth-child(2) { transition-delay: 0.1s; }
    .scroll-reveal:nth-child(3) { transition-delay: 0.2s; }
    .scroll-reveal:nth-child(4) { transition-delay: 0.3s; }
    .scroll-reveal:nth-child(5) { transition-delay: 0.4s; }
    .scroll-reveal:nth-child(6) { transition-delay: 0.5s; }
}

/* ============================================
   BUTTON HOVER EFFECTS
   ============================================ */
a {
    text-decoration: none;
}

/* ============================================
   IMAGE LOADING
   ============================================ */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ============================================
   FOCUS STYLES
   ============================================ */
a:focus-visible,
button:focus-visible {
    outline: 2px solid #F19F78;
    outline-offset: 4px;
    border-radius: 4px;
}

/* ============================================
   RESPONSIVE TWEAKS
   ============================================ */
@media (max-width: 640px) {
    .font-serif {
        line-height: 1.1;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    #navbar,
    #mobile-menu,
    .scroll-reveal {
        display: none !important;
    }

    body {
        color: #1C1417;
        background: white;
    }

    a[href^="tel:"]::after,
    a[href^="#"]::after {
        content: none;
    }
}