/* ========================================
   SmileBar Dental — Custom Styles
   ======================================== */

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

body {
    overflow-x: hidden;
}

::selection {
    background: rgba(212, 168, 75, 0.3);
    color: #fff;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #0A1628;
}
::-webkit-scrollbar-thumb {
    background: #1a2846;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #D4A84B;
}

/* Navbar Scroll State */
#navbar {
    transition: background-color 0.4s ease, box-shadow 0.4s ease, padding 0.4s ease;
}

#navbar.scrolled {
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

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

#mobile-menu .mobile-link {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
}

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

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

/* Mobile Menu Button Animation */
.menu-line {
    transition: transform 0.3s ease, opacity 0.3s ease;
}

#mobile-menu-btn.active .menu-line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}
#mobile-menu-btn.active .menu-line:nth-child(2) {
    opacity: 0;
}
#mobile-menu-btn.active .menu-line:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
    width: 1.25rem;
}

/* Service Cards */
.service-card {
    transition: transform 0.5s cubic-bezier(0.23, 1, 0.32, 1), box-shadow 0.5s ease;
}

.service-card:hover {
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(212, 168, 75, 0.1);
}

/* Scroll Reveal Animations */
/* Default state: visible (progressive enhancement) */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s cubic-bezier(0.23, 1, 0.32, 1), transform 0.8s cubic-bezier(0.23, 1, 0.32, 1);
}

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

/* JS-enhanced: hide initially, reveal on scroll */
.js-active .reveal {
    opacity: 0;
    transform: translateY(40px);
}

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

.js-active .reveal-delay-1 { transition-delay: 0.1s; }
.js-active .reveal-delay-2 { transition-delay: 0.2s; }
.js-active .reveal-delay-3 { transition-delay: 0.3s; }
.js-active .reveal-delay-4 { transition-delay: 0.4s; }
.js-active .reveal-delay-5 { transition-delay: 0.5s; }
.js-active .reveal-delay-6 { transition-delay: 0.6s; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    .reveal,
    .js-active .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .service-card {
        transition: none;
    }
    .service-card:hover {
        transform: none;
    }
}

/* Floating card animations */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

@keyframes float-slow {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-8px) rotate(1deg); }
}

.hero-float-1 {
    animation: float 6s ease-in-out infinite;
}
.hero-float-2 {
    animation: float-slow 8s ease-in-out infinite;
}
.hero-float-3 {
    animation: float 7s ease-in-out infinite 1s;
}
.hero-float-4 {
    animation: float-slow 9s ease-in-out infinite 0.5s;
}

/* Gold shimmer effect on hover */
@keyframes shimmer {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}

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

@media (min-width: 768px) and (max-width: 1023px) {
    .service-card {
        padding: 2rem;
    }
}