/* ==========================================
   Complete Dermatology Center — Styles
   Premium Dark Luxury | Emerald + Cream
   ========================================== */

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

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

body {
    background-color: #060D0A;
    color: #F5F0E8;
    font-family: 'Montserrat', system-ui, sans-serif;
    overflow-x: hidden;
}

::selection {
    background-color: rgba(201, 168, 76, 0.3);
    color: #F5F0E8;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #060D0A;
}
::-webkit-scrollbar-thumb {
    background: #1A3A2A;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #2D5A3D;
}

/* Navigation */
.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: linear-gradient(90deg, #C9A84C, #E5C76B);
    transition: width 0.3s ease;
}

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

.nav-link:hover {
    color: #C9A84C;
}

/* Navbar scroll state */
nav.scrolled {
    background: rgba(6, 13, 10, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(201, 168, 76, 0.1);
}

nav.scrolled .nav-link {
    color: rgba(245, 240, 232, 0.8);
}

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

#mobile-menu.closed {
    opacity: 0;
    pointer-events: none;
}

.mobile-nav-link {
    position: relative;
}

.mobile-nav-link:hover {
    color: #C9A84C;
}

/* Hamburger animation */
#hamburger.active #bar1 {
    transform: translateY(4px) rotate(45deg);
}
#hamburger.active #bar2 {
    opacity: 0;
    transform: scaleX(0);
}
#hamburger.active #bar3 {
    transform: translateY(-4px) rotate(-45deg);
    width: 1.5rem;
}

/* Hero */
#hero {
    position: relative;
}

/* Service Cards */
.service-card {
    position: relative;
    overflow: hidden;
    transition: transform 0.4s ease, border-color 0.5s ease, background 0.4s ease;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #C9A84C, transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.service-card:hover::before {
    opacity: 1;
}

.service-card:hover {
    transform: translateY(-4px);
    border-color: rgba(201, 168, 76, 0.4);
    background: rgba(6, 13, 10, 0.8);
}

/* Info Cards */
.info-card {
    transition: transform 0.4s ease, border-color 0.4s ease;
}

.info-card:hover {
    transform: translateY(-2px);
    border-color: rgba(201, 168, 76, 0.3);
}

/* Form Inputs */
input:focus,
select:focus,
textarea:focus {
    border-color: rgba(201, 168, 76, 0.6) !important;
    box-shadow: 0 0 0 3px rgba(201, 168, 76, 0.1);
}

/* Button hover glow */
button[type="submit"]:hover {
    box-shadow: 0 0 30px rgba(201, 168, 76, 0.2);
}

/* Scroll 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-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; }
    .reveal-delay-5 { transition-delay: 0.5s; }
    .reveal-delay-6 { transition-delay: 0.6s; }
}

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

/* Responsive adjustments */
@media (max-width: 767px) {
    .font-serif {
        line-height: 1.15;
    }
}

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