/* ============================================
   DR. BILLINGS — EDITORIAL MEDICAL WEBSITE
   Deep Navy + Warm Gold Palette
   ============================================ */

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

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

body {
    margin: 0;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}

/* --- Navbar Transitions --- */
#navbar {
    background: transparent;
}

#navbar.scrolled {
    background: rgba(15, 26, 40, 0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(212, 144, 10, 0.15);
}

#navbar.scrolled .nav-logo-text,
#navbar.scrolled .nav-logo-sub,
#navbar.scrolled .nav-link,
#navbar.scrolled .nav-border {
    color: #ffffff !important;
}

#navbar.scrolled .nav-border {
    border-color: rgba(255, 255, 255, 0.3) !important;
}

/* --- Service Card Stagger Animation --- */
.service-card {
    opacity: 1;
    transform: translateY(0);
}

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

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

/* --- Scroll Reveal (progressive enhancement) --- */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                    transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    .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; }
}

/* --- Focus Styles for Accessibility --- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid #d4900a;
    outline-offset: 2px;
}

/* --- Selection Color --- */
::selection {
    background: rgba(212, 144, 10, 0.25);
    color: #0f1a28;
}

/* --- Custom Scrollbar --- */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #0f1a28;
}

::-webkit-scrollbar-thumb {
    background: #d4900a;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #e9a820;
}

/* --- Responsive adjustments --- */
@media (max-width: 767px) {
    .service-card {
        padding: 2rem !important;
    }
}