/* ============================================
   Advanced TRT Clinic — Custom Styles
   ============================================ */

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

body {
    font-family: 'Inter', system-ui, sans-serif;
}

.font-serif {
    font-family: 'Lora', Georgia, serif;
}

::selection {
    background-color: rgba(15, 118, 110, 0.2);
    color: #0f766e;
}

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

#navbar.scrolled {
    background-color: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
}

#navbar.scrolled .font-serif {
    color: #0f172a;
}

#navbar.scrolled .text-slate-500,
#navbar.scrolled .text-slate-600 {
    color: #475569;
}

#navbar.scrolled .mobile-link {
    color: #334155;
}

/* --- Hero Floating Cards --- */
@keyframes float-1 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

@keyframes float-2 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-14px); }
}

@keyframes float-3 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

@keyframes float-4 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

.card-float-1 { animation: float-1 5s ease-in-out infinite; }
.card-float-2 { animation: float-2 6s ease-in-out infinite 0.5s; }
.card-float-3 { animation: float-3 4.5s ease-in-out infinite 1s; }
.card-float-4 { animation: float-4 5.5s ease-in-out infinite 0.3s; }

/* --- Service Cards --- */
.service-card {
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                box-shadow 0.4s ease,
                border-color 0.4s ease;
}

.service-card:hover {
    transform: translateY(-4px);
}

/* --- Process Steps --- */
.process-step {
    transition: transform 0.3s ease;
}

.process-step:hover {
    transform: translateY(-2px);
}

/* --- FAQ --- */
.faq-btn {
    transition: background-color 0.2s ease;
}

.faq-btn:hover {
    background-color: rgba(0, 0, 0, 0.02);
}

.faq-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                padding 0.4s ease;
}

.faq-content.open {
    max-height: 300px;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

/* --- Scroll Reveal (progressive enhancement) --- */
@media (prefers-reduced-motion: no-preference) {
    .reveal-inline {
        opacity: 0;
        transform: translateY(20px);
        transition: opacity 0.6s ease, transform 0.6s ease;
    }

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

/* Fallback: always visible if JS doesn't load */
.reveal-inline {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: no-preference) {
    .reveal-inline {
        opacity: 0;
        transform: translateY(20px);
    }
    .reveal-inline.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Back to Top --- */
#backToTop {
    transition: opacity 0.3s ease, transform 0.3s ease, background-color 0.3s ease;
}

#backToTop.visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

#backToTop:not(.visible) {
    opacity: 0;
    pointer-events: none;
    transform: translateY(16px);
}

/* --- Mobile Menu --- */
#mobileMenu {
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Smooth Focus Styles --- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid #0f766e;
    outline-offset: 2px;
}

/* --- Print Styles --- */
@media print {
    nav, #backToTop, button { display: none; }
    body { color: #000; background: #fff; }
}