/* Custom styles — overrides and additions to Tailwind */

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Navbar transition states */
.navbar-scrolled {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
}

.navbar-scrolled .nav-text {
    color: #1e293b !important;
}

.navbar-scrolled .nav-link {
    color: #475569 !important;
}

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

/* Float animations for hero blobs */
@keyframes float {
    0%, 100% { transform: translateY(0px) scale(1); }
    50% { transform: translateY(-20px) scale(1.05); }
}

@keyframes float-delay {
    0%, 100% { transform: translateY(0px) scale(1); }
    50% { transform: translateY(25px) scale(1.03); }
}

@keyframes float-slow {
    0%, 100% { transform: translateY(0px) translateX(0px); }
    50% { transform: translateY(-15px) translateX(10px); }
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

.animate-float-delay {
    animation: float-delay 8s ease-in-out infinite;
}

.animate-float-slow {
    animation: float-slow 10s ease-in-out infinite;
}

/* Scroll reveal — progressive enhancement with prefers-reduced-motion */
@media (prefers-reduced-motion: no-preference) {
    .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);
    }

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

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

/* Mobile menu transitions */
#mobile-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

#mobile-menu.open {
    max-height: 400px;
}

/* Input focus styles */
input:focus, select:focus, textarea:focus {
    box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.15);
}

/* Button ripple-like effect on hover */
button[type="submit"]:hover {
    transform: translateY(-1px);
}

button[type="submit"]:active {
    transform: translateY(0);
}

/* Selection color */
::selection {
    background: rgba(20, 184, 166, 0.2);
    color: #1e293b;
}

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

::-webkit-scrollbar-track {
    background: #f8fafc;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Ensure above-the-fold content is visible without JS */
#hero, #services, #about, #patient-info, #contact, footer {
    opacity: 1 !important;
    visibility: visible !important;
}