/* ===== BASE & RESET ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
img { max-width: 100%; height: auto; display: block; }

/* ===== SCROLL REVEAL (progressive enhancement) ===== */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1), transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
    }
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
    /* Stagger children */
    .reveal-stagger > * {
        opacity: 0;
        transform: translateY(16px);
        transition: opacity 0.5s cubic-bezier(0.22, 1, 0.36, 1), transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
    }
    .reveal-stagger.revealed > *:nth-child(1) { transition-delay: 0s; }
    .reveal-stagger.revealed > *:nth-child(2) { transition-delay: 0.08s; }
    .reveal-stagger.revealed > *:nth-child(3) { transition-delay: 0.16s; }
    .reveal-stagger.revealed > *:nth-child(4) { transition-delay: 0.24s; }
    .reveal-stagger.revealed > *:nth-child(5) { transition-delay: 0.32s; }
    .reveal-stagger.revealed > *:nth-child(6) { transition-delay: 0.40s; }
}

/* Default visible state (no-JS graceful fallback) */
.reveal { opacity: 1; transform: none; }
.reveal-stagger > * { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
    .reveal, .reveal-stagger > * { opacity: 1; transform: none; transition: none; }
}

/* ===== NAV LINKS ===== */
.nav-link { position: relative; }
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: #0d9488;
    transform: translateX(-50%);
    transition: width 0.2s ease;
}
.nav-link:hover::after { width: 60%; }

/* ===== MOBILE MENU ===== */
#mobileMenu { animation: slideDown 0.25s ease; }
@keyframes slideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== FLOATING CARDS ANIMATION ===== */
@media (prefers-reduced-motion: no-preference) {
    .floating-card-1 { animation: float1 6s ease-in-out infinite; }
    .floating-card-2 { animation: float2 7s ease-in-out infinite; }
    .floating-card-3 { animation: float3 5.5s ease-in-out infinite; }
    .floating-card-4 { animation: float4 6.5s ease-in-out infinite; }
}

@keyframes float1 {
    0%, 100% { transform: translateY(0) rotate(-1deg); }
    50% { transform: translateY(-8px) rotate(0deg); }
}
@keyframes float2 {
    0%, 100% { transform: translateY(0) rotate(1deg); }
    50% { transform: translateY(-6px) rotate(0deg); }
}
@keyframes float3 {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(1deg); }
}
@keyframes float4 {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-5px) rotate(-1deg); }
}

/* ===== BUTTON HOVER EFFECTS ===== */
a[href^="tel"] { text-decoration: none; }

/* ===== FOCUS STYLES ===== */
:focus-visible {
    outline: 2px solid #0d9488;
    outline-offset: 2px;
    border-radius: 4px;
}

/* ===== CUSTOM SCROLLBAR ===== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #f1f5f9; }
::-webkit-scrollbar-thumb { background: #94a3b8; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #64748b; }