/* ===== BASE & RESET ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; -webkit-font-smoothing: antialiased; }

/* ===== NAVBAR ===== */
#navbar {
    background: transparent;
    transition: background 0.3s ease, box-shadow 0.3s ease, padding 0.3s ease;
}
#navbar.scrolled {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 20px rgba(0,0,0,0.08);
}
#navbar.scrolled .font-serif { color: #0f172a; }

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

/* ===== SERVICE CARDS ===== */
.service-card {
    transform: translateY(0);
}
.service-card:hover {
    transform: translateY(-4px);
}

/* ===== TESTIMONIAL CARDS ===== */
.testimonial-card {
    transform: translateY(0);
}
.testimonial-card:hover {
    transform: translateY(-3px);
}

/* ===== PROCESS STEPS ===== */
.process-step {
    opacity: 1;
}

/* ===== BACK TO TOP ===== */
#backToTop.visible {
    opacity: 1 !important;
    pointer-events: all !important;
}

/* ===== SCROLL REVEAL (progressive enhancement) ===== */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.6s ease, transform 0.6s 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; }
}

/* ===== FLOATING CARDS ANIMATION ===== */
@media (prefers-reduced-motion: no-preference) {
    .float-1 { animation: float1 4s ease-in-out infinite; }
    .float-2 { animation: float2 5s ease-in-out infinite; }
    .float-3 { animation: float3 4.5s ease-in-out infinite; }
}
@keyframes float1 {
    0%, 100% { transform: rotate(1deg) translateY(0); }
    50% { transform: rotate(1deg) translateY(-8px); }
}
@keyframes float2 {
    0%, 100% { transform: rotate(-1deg) translateY(0); }
    50% { transform: rotate(-1deg) translateY(-6px); }
}
@keyframes float3 {
    0%, 100% { transform: rotate(2deg) translateY(0); }
    50% { transform: rotate(2deg) translateY(-10px); }
}