*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'DM Sans', system-ui, sans-serif;
    color: #334155;
    background-color: #ffffff;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Reveal animations */
.reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.reveal-delay-1 { transition-delay: 100ms; }
.reveal-delay-2 { transition-delay: 200ms; }
.reveal-delay-3 { transition-delay: 300ms; }

/* Hero badge animation */
.hero-badge {
    animation: fadeInDown 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.2s both;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hero text animation */
#inicio h1,
#inicio p,
#inicio .flex {
    animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) both;
}

#inicio h1 { animation-delay: 0.3s; }
#inicio p { animation-delay: 0.5s; }
#inicio .flex { animation-delay: 0.7s; }

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Header scroll state */
#site-header.scrolled {
    background: rgba(255, 255, 255, 0.92);
    backdrop-blur-xl;
    border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
}

#site-header.scrolled .font-serif {
    color: #1e293b;
}

#site-header.scrolled .text-slate-500 {
    color: #64748b;
}

/* Nav link hover underline */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    width: 0;
    height: 2px;
    background: #0d9488;
    border-radius: 1px;
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link {
    position: relative;
}

.nav-link:hover::after {
    width: 60%;
}

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

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

/* Service cards */
.service-card {
    transform: translateY(0);
}

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

/* Feature cards */
.feature-card {
    transform: translateY(0);
}

.feature-card:hover {
    transform: translateY(-2px);
}

/* Back to top */
#back-to-top.visible {
    opacity: 1;
    pointer-events: all;
    transform: translateY(0);
}

/* Selection color */
::selection {
    background: #99f6e4;
    color: #134e4a;
}

/* Focus visible */
:focus-visible {
    outline: 2px solid #0d9488;
    outline-offset: 2px;
}

/* Mobile nav links animation */
.mobile-nav-link {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

#mobile-menu.open .mobile-nav-link {
    opacity: 1;
    transform: translateY(0);
}

#mobile-menu.open .mobile-nav-link:nth-child(1) { transition-delay: 0.05s; }
#mobile-menu.open .mobile-nav-link:nth-child(2) { transition-delay: 0.1s; }
#mobile-menu.open .mobile-nav-link:nth-child(3) { transition-delay: 0.15s; }
#mobile-menu.open .mobile-nav-link:nth-child(4) { transition-delay: 0.2s; }
#mobile-menu.open .mobile-nav-link:nth-child(5) { transition-delay: 0.25s; }

/* Smooth image loading */
img {
    opacity: 1;
    transition: opacity 0.3s ease;
}

/* Prevent layout shift */
img, iframe {
    max-width: 100%;
}