/* === BASE & RESET === */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* === SCROLL REVEAL === */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
    }
    
    .reveal.is-visible {
        opacity: 1;
        transform: translateY(0);
    }
}

/* === NAVBAR === */
.nav-text {
    transition: color 0.3s ease;
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: #0d9488;
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

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

#navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.08);
}

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

#navbar.scrolled .nav-text {
    color: #0f172a;
}

/* === MOBILE MENU === */
#mobile-menu {
    animation: slideDown 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mobile-nav-link {
    display: block;
    width: 100%;
    text-align: left;
}

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

/* === SELECTION === */
::selection {
    background: #99f6e4;
    color: #042f2e;
}

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

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #64748b;
}

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

/* === RESPONSIVE TYPE === */
@media (max-width: 640px) {
    .font-serif {
        line-height: 1.15;
    }
}

/* === UTILITY: Subtle image zoom on hover === */
.group:hover .group-hover\\:scale-105 {
    transform: scale(1.05);
}