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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
}

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

/* Selection */
::selection {
    background: rgba(13, 148, 136, 0.15);
    color: #134e4a;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: #f0fdfa;
}
::-webkit-scrollbar-thumb {
    background: #99f6e4;
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: #5eead4;
}

/* Navbar */
.nav-link {
    position: relative;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: white;
    transition: width 0.3s ease;
}
.nav-link:hover::after {
    width: 100%;
}

.navbar-scrolled .nav-link {
    color: rgba(255, 255, 255, 0.9);
}

/* Mobile Menu */
.mobile-menu-link {
    position: relative;
    transition: color 0.3s ease, transform 0.3s ease;
}
.mobile-menu-link:hover {
    color: white;
    transform: translateX(4px);
}

#mobile-menu.open {
    opacity: 1;
    pointer-events: all;
}

/* Hero */
.hero-bg img {
    will-change: transform;
}

/* Service Cards */
.service-card {
    opacity: 1;
}

/* Form Inputs */
.form-input {
    background: transparent;
    border: none;
    border-bottom: 1px solid #e2e8f0;
    padding: 0.75rem 0;
    outline: none;
    transition: border-color 0.3s ease;
    font-family: 'Montserrat', system-ui, sans-serif;
}
.form-input:focus {
    border-bottom-color: #0d9488;
}
.form-input::placeholder {
    color: #cbd5e1;
}

/* Buttons */
.btn-primary {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}
.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transition: left 0.5s ease;
}
.btn-primary:hover::before {
    left: 100%;
}

/* Reveal Animations */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* Hero Animations */
@media (prefers-reduced-motion: no-preference) {
    .hero-title {
        opacity: 0;
        transform: translateY(20px);
        animation: heroIn 1s ease forwards 0.3s;
    }
    .hero-subtitle {
        opacity: 0;
        transform: translateY(15px);
        animation: heroIn 1s ease forwards 0.1s;
    }
    .hero-desc {
        opacity: 0;
        transform: translateY(15px);
        animation: heroIn 1s ease forwards 0.5s;
    }
    .hero-cta {
        opacity: 0;
        transform: translateY(15px);
        animation: heroIn 1s ease forwards 0.7s;
    }
    .hero-divider {
        opacity: 0;
        animation: fadeIn 0.8s ease forwards 0.9s;
    }
}

@keyframes heroIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

/* Mobile hamburger */
#menu-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.nav-line-1 {
    transform-origin: center;
}
.nav-line-2 {
    transform-origin: center;
}

/* Responsive */
@media (max-width: 767px) {
    .font-serif {
        font-size: clamp(1.75rem, 6vw, 2.5rem);
    }
}