/* ===== Reset & Base ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

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

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in-up {
    animation-name: fadeInUp;
    animation-duration: 0.8s;
    animation-timing-function: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ===== 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[data-reveal="hidden"] {
    opacity: 0;
    transform: translateY(30px);
}

/* ===== Navbar ===== */
#navbar {
    color: rgba(255, 255, 255, 0.9);
}

#navbar.scrolled {
    background: rgba(15, 23, 42, 0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06);
}

.nav-link {
    color: rgba(255, 255, 255, 0.8);
}

.nav-link:hover {
    color: #5eead4;
}

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

#mobile-menu .mobile-menu-link {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease, color 0.3s ease;
}

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

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

/* ===== Hamburger Animation ===== */
.menu-line {
    background-color: currentColor;
}

#mobile-menu-btn[aria-expanded="true"] .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(3px, 3px);
}

#mobile-menu-btn[aria-expanded="true"] .menu-line:nth-child(2) {
    opacity: 0;
    width: 0;
}

#mobile-menu-btn[aria-expanded="true"] .menu-line:nth-child(3) {
    transform: rotate(-45deg) translate(3px, -3px);
    width: 24px;
}

/* ===== Form Styles ===== */
select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

/* ===== Selection ===== */
::selection {
    background: #0f766e;
    color: #f0fdfa;
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    
    .reveal[data-reveal="hidden"] {
        opacity: 1;
        transform: none;
    }
    
    .animate-fade-in-up {
        animation: none;
        opacity: 1;
    }
    
    .group:hover img {
        transform: none;
    }
}

/* ===== Focus Visible ===== */
:focus-visible {
    outline: 2px solid #0f766e;
    outline-offset: 2px;
}