/* ===== Base & Utilities ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    overflow-x: hidden;
}

/* ===== Scroll Reveal Animations ===== */
.reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.7s cubic-bezier(0.22, 0.61, 0.36, 1), transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.reveal[data-delay="1"] { transition-delay: 0.1s; }
.reveal[data-delay="2"] { transition-delay: 0.2s; }
.reveal[data-delay="3"] { transition-delay: 0.3s; }
.reveal[data-delay="4"] { transition-delay: 0.4s; }
.reveal[data-delay="5"] { transition-delay: 0.5s; }

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

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

/* ===== Service Card Hover ===== */
.service-card {
    transition: transform 0.4s cubic-bezier(0.22, 0.61, 0.36, 1), box-shadow 0.4s ease, border-color 0.4s ease;
}

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

/* ===== Navbar Transition ===== */
#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, 0.06);
}

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

#mobile-menu.open .mobile-link {
    animation: fadeInUp 0.4s cubic-bezier(0.22, 0.61, 0.36, 1) forwards;
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Hamburger Animation ===== */
.menu-line {
    transition: transform 0.3s ease, opacity 0.3s ease;
}

#mobile-toggle.active .menu-line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

#mobile-toggle.active .menu-line:nth-child(2) {
    opacity: 0;
}

#mobile-toggle.active .menu-line:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* ===== Gallery Item ===== */
.gallery-item {
    overflow: hidden;
}

.gallery-item img {
    transition: transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ===== Testimonial Card ===== */
.testimonial-card {
    transition: transform 0.4s ease, background 0.4s ease;
}

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

/* ===== Back to Top ===== */
#back-to-top.visible {
    opacity: 1;
    pointer-events: all;
}

/* ===== Custom Select Arrow ===== */
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='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

select:focus {
    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='%230d9488' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
}