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

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

body {
    margin: 0;
    overflow-x: hidden;
}

::selection {
    background: #FF6B4A;
    color: #0F0F0F;
}

/* ===== NAVBAR ===== */
#navbar {
    background: transparent;
}

#navbar.scrolled {
    background: rgba(15, 15, 15, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 107, 74, 0.1);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

/* ===== MOBILE MENU ===== */
#mobileMenu.open {
    opacity: 1;
    pointer-events: all;
}

#mobileMenu.open .mobile-link {
    animation: slideIn 0.3s ease forwards;
}

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

@keyframes slideIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.menu-line {
    display: block;
}

#menuBtn.active .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

#menuBtn.active .menu-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
    width: 1.5rem;
    margin-right: 0;
    margin-left: 0;
}

/* ===== HERO GEOMETRIC SHAPES ===== */
.hero-geo {
    will-change: transform;
}

.geo-triangle-1 {
    animation: floatSlow 8s ease-in-out infinite;
}

.geo-circle-1 {
    animation: floatSlow 6s ease-in-out infinite reverse;
}

.geo-rect-1 {
    animation: floatSlow 7s ease-in-out infinite;
}

@keyframes floatSlow {
    0%, 100% { transform: translateY(0) rotate(45deg); }
    50% { transform: translateY(-20px) rotate(45deg); }
}

/* ===== SERVICE CARDS ===== */
.service-card {
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #FF6B4A, #FF8A70);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.service-card:hover::before {
    transform: scaleX(1);
}

/* ===== GALLERY ===== */
.gallery-item {
    cursor: pointer;
}

/* ===== SCROLL REVEAL (progressive enhancement) ===== */
@media (prefers-reduced-motion: no-preference) {
    .js-active .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }

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

    .js-active .reveal-delay-1 { transition-delay: 0.1s; }
    .js-active .reveal-delay-2 { transition-delay: 0.2s; }
    .js-active .reveal-delay-3 { transition-delay: 0.3s; }
    .js-active .reveal-delay-4 { transition-delay: 0.4s; }
    .js-active .reveal-delay-5 { transition-delay: 0.5s; }
    .js-active .reveal-delay-6 { transition-delay: 0.6s; }
}

/* ===== 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='%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;
}

/* ===== SPACING UTILITIES ===== */
.reveal {
    /* default state: visible for no-JS */
}

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

.js-active .reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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