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

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

body {
    overflow-x: hidden;
}

::selection {
    background: rgba(249, 115, 22, 0.3);
    color: #f9fafb;
}

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

::-webkit-scrollbar-track {
    background: #111827;
}

::-webkit-scrollbar-thumb {
    background: #374151;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #4b5563;
}

/* ===== Navbar ===== */
#navbar {
    backdrop-filter: blur(0px);
    transition: background-color 0.4s ease, backdrop-filter 0.4s ease, box-shadow 0.4s ease;
}

#navbar.scrolled {
    background-color: rgba(10, 15, 26, 0.92);
    backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}

/* ===== Mobile Menu ===== */
#mobileMenu {
    animation: slideDown 0.3s ease forwards;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mobile-link {
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(55, 65, 81, 0.5);
    font-size: 1.25rem;
}

.mobile-link:last-child {
    border-bottom: none;
}

/* ===== Service Cards ===== */
.service-card {
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #f97316, transparent);
    opacity: 0;
    transition: opacity 0.5s ease;
}

.service-card:hover::before {
    opacity: 1;
}

/* ===== Gallery ===== */
.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 1rem;
}

/* ===== Scroll Reveal (progressive enhancement) ===== */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

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

/* ===== Form Focus Styles ===== */
input:focus,
select:focus,
textarea:focus {
    outline: none;
}

/* ===== Button Hover Effects ===== */
a, button {
    -webkit-tap-highlight-color: transparent;
}

/* ===== Responsive Typography ===== */
@media (max-width: 640px) {
    .font-serif {
        line-height: 1.1;
    }
}

/* ===== Print Styles ===== */
@media print {
    nav, #contact, footer, .service-card {
        break-inside: avoid;
    }
}