/* Base & Reset */
*, *::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: #fde68a;
    color: #2b121c;
}

/* Scroll animations — progressive enhancement via JS */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                    transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    .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; }
}

/* Scroll line animation */
@keyframes scrollLine {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(100%); }
}

.animate-scrollLine {
    animation: scrollLine 1.5s ease-in-out infinite;
}

/* Navbar scroll state */
nav.scrolled {
    background: rgba(250, 245, 247, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(142, 68, 104, 0.08);
}

nav.scrolled .nav-link {
    color: #5f2d44;
}

nav.scrolled .nav-link:hover {
    color: #d97706;
}

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

.mobile-menu-open .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(3px, 3px);
}

.mobile-menu-open .menu-line:nth-child(2) {
    transform: rotate(-45deg) translate(0px, 0px);
}

.mobile-menu-open body {
    overflow: hidden;
}

/* Service card hover */
.service-card {
    transition: border-color 0.5s ease, transform 0.5s ease, box-shadow 0.5s ease;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(43, 18, 28, 0.15);
}

/* Approach items */
.approach-item {
    transition: transform 0.3s ease;
}

.approach-item:hover {
    transform: translateX(8px);
}

/* Input focus glow */
input:focus, textarea:focus {
    box-shadow: 0 0 0 3px rgba(142, 68, 104, 0.08);
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: #faf5f7;
}

::-webkit-scrollbar-thumb {
    background: #dbb5c8;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #c489aa;
}

/* Mobile menu link animation */
.mobile-link {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
}

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

.mobile-menu-open .mobile-link:nth-child(1) { transition-delay: 0.1s; }
.mobile-menu-open .mobile-link:nth-child(2) { transition-delay: 0.15s; }
.mobile-menu-open .mobile-link:nth-child(3) { transition-delay: 0.2s; }
.mobile-menu-open .mobile-link:nth-child(4) { transition-delay: 0.25s; }
.mobile-menu-open .mobile-link:nth-child(5) { transition-delay: 0.3s; }