/* ── Base & Utilities ── */
html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
}

::selection {
    background: #D4A017;
    color: #0F2B4C;
}

/* ── Scroll Animations ── */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered delays */
.service-card:nth-child(1) { transition-delay: 0.05s; }
.service-card:nth-child(2) { transition-delay: 0.1s; }
.service-card:nth-child(3) { transition-delay: 0.15s; }
.service-card:nth-child(4) { transition-delay: 0.2s; }
.service-card:nth-child(5) { transition-delay: 0.25s; }
.service-card:nth-child(6) { transition-delay: 0.3s; }

.testimonial-card:nth-child(1) { transition-delay: 0.05s; }
.testimonial-card:nth-child(2) { transition-delay: 0.12s; }
.testimonial-card:nth-child(3) { transition-delay: 0.19s; }

/* ── Navbar ── */
#navbar {
    background: transparent;
    transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}

#navbar.scrolled {
    background: rgba(253, 248, 240, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 20px rgba(15, 43, 76, 0.08);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: #D4A017;
    border-radius: 1px;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* ── Hero ── */
#hero {
    position: relative;
}

/* ── Service Cards ── */
.service-card {
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1), background 0.4s ease;
}

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

/* ── Testimonial Cards ── */
.testimonial-card {
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.4s ease;
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 50px rgba(15, 43, 76, 0.12);
}

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

/* ── Mobile Menu ── */
#mobile-menu {
    animation: slideDown 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mobile-link {
    display: block;
    padding: 8px 0;
    border-bottom: 1px solid rgba(15, 43, 76, 0.06);
    transition: color 0.2s ease, padding-left 0.2s ease;
}

.mobile-link:hover {
    color: #0F2B4C;
    padding-left: 8px;
}

/* ── 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='%230F2B4C' stroke-width='2.5' 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 16px center;
    appearance: none;
    -webkit-appearance: none;
}

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