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

html {
    scroll-behavior: smooth;
    -webkit-tap-highlight-color: transparent;
}

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

::selection {
    background: #bbf7d0;
    color: #166534;
}

/* ============ NAVBAR ============ */
#navbar {
    background: transparent;
    transition: background 0.3s ease, box-shadow 0.3s ease, backdrop-filter 0.3s ease;
}

#navbar.scrolled {
    background: rgba(254, 254, 238, 0.92);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 20px rgba(22, 101, 52, 0.08);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: #166534;
    border-radius: 1px;
    transition: width 0.2s ease, left 0.2s ease;
}

.nav-link:hover::after {
    width: 60%;
    left: 20%;
}

/* ============ HERO FLOATING CARDS ============ */
.card-float-1 {
    animation: float1 4s ease-in-out infinite;
}

.card-float-2 {
    animation: float2 5s ease-in-out infinite;
}

.card-float-3 {
    animation: float3 4.5s ease-in-out infinite;
}

@keyframes float1 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

@keyframes float2 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-16px); }
}

@keyframes float3 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

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

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #166534, #4ade80);
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 3rem 3rem 0 0;
}

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

/* ============ MOBILE MENU ============ */
.mobile-link {
    display: block;
}

/* ============ SCROLL REVEAL (progressive enhancement) ============ */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.6s ease, transform 0.6s ease;
    }

    .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; }
}

/* ============ MOBILE MENU ANIMATION ============ */
#mobileMenu {
    animation: slideDown 0.25s ease;
}

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

/* ============ BUTTON HOVER EFFECTS ============ */
a:hover {
    transition: all 0.2s ease;
}

/* ============ FORM FOCUS STATES ============ */
input:focus, textarea:focus {
    outline: none;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 767px) {
    .font-serif {
        font-size: 2.25rem;
        line-height: 1.1;
    }

    #hero {
        min-height: auto;
        padding-top: 6rem;
        padding-bottom: 4rem;
    }

    /* Hide floating cards on mobile, show a simplified version */
    .card-float-1,
    .card-float-2,
    .card-float-3 {
        display: none;
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .font-serif {
        font-size: 3rem;
    }
}

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

::-webkit-scrollbar-track {
    background: #fefce8;
}

::-webkit-scrollbar-thumb {
    background: #bbf7d0;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #86efac;
}