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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    display: block;
    max-width: 100%;
}

/* ===== Scroll Reveal (progressive enhancement) ===== */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    }

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

    .reveal:nth-child(2) { transition-delay: 0.08s; }
    .reveal:nth-child(3) { transition-delay: 0.16s; }
    .reveal:nth-child(4) { transition-delay: 0.24s; }
    .reveal:nth-child(5) { transition-delay: 0.32s; }
    .reveal:nth-child(6) { transition-delay: 0.40s; }
}

/* ===== Navigation ===== */
.nav {
    background: rgba(255, 254, 249, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(6, 78, 59, 0.08);
}

.nav.scrolled {
    box-shadow: 0 1px 20px rgba(6, 78, 59, 0.08);
}

.nav-icon-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, #064e3b, #059669);
    border-radius: 10px;
    color: white;
    flex-shrink: 0;
}

.nav-brand {
    letter-spacing: -0.02em;
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: #059669;
    transition: width 0.25s ease;
    border-radius: 1px;
}

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

/* ===== Mobile Menu ===== */
.mobile-menu {
    animation: slideDown 0.3s ease;
}

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

.mobile-link {
    display: block;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(6, 78, 59, 0.08);
}

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

/* ===== Section Label ===== */
.section-label {
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    font-weight: 700;
}

/* ===== Buttons ===== */
.btn-primary {
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.btn-primary:hover::before {
    opacity: 1;
}

/* ===== Hero ===== */
.hero {
    background: linear-gradient(135deg, #fffef9 0%, #f0fdf4 50%, #ecfdf5 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -10%;
    left: -5%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(6, 78, 59, 0.05) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

/* ===== Service Cards ===== */
.service-card {
    opacity: 1;
}

/* ===== Step Cards ===== */
.step-card {
    opacity: 1;
}

/* ===== Form ===== */
input:focus,
textarea:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.15);
}

input::placeholder,
textarea::placeholder {
    color: #a7c4b5;
}

/* ===== Utility ===== */
@media (max-width: 768px) {
    html {
        scroll-padding-top: 72px;
    }
}

/* ===== Subtle hover for images ===== */
.hero-image img,
.about-image img {
    transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.hero-image:hover img,
.about-image:hover img {
    transform: scale(1.02);
}