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

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

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

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

a {
    text-decoration: none;
    color: inherit;
}

/* ── Scrollbar ────────────────────────────────────────────── */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #F5F7F0;
}
::-webkit-scrollbar-thumb {
    background: #D7CCC8;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #40916C;
}

/* ── Navbar ───────────────────────────────────────────────── */
#navbar {
    background: transparent;
}

#navbar.scrolled {
    background: rgba(250, 251, 248, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 0 rgba(27, 67, 50, 0.08);
}

.nav-logo-text {
    transition: color 0.3s ease;
}

#navbar:not(.scrolled) .nav-logo-text {
    color: #FAFBF8;
}

#navbar.scrolled .nav-logo-text {
    color: #1B4332;
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: #40916C;
    transition: width 0.3s ease;
}

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

#navbar:not(.scrolled) .nav-link {
    color: rgba(250, 251, 248, 0.8);
}

#navbar:not(.scrolled) .nav-link:hover {
    color: #FAFBF8;
}

#navbar:not(.scrolled) .nav-link::after {
    background: #D7CCC8;
}

/* ── Mobile Menu ──────────────────────────────────────────── */
.mobile-nav-link {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.3s ease, transform 0.3s ease, color 0.3s ease;
}

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

#mobile-menu.open .mobile-nav-link:nth-child(1) { transition-delay: 0.05s; }
#mobile-menu.open .mobile-nav-link:nth-child(2) { transition-delay: 0.1s; }
#mobile-menu.open .mobile-nav-link:nth-child(3) { transition-delay: 0.15s; }
#mobile-nav-link:nth-child(4) { transition-delay: 0.2s; }

.menu-line {
    transition: transform 0.3s ease, opacity 0.3s ease;
}

#mobile-menu-btn.active .menu-line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}
#mobile-menu-btn.active .menu-line:nth-child(2) {
    opacity: 0;
}
#mobile-menu-btn.active .menu-line:nth-child(3) {
    transform: translateY(-4px) rotate(-45deg);
    width: 20px;
}

/* ── Hero ─────────────────────────────────────────────────── */
.hero-eyebrow {
    opacity: 0;
    transform: translateY(16px);
    animation: fadeUp 0.7s ease forwards;
    animation-delay: 0.2s;
}

.hero-headline {
    opacity: 0;
    transform: translateY(24px);
    animation: fadeUp 0.8s ease forwards;
    animation-delay: 0.4s;
}

.hero-subheadline {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.8s ease forwards;
    animation-delay: 0.6s;
}

.hero-ctas {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.8s ease forwards;
    animation-delay: 0.8s;
}

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ── Section Headers ──────────────────────────────────────── */
.section-eyebrow {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.section-title {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.6s ease 0.1s, transform 0.6s ease 0.1s;
}

.section-visible .section-eyebrow,
.section-visible .section-title {
    opacity: 1;
    transform: translateY(0);
}

/* ── Service Cards ────────────────────────────────────────── */
.service-card {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.5s ease, transform 0.5s ease, box-shadow 0.4s ease, border-color 0.4s ease;
}

.service-visible .service-card {
    opacity: 1;
    transform: translateY(0);
}

.service-visible .service-card:nth-child(1) { transition-delay: 0s; }
.service-visible .service-card:nth-child(2) { transition-delay: 0.08s; }
.service-visible .service-card:nth-child(3) { transition-delay: 0.16s; }
.service-visible .service-card:nth-child(4) { transition-delay: 0.24s; }
.service-visible .service-card:nth-child(5) { transition-delay: 0.32s; }
.service-visible .service-card:nth-child(6) { transition-delay: 0.40s; }

/* ── About ────────────────────────────────────────────────── */
.about-image-container {
    opacity: 0;
    transform: translateX(-24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.about-visible .about-image-container {
    opacity: 1;
    transform: translateX(0);
}

.about-visible .about-visible .about-image-container > div {
    transition: transform 0.5s ease;
}

.about-visible .about-image-container:hover > div {
    transform: scale(1.01);
}

.about-visible > div:last-child {
    opacity: 1;
    transform: translateX(0);
    transition: opacity 0.7s ease 0.2s, transform 0.7s ease 0.2s;
}

/* ── Why Us ───────────────────────────────────────────────── */
.why-item {
    opacity: 0;
    transform: translateX(16px);
    transition: opacity 0.5s ease, transform 0.5s ease, padding-left 0.3s ease;
}

.why-visible .why-item {
    opacity: 1;
    transform: translateX(0);
}

.why-visible .why-item:nth-child(1) { transition-delay: 0s; }
.why-visible .why-item:nth-child(2) { transition-delay: 0.1s; }
.why-visible .why-item:nth-child(3) { transition-delay: 0.2s; }
.why-visible .why-item:nth-child(4) { transition-delay: 0.3s; }

/* ── Contact Form ─────────────────────────────────────────── */
#contact-form input,
#contact-form textarea {
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

#contact-form input:focus,
#contact-form textarea:focus {
    border-color: #40916C;
    box-shadow: 0 0 0 3px rgba(64, 145, 108, 0.12);
}

/* ── Utility ──────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    html {
        scroll-behavior: auto;
    }
}