/* ============================================
   BREZINSKI DENTAL — Modern Marketing Site
   Colors: Forest Green (#166534) + Off-White (#F8F7F4)
   ============================================ */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --green-900: #052e16;
    --green-800: #14532d;
    --green-700: #166534;
    --green-600: #15803d;
    --green-500: #16a34a;
    --green-100: #dcfce7;
    --green-50:  #f0fdf4;
    --orange-600: #ea580c;
    --orange-500: #f97316;
    --purple-600: #9333ea;
    --red-600: #dc2626;
    --blue-600: #0284c7;
    --yellow-600: #ca8a04;
    --cream: #F8F7F4;
    --cream-dark: #F0EDE8;
    --white: #FFFFFF;
    --dark: #0F1C12;
    --gray-600: #4B5563;
    --gray-500: #6B7280;
    --gray-400: #9CA3AF;
    --gray-200: #E5E7EB;
    --gray-100: #F3F4F6;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    color: var(--dark);
    background: var(--cream);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
    font-family: 'Playfair Display', Georgia, serif;
    line-height: 1.2;
    font-weight: 700;
}

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

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* SKIP LINK */
.skip-link {
    position: absolute;
    top: -100%;
    left: 16px;
    background: var(--green-700);
    color: var(--white);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    z-index: 1000;
    font-weight: 600;
}
.skip-link:focus {
    top: 16px;
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(248, 247, 244, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(22, 101, 52, 0.08);
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Playfair Display', serif;
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--green-700);
}

.logo-icon {
    display: flex;
    align-items: center;
    color: var(--green-700);
}

.logo-light {
    color: var(--white);
}

.logo-light .logo-icon {
    color: var(--white);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-menu a {
    font-size: 0.938rem;
    font-weight: 500;
    color: var(--gray-600);
    transition: color var(--transition);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--green-700);
    transition: width var(--transition);
}

.nav-menu a:hover {
    color: var(--green-700);
}

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

/* MOBILE TOGGLE */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 101;
}

.mobile-toggle .bar {
    width: 24px;
    height: 2.5px;
    background: var(--green-700);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-toggle[aria-expanded="true"] .bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.mobile-toggle[aria-expanded="true"] .bar:nth-child(2) {
    opacity: 0;
}
.mobile-toggle[aria-expanded="true"] .bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: 0.938rem;
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
    padding: 12px 24px;
}

.btn-primary {
    background: var(--green-700);
    color: var(--white);
    border-color: var(--green-700);
}
.btn-primary:hover {
    background: var(--green-800);
    border-color: var(--green-800);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(22, 101, 52, 0.3);
}

.btn-outline-light {
    background: transparent;
    color: var(--white);
    border-color: rgba(255,255,255,0.6);
}
.btn-outline-light:hover {
    background: var(--white);
    color: var(--green-700);
    border-color: var(--white);
}

.btn-outline-white {
    background: transparent;
    color: var(--green-700);
    border-color: var(--white);
}
.btn-outline-white:hover {
    background: var(--white);
    transform: translateY(-2px);
}

.btn-white {
    background: var(--white);
    color: var(--green-700);
    border-color: var(--white);
}
.btn-white:hover {
    background: var(--cream);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-ghost {
    background: transparent;
    color: var(--green-700);
    border-color: var(--green-100);
}
.btn-ghost:hover {
    background: var(--green-50);
}

.btn-sm { padding: 8px 16px; font-size: 0.875rem; }
.btn-lg { padding: 16px 32px; font-size: 1rem; }
.btn-full { width: 100%; justify-content: center; }

/* ============================================
   SECTION HEADERS
   ============================================ */
.section-tag {
    display: inline-block;
    font-size: 0.813rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--green-600);
    background: var(--green-100);
    padding: 6px 14px;
    border-radius: 50px;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    color: var(--dark);
    margin-bottom: 16px;
}

.section-desc, .about-text, .contact-desc {
    font-size: 1.063rem;
    color: var(--gray-500);
    max-width: 600px;
    line-height: 1.7;
}

.section-header--center {
    text-align: center;
}
.section-header--center .section-desc {
    margin: 0 auto;
}

/* ============================================
   HERO
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--green-900);
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.35;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(5, 46, 22, 0.92) 0%,
        rgba(22, 101, 52, 0.85) 50%,
        rgba(20, 83, 45, 0.80) 100%
    );
}

.hero-shape {
    position: absolute;
    z-index: 1;
    opacity: 0.12;
    pointer-events: none;
}

.hero-shape--top {
    width: 500px;
    height: 500px;
    background: var(--orange-500);
    border-radius: 50%;
    top: -150px;
    right: -100px;
    filter: blur(80px);
}

.hero-shape--bottom {
    width: 400px;
    height: 400px;
    background: var(--green-500);
    border-radius: 50%;
    bottom: -100px;
    left: -80px;
    filter: blur(60px);
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 120px 0 80px;
    max-width: 720px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.2);
    backdrop-filter: blur(8px);
    color: var(--green-100);
    font-size: 0.813rem;
    font-weight: 600;
    padding: 8px 18px;
    border-radius: 50px;
    margin-bottom: 28px;
    letter-spacing: 0.04em;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    color: var(--white);
    margin-bottom: 24px;
    line-height: 1.1;
}

.hero-title .text-accent {
    color: var(--orange-500);
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.188rem);
    color: rgba(255,255,255,0.8);
    line-height: 1.7;
    margin-bottom: 40px;
    max-width: 560px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 56px;
}

.hero-trust {
    display: flex;
    flex-wrap: wrap;
    gap: 32px;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255,255,255,0.85);
    font-size: 0.938rem;
    font-weight: 500;
}

.trust-item svg {
    color: var(--orange-500);
    flex-shrink: 0;
}

.hero-wave {
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    z-index: 3;
    line-height: 0;
}

.hero-wave svg {
    width: 100%;
    height: 80px;
    fill: var(--cream);
}

/* ============================================
   SERVICES
   ============================================ */
.services {
    position: relative;
    padding: 100px 0;
    background: var(--cream);
    overflow: hidden;
}

.services-shapes {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.geo-shape {
    position: absolute;
    opacity: 0.06;
}

.geo-shape--circle {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: var(--green-700);
    top: 60px;
    right: -80px;
}

.geo-shape--square {
    width: 180px;
    height: 180px;
    background: var(--orange-600);
    bottom: 40px;
    left: -40px;
    transform: rotate(25deg);
}

.geo-shape--triangle {
    width: 0;
    height: 0;
    border-left: 100px solid transparent;
    border-right: 100px solid transparent;
    border-bottom: 173px solid var(--purple-600);
    opacity: 0.04;
    top: 200px;
    left: 60px;
    transform: rotate(-15deg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    position: relative;
    z-index: 1;
}

.service-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    border: 1px solid var(--gray-200);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--green-700);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.service-card h3 {
    font-family: 'Inter', sans-serif;
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 10px;
}

.service-card p {
    font-size: 0.938rem;
    color: var(--gray-500);
    line-height: 1.65;
}

/* ============================================
   ABOUT
   ============================================ */
.about {
    padding: 100px 0;
    background: var(--white);
    overflow: hidden;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.about-visual {
    position: relative;
}

.about-img-wrap {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    aspect-ratio: 6/7;
}

.about-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-img-accent {
    position: absolute;
    width: 200px;
    height: 200px;
    background: var(--orange-500);
    border-radius: var(--radius-xl);
    bottom: -30px;
    right: -30px;
    z-index: -1;
    opacity: 0.2;
}

.about-stat-card {
    position: absolute;
    bottom: 40px;
    left: -20px;
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 24px 32px;
    box-shadow: var(--shadow-lg);
    text-align: center;
    z-index: 2;
}

.stat-number {
    display: block;
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--green-700);
    line-height: 1;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 0.813rem;
    font-weight: 600;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.about-content {
    max-width: 520px;
}

.about-content .section-title {
    margin-bottom: 24px;
}

.about-text {
    margin-bottom: 16px;
}

.about-features {
    list-style: none;
    display: grid;
    gap: 14px;
    margin: 32px 0;
}

.about-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1rem;
    font-weight: 500;
    color: var(--dark);
}

.about-features svg {
    flex-shrink: 0;
}

/* ============================================
   CTA BANNER
   ============================================ */
.cta-banner {
    position: relative;
    padding: 96px 0;
    background: var(--green-700);
    overflow: hidden;
}

.cta-bg-shape {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(234, 88, 12, 0.2) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 50%, rgba(147, 51, 234, 0.15) 0%, transparent 60%);
    pointer-events: none;
}

.cta-content {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
}

.cta-text {
    flex: 1;
    min-width: 280px;
}

.cta-title {
    font-size: clamp(1.5rem, 3.5vw, 2.5rem);
    color: var(--white);
    margin-bottom: 16px;
}

.cta-desc {
    font-size: 1.063rem;
    color: rgba(255,255,255,0.75);
    line-height: 1.7;
    max-width: 480px;
}

.cta-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

/* ============================================
   INSURANCE
   ============================================ */
.insurance {
    padding: 100px 0;
    background: var(--cream);
}

.insurance-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.insurance-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    text-align: center;
    border: 1px solid var(--gray-200);
    transition: all var(--transition);
}

.insurance-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.insurance-card svg {
    margin: 0 auto 20px;
    width: 48px;
    height: 48px;
}

.insurance-card h3 {
    font-family: 'Inter', sans-serif;
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 10px;
}

.insurance-card p {
    font-size: 0.938rem;
    color: var(--gray-500);
    line-height: 1.65;
}

/* ============================================
   CONTACT
   ============================================ */
.contact {
    padding: 100px 0;
    background: var(--white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.contact-info .section-title {
    margin-bottom: 16px;
}

.contact-desc {
    margin-bottom: 36px;
}

.contact-details {
    display: grid;
    gap: 24px;
    margin-bottom: 32px;
}

.contact-item {
    display: flex;
    gap: 16px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: var(--green-50);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--green-700);
}

.contact-item strong {
    display: block;
    font-size: 0.813rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--green-700);
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 0.938rem;
    color: var(--gray-600);
    line-height: 1.6;
}

.contact-item a {
    color: var(--gray-600);
    transition: color var(--transition);
}

.contact-item a:hover {
    color: var(--green-700);
}

.contact-map {
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

/* FORM */
.contact-form-wrap {
    position: relative;
}

.form-accent {
    position: absolute;
    width: 120px;
    height: 120px;
    background: var(--green-700);
    border-radius: var(--radius-xl);
    top: -20px;
    right: -20px;
    opacity: 0.08;
    pointer-events: none;
}

.form-title {
    font-size: 1.5rem;
    color: var(--dark);
    margin-bottom: 28px;
}

.contact-form {
    background: var(--cream);
    border-radius: var(--radius-lg);
    padding: 36px;
    border: 1px solid var(--gray-200);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-family: 'Inter', sans-serif;
    font-size: 0.938rem;
    color: var(--dark);
    background: var(--white);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-400);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--green-600);
    box-shadow: 0 0 0 3px rgba(22, 101, 52, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-success {
    text-align: center;
    padding: 48px 36px;
    background: var(--cream);
    border-radius: var(--radius-lg);
    border: 1px solid var(--green-100);
}

.success-icon {
    width: 72px;
    height: 72px;
    background: var(--green-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.form-success h4 {
    font-size: 1.375rem;
    color: var(--dark);
    margin-bottom: 8px;
}

.form-success p {
    font-size: 0.938rem;
    color: var(--gray-500);
    margin-bottom: 24px;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--green-900);
    color: rgba(255,255,255,0.7);
    padding: 72px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr;
    gap: 48px;
    padding-bottom: 56px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand p {
    margin-top: 16px;
    font-size: 0.938rem;
    line-height: 1.7;
    max-width: 300px;
}

.footer-links h4,
.footer-contact h4 {
    font-family: 'Inter', sans-serif;
    font-size: 0.813rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--white);
    margin-bottom: 20px;
}

.footer-links ul,
.footer-contact ul {
    list-style: none;
    display: grid;
    gap: 12px;
}

.footer-links a,
.footer-contact a {
    font-size: 0.938rem;
    color: rgba(255,255,255,0.6);
    transition: color var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-links a:hover,
.footer-contact a:hover {
    color: var(--white);
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.938rem;
}

.footer-contact svg {
    flex-shrink: 0;
    margin-top: 3px;
    opacity: 0.6;
}

.footer-bottom {
    padding: 24px 0;
}

.footer-bottom-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.813rem;
    color: rgba(255,255,255,0.4);
}

.footer-bottom a {
    color: rgba(255,255,255,0.5);
    transition: color var(--transition);
}

.footer-bottom a:hover {
    color: var(--white);
}

/* ============================================
   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);
    }
}

/* Fallback: always visible if JS disabled or reduced motion */
@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
    }
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .about-grid {
        gap: 48px;
    }
    .insurance-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .insurance-grid .insurance-card:last-child {
        grid-column: span 2;
        max-width: 400px;
        justify-self: center;
    }
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--cream);
        flex-direction: column;
        align-items: flex-start;
        padding: 100px 32px 32px;
        gap: 24px;
        box-shadow: var(--shadow-lg);
        transition: right var(--transition);
        z-index: 99;
    }

    .nav-menu.open {
        right: 0;
    }

    .nav-menu a {
        font-size: 1.063rem;
    }

    .nav-menu .btn {
        margin-top: 8px;
    }

    .hero-content {
        padding: 100px 0 100px;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        justify-content: center;
    }

    .hero-trust {
        gap: 20px;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .about-grid {
        grid-template-columns: 1fr;
    }

    .about-visual {
        max-width: 480px;
        margin: 0 auto;
    }

    .about-content {
        max-width: 100%;
    }

    .cta-content {
        flex-direction: column;
        text-align: center;
    }

    .cta-actions {
        justify-content: center;
    }

    .insurance-grid {
        grid-template-columns: 1fr;
    }

    .insurance-grid .insurance-card:last-child {
        grid-column: span 1;
        max-width: 100%;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .footer-bottom-inner {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-content {
        padding: 90px 0 90px;
    }

    .services, .about, .insurance, .contact {
        padding: 72px 0;
    }

    .service-card {
        padding: 28px 22px;
    }

    .contact-form {
        padding: 24px;
    }

    .about-stat-card {
        left: 0;
        bottom: 20px;
    }
}

/* Mobile nav overlay */
.nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 98;
}

.nav-overlay.active {
    display: block;
}