/* ======================================
   BIOWARE — Premium Eco-Friendly Disposables
   Design System & Styles
   ====================================== */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&family=Inter:wght@300;400;500;600;700&display=swap');

/* ---------- CSS Custom Properties ---------- */
:root {
    /* Palette */
    --bg-primary: #FDFBF7;
    --bg-secondary: #F7F3ED;
    --bg-tertiary: #EFE9DF;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-card-hover: rgba(255, 255, 255, 0.95);

    --gold: #B8953F;
    --gold-light: #D4B86A;
    --gold-dark: #96782F;
    --green: #5B8C5A;
    --green-light: #7AAC79;
    --green-dark: #3D6B3C;

    --text-primary: #2C2C2C;
    --text-secondary: #5A5A5A;
    --text-tertiary: #8A8A8A;
    --text-inverse: #FDFBF7;

    --border: rgba(184, 149, 63, 0.15);
    --shadow-sm: 0 2px 8px rgba(44, 44, 44, 0.04);
    --shadow-md: 0 4px 20px rgba(44, 44, 44, 0.08);
    --shadow-lg: 0 8px 40px rgba(44, 44, 44, 0.12);
    --shadow-gold: 0 4px 20px rgba(184, 149, 63, 0.15);

    /* Typography */
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --section-padding: 100px 0;
    --container-width: 1200px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;

    /* Transitions */
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --duration: 0.35s;
}

/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    color: var(--text-primary);
    background: var(--bg-primary);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    width: 100%;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--duration) var(--ease);
}

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

ul {
    list-style: none;
}

.container {
    width: min(var(--container-width), 90%);
    margin: 0 auto;
}

/* ---------- Typography ---------- */
h1,
h2,
h3,
h4 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.25;
    color: var(--text-primary);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 3.5vw, 2.8rem);
}

h3 {
    font-size: clamp(1.3rem, 2vw, 1.6rem);
}

h4 {
    font-size: 1.15rem;
}

.section-subtitle {
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 12px;
}

.section-title {
    margin-bottom: 20px;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 650px;
    margin: 0 auto 50px;
}

.text-center {
    text-align: center;
}

.gold-line {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--gold), var(--gold-light));
    border: none;
    border-radius: 2px;
    margin: 16px auto 0;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 34px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: all var(--duration) var(--ease);
    letter-spacing: 0.3px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gold), var(--gold-dark));
    color: var(--text-inverse);
    box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(184, 149, 63, 0.3);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-inverse);
    border: 2px solid rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(8px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--gold);
    border: 2px solid var(--gold);
}

.btn-outline:hover {
    background: var(--gold);
    color: var(--text-inverse);
    transform: translateY(-2px);
}

.btn-whatsapp {
    background: #25D366;
    color: #fff;
}

.btn-whatsapp:hover {
    background: #1EBE5D;
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(37, 211, 102, 0.3);
}

.btn svg,
.btn i {
    width: 18px;
    height: 18px;
}

/* ---------- Navigation ---------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 22px 0;
    background: linear-gradient(180deg, rgba(20, 18, 12, 0.55) 0%, rgba(20, 18, 12, 0) 100%);
    transition: all 0.45s var(--ease);
}

.navbar.scrolled {
    background: rgba(253, 251, 247, 0.97);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    padding: 14px 0;
    box-shadow: 0 1px 0 rgba(184, 149, 63, 0.15), 0 4px 24px rgba(44, 44, 44, 0.06);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--green-dark);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
    transition: all 0.45s var(--ease);
    letter-spacing: 0.5px;
}

.logo span {
    color: var(--green-light);
    text-shadow: 0 2px 8px rgba(122, 172, 121, 0.3);
}

.navbar.scrolled .logo {
    color: var(--green-dark);
    text-shadow: none;
}

.navbar.scrolled .logo span {
    color: var(--green-light);
    text-shadow: none;
}

.brand-name {
    color: var(--green-dark);
    font-weight: inherit;
}

.brand-name span {
    color: var(--green-light);
}

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

.nav-links a {
    font-size: 0.88rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    letter-spacing: 0.6px;
    position: relative;
    padding: 6px 2px;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
    transition: all var(--duration) var(--ease);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--gold-light);
    border-radius: 1px;
    transition: width var(--duration) var(--ease);
}

.nav-links a:hover {
    color: #fff;
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.navbar.scrolled .nav-links a {
    color: var(--text-secondary);
    text-shadow: none;
}

.navbar.scrolled .nav-links a:hover {
    color: var(--gold-dark);
}

.navbar.scrolled .nav-links a.active {
    color: var(--gold-dark);
}

.nav-cta {
    padding: 10px 28px !important;
    background: linear-gradient(135deg, var(--gold), var(--gold-dark)) !important;
    color: #fff !important;
    border-radius: 50px;
    font-weight: 600 !important;
    text-shadow: none !important;
    box-shadow: 0 2px 12px rgba(184, 149, 63, 0.25);
    transition: all var(--duration) var(--ease);
}

.nav-cta::after {
    display: none !important;
}

.nav-cta:hover {
    background: linear-gradient(135deg, var(--gold-dark), #7A6226) !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(184, 149, 63, 0.35);
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    z-index: 1001;
    background: none;
    border: none;
    padding: 6px;
}

.hamburger span {
    width: 28px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: all 0.3s var(--ease);
}

.navbar.scrolled .hamburger span {
    background: var(--text-primary);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ---------- Hero Section ---------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding-top: 100px;
    /* Accounts for fixed header */
}

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

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

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg,
            rgba(30, 28, 22, 0.75) 0%,
            rgba(44, 40, 30, 0.6) 50%,
            rgba(60, 55, 40, 0.5) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(184, 149, 63, 0.15);
    border: 1px solid rgba(184, 149, 63, 0.3);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--gold-light);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 24px;
    backdrop-filter: blur(10px);
}

.hero h1 {
    color: var(--text-inverse);
    margin-bottom: 20px;
    font-weight: 700;
}

.hero h1 em {
    font-style: italic;
    color: var(--gold-light);
}

.hero-text {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.15rem;
    line-height: 1.8;
    margin-bottom: 36px;
    max-width: 560px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 32px;
    margin-top: 56px;
    padding-top: 36px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-item h3 {
    color: var(--gold-light);
    font-size: 2rem;
    margin-bottom: 4px;
}

.stat-item p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.5px;
}

/* ---------- About Section ---------- */
.about {
    padding: var(--section-padding);
    background: var(--bg-primary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.about-image img {
    width: 100%;
    height: 480px;
    object-fit: cover;
    border-radius: var(--radius-lg);
}

.about-image-badge {
    position: absolute;
    bottom: 24px;
    left: 24px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    padding: 16px 24px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.about-image-badge h4 {
    color: var(--gold);
    font-size: 1.6rem;
    margin-bottom: 2px;
}

.about-image-badge p {
    color: var(--text-secondary);
    font-size: 0.82rem;
}

.about-content .section-subtitle {
    text-align: left;
}

.about-content .section-title {
    text-align: left;
}

.about-content .gold-line {
    margin: 16px 0 0;
}

.about-text {
    color: var(--text-secondary);
    font-size: 1.02rem;
    margin-top: 24px;
    line-height: 1.85;
}

.about-text p+p {
    margin-top: 16px;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 32px;
}

.about-feature {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}

.about-feature-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, rgba(184, 149, 63, 0.1), rgba(184, 149, 63, 0.05));
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.2rem;
}

.about-feature h4 {
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 2px;
}

.about-feature p {
    color: var(--text-tertiary);
    font-size: 0.82rem;
}

/* ---------- Products Section ---------- */
.products {
    padding: var(--section-padding);
    background: var(--bg-secondary);
}

.product-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.product-tab {
    padding: 10px 24px;
    border-radius: 50px;
    border: 1.5px solid var(--border);
    background: var(--bg-card);
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--duration) var(--ease);
}

.product-tab:hover {
    border-color: var(--gold);
    color: var(--gold);
}

.product-tab.active {
    background: linear-gradient(135deg, var(--gold), var(--gold-dark));
    color: #fff;
    border-color: var(--gold);
    box-shadow: var(--shadow-gold);
}

.product-category {
    display: none;
}

.product-category.active {
    display: block;
    animation: fadeInUp 0.5s var(--ease);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 30px;
    margin-bottom: 40px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.category-image {
    width: 340px;
    height: 240px;
    flex-shrink: 0;
}

.category-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.category-info {
    padding: 30px;
}

.category-info h3 {
    margin-bottom: 8px;
    color: var(--gold-dark);
}

.category-info p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.product-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px;
    text-align: center;
    transition: all var(--duration) var(--ease);
    backdrop-filter: blur(10px);
}

.product-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--gold-light);
}

.product-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(184, 149, 63, 0.12), rgba(91, 140, 90, 0.08));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 1.5rem;
}

.product-card h4 {
    font-family: var(--font-body);
    font-weight: 600;
    margin-bottom: 6px;
}

.product-card p {
    color: var(--text-tertiary);
    font-size: 0.85rem;
}

.product-card .eco-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.72rem;
    color: var(--green);
    background: rgba(91, 140, 90, 0.1);
    padding: 4px 12px;
    border-radius: 50px;
    margin-top: 10px;
    font-weight: 500;
}

/* ---------- Why Choose Bioware Section ---------- */
.why-bioware {
    padding: var(--section-padding);
    background: var(--bg-primary);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-bottom: 48px;
}

.why-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    transition: all var(--duration) var(--ease);
    position: relative;
    overflow: hidden;
}

.why-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--gold), var(--green));
    transform: scaleX(0);
    transition: transform var(--duration) var(--ease);
}

.why-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

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

.why-icon {
    width: 68px;
    height: 68px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(184, 149, 63, 0.1), rgba(184, 149, 63, 0.04));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.8rem;
    transition: all var(--duration) var(--ease);
}

.why-card:hover .why-icon {
    background: linear-gradient(135deg, var(--gold), var(--gold-dark));
    transform: scale(1.05);
}

.why-card:hover .why-icon-inner {
    filter: brightness(10);
}

.why-card h4 {
    margin-bottom: 10px;
    font-family: var(--font-heading);
    font-size: 1.2rem;
}

.why-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
}

.why-statement {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: 40px;
    background: linear-gradient(135deg, rgba(184, 149, 63, 0.06), rgba(91, 140, 90, 0.04));
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.why-statement p {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-style: italic;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ---------- Contact Section ---------- */
.contact {
    padding: var(--section-padding);
    background: var(--bg-secondary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
}

.contact-info {
    padding-right: 20px;
}

.contact-info .section-subtitle {
    text-align: left;
}

.contact-info .section-title {
    text-align: left;
}

.contact-info .gold-line {
    margin: 16px 0 0;
}

.contact-text {
    color: var(--text-secondary);
    font-size: 1.02rem;
    margin-top: 24px;
    line-height: 1.8;
}

.contact-methods {
    margin-top: 36px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: all var(--duration) var(--ease);
}

.contact-method:hover {
    border-color: var(--gold-light);
    box-shadow: var(--shadow-sm);
    transform: translateX(4px);
}

.contact-method-icon {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(184, 149, 63, 0.12), rgba(184, 149, 63, 0.04));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-method h4 {
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.92rem;
    margin-bottom: 2px;
}

.contact-method p {
    color: var(--text-secondary);
    font-size: 0.88rem;
}

.contact-buttons {
    display: flex;
    gap: 12px;
    margin-top: 32px;
}

.contact-form-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
}

.contact-form-wrapper h3 {
    margin-bottom: 8px;
}

.contact-form-wrapper>p {
    color: var(--text-secondary);
    font-size: 0.92rem;
    margin-bottom: 28px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.92rem;
    color: var(--text-primary);
    background: var(--bg-primary);
    transition: all var(--duration) var(--ease);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--gold);
    box-shadow: 0 0 0 3px rgba(184, 149, 63, 0.1);
}

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

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

.form-submit {
    width: 100%;
    margin-top: 8px;
}

/* ---------- Footer ---------- */
.footer {
    background: #1E1C16;
    color: rgba(255, 255, 255, 0.7);
    padding: 72px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .logo {
    font-size: 1.6rem;
    margin-bottom: 16px;
    display: inline-block;
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 24px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: all var(--duration) var(--ease);
}

.footer-social a:hover {
    background: var(--gold);
    border-color: var(--gold);
    transform: translateY(-2px);
}

.footer-col h4 {
    color: #fff;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.5);
    transition: all var(--duration) var(--ease);
}

.footer-col ul li a:hover {
    color: var(--gold-light);
    padding-left: 4px;
}

.footer-bottom {
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.35);
}

/* ---------- Scroll Animations ---------- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.7s var(--ease);
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-8px);
    }
}

/* ---------- Back to Top ---------- */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gold), var(--gold-dark));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--duration) var(--ease);
    box-shadow: var(--shadow-gold);
    border: none;
    z-index: 800;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 30px rgba(184, 149, 63, 0.35);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    .about-grid {
        gap: 40px;
    }

    .why-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

    .category-header {
        flex-direction: column;
    }

    .category-image {
        width: 100%;
        height: 200px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 70px 0;
    }

    .hamburger {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 360px;
        height: 100vh;
        background: rgba(20, 18, 12, 0.85);
        backdrop-filter: blur(15px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 28px;
        transition: right 0.4s var(--ease);
        box-shadow: -10px 0 40px rgba(0, 0, 0, 0.1);
    }

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

    .nav-links a {
        color: #ffffff !important;
        font-size: 1.15rem;
        padding: 12px 20px;
        display: inline-block;
        text-align: center;
    }

    .hero-content {
        text-align: center;
        max-width: 100%;
    }

    .hero-text {
        max-width: 100%;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
        gap: 32px;
        text-align: center;
        flex-wrap: wrap;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .about-image img {
        height: 300px;
    }

    .about-content .section-subtitle,
    .about-content .section-title {
        text-align: center;
    }

    .about-content .gold-line {
        margin: 16px auto 0;
    }

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

    .product-tabs {
        gap: 6px;
    }

    .product-tab {
        padding: 8px 16px;
        font-size: 0.82rem;
    }

    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        gap: 14px;
    }

    .why-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

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

    .contact-info {
        padding-right: 0;
    }

    .contact-info .section-subtitle,
    .contact-info .section-title {
        text-align: center;
    }

    .contact-info .gold-line {
        margin: 16px auto 0;
    }

    .contact-text {
        text-align: center;
    }

    .contact-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-social {
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.8rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
    }

    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }

    .btn {
        padding: 12px 28px;
        font-size: 0.88rem;
    }

    .hero-stats {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 16px;
        justify-content: space-between;
    }

    .stat-item {
        flex: 1 1 40%;
    }

    .contact-form-wrapper {
        padding: 24px;
    }
}