/* brown Energy Theme Color Palette */
/* Brown & Silver Theme Color Palette */
:root {
    /* Primary brown and silver colors */
    --primary-brown: #8B6B4D;
    --secondary-brown: #6F4E37;
    --accent-brown: #A67C52;
    --dark-brown: #5D4037;
    --light-brown: #D7CEC7;

    --primary-silver: #C0C0C0;
    --secondary-silver: #A8A8A8;
    --accent-silver: #E0E0E0;
    --dark-silver: #808080;
    --light-silver: #F5F5F5;

    /* Modern neutral colors */
    --dark-navy: #1a1a2e;
    --medium-navy: #16213e;
    --light-navy: #0f3460;
    --text-dark: #333333;
    --text-medium: #555555;
    --text-light: #888888;
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --medium-gray: #e9ecef;
    --border-gray: #dee2e6;

    /* Gradient combinations */
    --primary-gradient: linear-gradient(135deg, var(--primary-brown), var(--secondary-brown));
    --silver-gradient: linear-gradient(135deg, var(--primary-silver), var(--secondary-silver));
    --hero-gradient: linear-gradient(135deg, var(--dark-brown) 0%, var(--secondary-brown) 50%, var(--primary-brown) 100%);
    --card-gradient: linear-gradient(135deg, var(--white) 0%, var(--light-silver) 100%);

    /* Modern shadows */
    --shadow-sm: 0 2px 4px rgba(139, 107, 77, 0.1);
    --shadow-md: 0 4px 12px rgba(139, 107, 77, 0.15);
    --shadow-lg: 0 8px 25px rgba(139, 107, 77, 0.2);
    --shadow-xl: 0 15px 35px rgba(139, 107, 77, 0.25);

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}


/* Reset and base styles */
html,
body {
    box-sizing: border-box;
    /* padding: 10px; */
    margin: 0;
}

*,
*::before,
*::after {
    box-sizing: inherit;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

h1 {
    font-size: 3.5rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 2rem;
}

h4 {
    font-size: 1.5rem;
}

h5 {
    font-size: 1.25rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-bottom: 1rem;
    color: var(--text-medium);
    font-weight: 400;
}

/* Modern Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    gap: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

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

.btn-outline:hover {
    background: var(--primary-brown);
    color: white;
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.125rem;
}

.btn-icon {
    transition: transform 0.3s ease;
}

.btn:hover .btn-icon {
    transform: translateX(4px);
}

/* Modern Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-gray);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 5rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-icon {
    background: var(--primary-gradient);
    padding: 0.75rem;
    border-radius: 12px;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.25rem;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-dark);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-dropdown {
    position: relative;
}

.nav-link {
    color: var(--text-medium);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 0;
    font-size: 0.95rem;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-brown);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    min-width: 220px;
    box-shadow: var(--shadow-lg);
    border-radius: 12px;
    border: 1px solid var(--border-gray);
    opacity: 0;
    /* visibility: hidden; */
    display: none;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 1001;
    padding: 0.5rem 0;
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    /* visibility: visible; */
    display: block;
    transform: translateY(0);
}

.dropdown-link {
    display: block;
    padding: 0.75rem 1.5rem;
    color: var(--text-medium);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.dropdown-link:hover {
    color: var(--primary-brown);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 0.25rem;
}

.nav-toggle span {
    width: 1.5rem;
    height: 2px;
    background: var(--text-dark);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 8rem 0 6rem;
    background: var(--hero-gradient);
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(46,204,113,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: white;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-brown), var(--accent-brown));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
}

.subtitle {
    color: rgba(255, 255, 255, 0.8);
    display: block;
    font-size: 1.5rem;
    font-weight: 400;
}

.hero-description {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    max-width: 500px;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-brown);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.hero-visual {
    position: relative;
}

.hero-image {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.hero-image img {
    width: 100%;
    height: 500px;
    object-fit: cover;
}

.floating-card {
    position: absolute;
    background: white;
    padding: 1.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-gray);
    z-index: 10;
}

.floating-card-left {
    top: -1.5rem;
    left: -1.5rem;
}

.floating-card-right {
    bottom: -1.5rem;
    right: -1.5rem;
}

.floating-card svg {
    color: var(--primary-brown);
    margin-bottom: 0.75rem;
}

.card-title {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.25rem;
}

.card-subtitle {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* Overview Section */
.overview {
    padding: 6rem 0;
    background: var(--light-gray);
}

.section-title {
    text-align: center;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.section-description {
    text-align: center;
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto 4rem;
    color: var(--text-medium);
}

.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.overview-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-gray);
    transition: var(--transition);
    text-align: center;
}

.overview-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.overview-icon {
    background: var(--primary-gradient);
    padding: 1.5rem;
    border-radius: 50%;
    color: white;
    width: fit-content;
    margin: 0 auto 1.5rem;
}

.overview-card h3 {
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.overview-card p {
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

/* Page Header */
.page-header {
    padding: 8rem 0 4rem;
    background: var(--hero-gradient);
    text-align: center;
    color: white;
}

.breadcrumb {
    font-size: 0.9rem;
    margin-bottom: 1rem;
    color: rgba(255, 255, 255, 0.7);
}

.breadcrumb a {
    color: var(--primary-brown);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.page-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: white;
}

.page-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.8);
    max-width: 600px;
    margin: 0 auto;
}

/* Content Sections */
.content-section {
    padding: 4rem 0;
    background: var(--white);
}

.content-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
}

.content-main {
    max-width: none;
}

.content-block {
    margin-bottom: 3rem;
}

.content-block h2 {
    color: var(--text-dark);
    margin-bottom: 1.5rem;
}

.content-block h3 {
    color: var(--primary-brown);
    margin-bottom: 1rem;
}

.content-block p {
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

/* Innovation Pillars */
.innovation-pillars {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.pillar-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-gray);
    transition: var(--transition);
}

.pillar-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.pillar-icon {
    background: var(--primary-gradient);
    padding: 1rem;
    border-radius: 12px;
    color: white;
    width: fit-content;
    margin-bottom: 1.5rem;
}

.pillar-card h4 {
    color: var(--text-dark);
    margin-bottom: 1rem;
}

/* Elements Grid */
.elements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.element-card {
    display: flex;
    background: white;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-gray);
    overflow: hidden;
    transition: var(--transition);
}

.element-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.element-symbol {
    background: var(--primary-gradient);
    color: white;
    font-size: 2rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 100px;
    padding: 2rem 1rem;
}

.element-info {
    padding: 2rem;
    flex: 1;
}

.element-info h3 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.element-number {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.element-info p {
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

/* Contact Section */
.contact-section {
    padding: 4rem 0;
    background: var(--light-gray);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
}

.contact-info h2 {
    color: var(--text-dark);
    margin-bottom: 1.5rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-icon {
    background: var(--primary-gradient);
    padding: 0.75rem;
    border-radius: 8px;
    color: white;
    height: fit-content;
}

.contact-details h3 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.contact-details p {
    color: var(--text-medium);
    line-height: 1.5;
}

/* Contact Form */
.contact-form-wrapper {
    background: white;
    border-radius: 16px;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-gray);
}

.contact-form {
    padding: 2rem;
}

.contact-form h2 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.contact-form>p {
    color: var(--text-medium);
    margin-bottom: 2rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-gray);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-brown);
    box-shadow: 0 0 0 3px rgba(46, 204, 113, 0.1);
}

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

.form-note {
    font-size: 0.875rem;
    color: var(--text-light);
    text-align: center;
    margin-top: 1rem;
}

/* Footer */
.footer {
    background: var(--dark-navy);
    color: white;
    padding: 4rem 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand {
    max-width: 350px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.footer-logo .logo-text {
    color: white;
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.footer-title {
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
    color: white;
}

.footer-list {
    list-style: none;
}

.footer-list li {
    margin-bottom: 0.75rem;
}

.footer-link {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-link:hover {
    color: var(--primary-brown);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1.5rem 0;
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
}

.expand-btn {
    display: none;
}

.d-flex{
    display: flex;
}

/* Responsive Design */
@media (max-width: 768px) {
    .expand-btn {
        display: block;
    }

    .container {
        padding: 0 1rem;
    }

    .nav-container {
        padding: 0 1rem;
    }

    .nav-menu {
        position: fixed;
        top: 5rem;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 2rem;
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-dropdown .dropdown-menu {
        position: static;
        opacity: 1;
        transform: none;
        box-shadow: none;
        border: none;
        background: var(--light-gray);
        margin-top: 0.5rem;
        border-radius: 8px;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 2.5rem;
    }

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

    .hero-content {
        justify-items: center;
        text-align: center;
    }

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


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

    .page-title {
        font-size: 2rem;
    }

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

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

    .element-card {
        flex-direction: column;
    }

    .element-symbol {
        min-width: auto;
        padding: 1.5rem;
    }

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

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

    .innovation-pillars {
        grid-template-columns: 1fr;
    }

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

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

.hero-section {
    background: var(--hero-gradient);
    padding: 60px 0 40px 0;
    text-align: center;
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 220px;
    animation: fadeIn 1s;
}

.hero-title {
    font-family: 'Inter', sans-serif;
    font-size: 2.8rem;
    font-weight: 800;
    letter-spacing: 1px;
    margin: 0;
    text-shadow: 0 4px 24px rgba(0,0,0,0.18);
}

.product-details {
    background: var(--card-gradient);
    box-shadow: var(--shadow-md);
    border-radius: 18px;
    max-width: 900px;
    margin: 40px auto;
    padding: 32px 28px;
    font-family: 'Inter', sans-serif;
    animation: fadeInUp 0.8s;
}

.details-content h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 18px;
    color: var(--primary-brown);
}

.details-content ul {
    padding-left: 18px;
    margin: 0;
}

.details-content li {
    font-size: 1.1rem;
    margin-bottom: 12px;
    line-height: 1.6;
    color: var(--text-dark);
}

.products-grid-section {
    max-width: 1200px;
    margin: 48px auto 32px auto;
    padding: 0 16px;
    font-family: 'Inter', sans-serif;
}

.grid-title {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 32px;
    color: var(--primary-brown);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    animation: fadeInUp 1.2s;
}

.product-card {
    background: var(--card-gradient);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    padding: 28px 18px 22px 18px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.product-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-6px) scale(1.03);
}

.product-image {
    width: 90px;
    height: 90px;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 18px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.product-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin: 0 0 10px 0;
    color: var(--dark-brown);
}

.product-card p {
    font-size: 1rem;
    color: var(--text-medium);
    margin: 0;
    line-height: 1.5;
}

@media (max-width: 900px) {
    .products-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }
}

@media (max-width: 600px) {
    .hero-title {
        font-size: 2rem;
    }
    .product-details {
        padding: 18px 8px;
    }
    .products-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }
    .product-card {
        padding: 18px 8px 14px 8px;
    }
}

/* Californium card rich content styling */
.californium-card .element-details {
    list-style: none;
    padding: 0;
    margin: 12px 0 0 0;
    font-size: 1rem;
    color: var(--text-dark);
    text-align: left;
}
.californium-card .element-details li {
    margin-bottom: 6px;
}
.californium-card .element-features {
    margin: 16px 0 0 0;
    font-size: 1rem;
    color: var(--text-medium);
    text-align: left;
}
.californium-card .element-features ul {
    margin: 8px 0 0 0;
    padding-left: 18px;
}
.californium-card .element-features li {
    margin-bottom: 6px;
}
.californium-card .element-fact {
    margin: 18px 0 0 0;
    font-size: 1rem;
    color: var(--primary-brown);
    background: var(--light-silver);
    border-radius: 8px;
    padding: 10px 14px;
    box-shadow: var(--shadow-sm);
    text-align: left;
}

/* Info sections styling */
.info-section {
    background: var(--card-gradient);
    box-shadow: var(--shadow-sm);
    border-radius: 16px;
    max-width: 900px;
    margin: 40px auto 32px auto;
    padding: 32px 24px;
    font-family: 'Inter', sans-serif;
    animation: fadeInUp 0.8s;
}
.section-title {
    font-size: 1.7rem;
    font-weight: 700;
    margin-bottom: 18px;
    color: var(--primary-brown);
    text-align: left;
}
.info-list {
    padding-left: 18px;
    margin: 0;
}
.info-list li {
    font-size: 1.08rem;
    margin-bottom: 12px;
    line-height: 1.6;
    color: var(--text-dark);
}
@media (max-width: 600px) {
    .info-section {
        padding: 16px 6px;
    }
    .section-title {
        font-size: 1.2rem;
    }
    .info-list li {
        font-size: 0.98rem;
    }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Smooth scrolling offset for fixed nav */
section {
    scroll-margin-top: 5rem;
}

/* Additional modern touches */
.btn,
.overview-card,
.element-card,
.pillar-card,
.contact-form-wrapper {
    will-change: transform;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(180deg, transparent 0%, var(--light-gray) 100%);
    z-index: 1;
}

/* Single Californium card styles */
.single-product-grid {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 0;
}
.californium-card {
    max-width: 600px;
    width: 100%;
    margin: 0 auto;
    background: var(--card-gradient);
    border-radius: 18px;
    box-shadow: var(--shadow-lg);
    padding: 38px 28px 28px 28px;
    text-align: left;
    font-family: 'Inter', sans-serif;
    animation: fadeInUp 1s;
}
.californium-card h3 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-brown);
    margin-bottom: 18px;
}
.californium-card .element-details {
    list-style: none;
    padding: 0;
    margin: 12px 0 0 0;
    font-size: 1.08rem;
    color: var(--text-dark);
}
.californium-card .element-details li {
    margin-bottom: 6px;
}
.californium-card .element-features {
    margin: 18px 0 0 0;
    font-size: 1.08rem;
    color: var(--text-medium);
}
.californium-card .element-features ul {
    margin: 8px 0 0 0;
    padding-left: 18px;
}
.californium-card .element-features li {
    margin-bottom: 6px;
}
.californium-card .element-fact {
    margin: 18px 0 0 0;
    font-size: 1.08rem;
    color: var(--primary-brown);
    background: var(--light-silver);
    border-radius: 8px;
    padding: 10px 14px;
    box-shadow: var(--shadow-sm);
}
.gallery-row {
    display: flex;
    gap: 12px;
    margin-top: 10px;
}
.gallery-img {
    width: 90px;
    height: 90px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.gallery-img:hover {
    transform: scale(1.08);
    box-shadow: var(--shadow-lg);
}
@media (max-width: 700px) {
    .californium-card {
        padding: 18px 8px 14px 8px;
    }
    .gallery-row {
        flex-direction: column;
        gap: 8px;
    }
    .gallery-img {
        width: 100%;
        height: 70px;
    }
}

.about-section {
  margin: 32px auto 18px auto;
  max-width: 700px;
  text-align: center;
}
.about-summary p {
  font-size: 1.15rem;
  color: var(--text-dark);
  margin: 8px 0;
  font-family: 'Inter', sans-serif;
}
.property-cards {
  margin: 32px auto 24px auto;
  max-width: 600px;
}
.property-row {
  display: flex;
  justify-content: center;
  gap: 18px;
  margin-bottom: 18px;
}
.center-row {
  justify-content: center;
  gap: 18px;
}
.property-card {
  background: var(--dark-brown);
  color: var(--white);
  border-radius: 14px;
  box-shadow: var(--shadow-md);
  padding: 18px 24px;
  min-width: 120px;
  text-align: center;
  font-family: 'Inter', sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: var(--transition);
}
.property-card .property-label {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
  opacity: 0.8;
}
.property-card .property-value {
  font-size: 1.3rem;
  font-weight: 800;
}
.gradient-card {
  background: linear-gradient(135deg, var(--dark-brown) 60%, var(--primary-brown) 100%);
  color: var(--white);
}
.features-section.gradient-bg {
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  background: linear-gradient(135deg, var(--dark-brown) 0%, var(--primary-brown) 100%);
  border-radius: 18px;
  box-shadow: var(--shadow-lg);
  padding: 38px 28px;
  margin: 40px auto 32px auto;
  max-width: 900px;
  color: var(--white);
  font-family: 'Inter', sans-serif;
}
.features-left {
  flex: 1.2;
  padding-right: 32px;
}
.features-left h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 18px;
  color: var(--accent-silver);
}
.features-list {
  list-style: none;
  padding: 0;
}
.features-list li {
  font-size: 1.08rem;
  margin-bottom: 14px;
  position: relative;
  padding-left: 32px;
}
.features-list li:before {
  content: '\2713';
  position: absolute;
  left: 0;
  top: 2px;
  color: var(--accent-silver);
  background: rgba(255,255,255,0.18);
  border-radius: 50%;
  padding: 2px 6px;
  font-size: 1.1rem;
}
.features-right {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}
.feature-img {
  width: 220px;
  height: 220px;
  object-fit: cover;
  border-radius: 16px;
  box-shadow: var(--shadow-xl);
  border: 4px solid var(--accent-brown);
}
.facts-section {
  margin: 48px auto 32px auto;
  max-width: 700px;
  text-align: center;
}
.facts-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary-brown);
  margin-bottom: 24px;
}
.facts-card {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  background: linear-gradient(90deg, var(--primary-brown) 60%, var(--accent-brown) 100%);
  color: var(--white);
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  padding: 18px 24px;
  margin-bottom: 18px;
  font-size: 1.08rem;
  font-family: 'Inter', sans-serif;
  position: relative;
}
.facts-card .fact-icon {
  font-size: 2rem;
  margin-right: 18px;
  opacity: 0.85;
}

@media (max-width: 900px) {
  .features-section.gradient-bg {
    flex-direction: column;
    padding: 18px 8px;
  }
  .features-left {
    padding-right: 0;
    margin-bottom: 18px;
  }
  .feature-img {
    width: 100%;
    height: 160px;
  }
}
@media (max-width: 700px) {
  .property-row {
    flex-direction: column;
    gap: 12px;
  }
  .center-row {
    flex-direction: column;
    gap: 12px;
    align-items: center;
  }
  .features-section.gradient-bg {
    padding: 12px 2px;
  }
  .facts-card {
    flex-direction: column;
    align-items: flex-start;
    padding: 12px 8px;
  }
}