:root {
    --forest-green: #1B2E1E;
    --forest-light: #2A422D;
    --deep-walnut: #3D261C;
    --warm-cream: #FDF9F3;
    --light-cream: #F4EFE6;
    --amber: #D48C46;
    --soft-charcoal: #2C2C2C;
    --text-body: #4A4E4B;
    --white: #FFFFFF;
    --border-color: #E2D9CC;
    --radius: 10px;
    --transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    --container-width: 1240px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-body);
    background-color: var(--warm-cream);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, .logo {
    font-family: 'Playfair Display', serif;
    color: var(--forest-green);
    line-height: 1.25;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 3.5rem;
}

.section-badge, .hero-badge {
    display: inline-block;
    padding: 0.4rem 1.1rem;
    border-radius: 30px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    background: rgba(212, 140, 70, 0.15);
    color: var(--amber);
    border: 1px solid rgba(212, 140, 70, 0.3);
    margin-bottom: 1rem;
}

.section-badge.light {
    background: rgba(255, 255, 255, 0.15);
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.3);
}

.section-title {
    font-size: clamp(2.2rem, 4vw, 3.2rem);
    margin-bottom: 0.8rem;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-body);
}

/* Portfolio Back Link Pill */
.portfolio-back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    border-radius: 30px;
    background: rgba(212, 140, 70, 0.12);
    border: 1px solid rgba(212, 140, 70, 0.35);
    color: var(--amber) !important;
    font-weight: 600 !important;
    font-size: 0.85rem !important;
    transition: var(--transition);
}

.portfolio-back-link:hover {
    background: var(--amber);
    color: white !important;
    transform: translateX(-3px);
}

/* Header */
#main-header {
    height: 85px;
    display: flex;
    align-items: center;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition);
    background: transparent;
}

#main-header.scrolled {
    background-color: rgba(253, 249, 243, 0.95);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    height: 72px;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo a {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--white);
    text-decoration: none;
}

#main-header.scrolled .logo a {
    color: var(--forest-green);
}

.desktop-nav {
    display: flex;
    align-items: center;
    gap: 24px;
}

.desktop-nav a {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    font-size: 0.92rem;
    transition: var(--transition);
}

#main-header.scrolled .desktop-nav a {
    color: var(--soft-charcoal);
}

.desktop-nav a:hover {
    color: var(--amber) !important;
}

.btn {
    padding: 12px 26px;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.92rem;
}

.btn-primary {
    background-color: var(--forest-green);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--deep-walnut);
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(0,0,0,0.15);
}

.btn-outline {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.4);
    color: var(--white);
}

.btn-outline:hover {
    border-color: var(--white);
    background: rgba(255,255,255,0.1);
}

.btn-full {
    width: 100%;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--white);
    cursor: pointer;
}

#main-header.scrolled .mobile-menu-toggle {
    color: var(--forest-green);
}

/* Mobile Nav Drawer Overlay */
.mobile-nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(27, 46, 30, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 2000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.mobile-nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav-content {
    text-align: center;
    width: 90%;
    max-width: 400px;
    position: relative;
    padding: 3rem 1.5rem;
}

.mobile-menu-close {
    position: absolute;
    top: 10px;
    right: 15px;
    background: transparent;
    border: none;
    color: white;
    font-size: 2.5rem;
    cursor: pointer;
    line-height: 1;
}

.mobile-nav-links {
    list-style: none;
    margin-top: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.mobile-nav-links a {
    font-family: 'Playfair Display', serif;
    font-size: 1.4rem;
    color: white;
    text-decoration: none;
}

/* Hero Section */
.hero {
    min-height: 92vh;
    background-image: url('https://images.unsplash.com/photo-1516455590571-18256e5bb9ff?q=80&w=1600&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    position: relative;
    color: var(--white);
    padding: 140px 0 80px;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(27, 46, 30, 0.88) 0%, rgba(61, 38, 28, 0.8) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero h1 {
    color: var(--white);
    font-size: clamp(3rem, 6vw, 4.8rem);
    margin-bottom: 20px;
    letter-spacing: -1px;
}

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

.hero p {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    max-width: 650px;
    margin-bottom: 35px;
    opacity: 0.9;
}

.hero-cta {
    display: flex;
    gap: 1.2rem;
    flex-wrap: wrap;
}

/* Products Section */
.products {
    padding: 100px 0;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 25px;
}

.product-card {
    height: 420px;
    background-size: cover;
    background-position: center;
    border-radius: var(--radius);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.25);
}

.card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 30px;
    background: linear-gradient(0deg, rgba(27, 46, 30, 0.95) 0%, rgba(27, 46, 30, 0) 100%);
    color: var(--white);
}

.card-tag {
    display: inline-block;
    padding: 0.2rem 0.7rem;
    border-radius: 4px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    background: var(--amber);
    color: var(--white);
    margin-bottom: 0.6rem;
}

.card-overlay h3 {
    color: var(--white);
    font-size: 1.45rem;
    margin-bottom: 6px;
}

.card-overlay p {
    font-size: 0.92rem;
    opacity: 0.85;
}

/* Calculator Section */
.calculator-section {
    padding: 90px 0;
    background-color: var(--forest-green);
    color: var(--white);
}

.calc-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 50px;
    align-items: center;
}

.calc-info h2 {
    color: var(--white);
    font-size: clamp(2.2rem, 4vw, 3rem);
    margin-bottom: 1.2rem;
}

.calc-info p {
    opacity: 0.9;
    font-size: 1.05rem;
}

.calc-features {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-weight: 500;
}

.feature-item i {
    color: var(--amber);
}

.calc-form {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(10px);
    padding: 2.5rem;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.input-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.82rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.input-group input {
    width: 100%;
    padding: 12px 14px;
    border-radius: var(--radius);
    border: 1px solid rgba(255,255,255,0.25);
    background: rgba(0,0,0,0.2);
    color: var(--white);
    font-size: 0.98rem;
    font-family: inherit;
    transition: var(--transition);
}

.input-group input:focus {
    outline: none;
    border-color: var(--amber);
    background: rgba(0,0,0,0.35);
}

.calc-results-card {
    margin-top: 1rem;
    background: rgba(0,0,0,0.3);
    border: 1px solid rgba(212, 140, 70, 0.3);
    padding: 1.5rem;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: space-around;
}

.result-stat span {
    display: block;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.8;
}

.result-stat strong {
    font-size: 2rem;
    font-family: 'Playfair Display', serif;
    color: var(--amber);
}

.result-divider {
    width: 1px;
    height: 40px;
    background: rgba(255,255,255,0.15);
}

/* Species Technical Section */
.species-detail {
    padding: 100px 0;
}

.species-list {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    max-width: 900px;
    margin: 0 auto;
}

.species-item {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
}

.species-header {
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    user-select: none;
}

.species-header h3 {
    font-size: 1.35rem;
    display: inline-block;
    margin-right: 0.8rem;
}

.species-header h3 em {
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
    font-weight: 400;
    color: var(--text-body);
}

.species-type-badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.species-type-badge.hardwood {
    background: #EEDCC9;
    color: var(--deep-walnut);
}

.species-type-badge.softwood {
    background: #D8E6D9;
    color: var(--forest-green);
}

.accordion-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--warm-cream);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--forest-green);
    transition: var(--transition);
}

.species-content {
    padding: 0 2rem 1.8rem;
    display: none;
    animation: fadeIn 0.3s ease;
}

.species-item.active .species-content {
    display: block;
}

.species-item.active {
    border-color: var(--amber);
    box-shadow: 0 8px 25px rgba(0,0,0,0.06);
}

.species-stats-grid {
    margin-top: 1.2rem;
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.stat-box {
    background: var(--light-cream);
    padding: 0.6rem 1rem;
    border-radius: 6px;
    font-size: 0.88rem;
}

.stat-box i {
    color: var(--amber);
    margin-right: 0.4rem;
}

/* Sustainability */
.sustainability {
    padding: 100px 0;
    background-image: url('https://images.unsplash.com/photo-1448375240586-882707db888b?q=80&w=1600&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    position: relative;
    color: var(--white);
    text-align: center;
}

.sustainability::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(27, 46, 30, 0.9);
}

.sustain-content {
    position: relative;
    z-index: 1;
    max-width: 750px;
    margin: 0 auto;
}

.sustain-content h2 {
    color: var(--white);
    font-size: clamp(2.2rem, 4vw, 3.2rem);
    margin-bottom: 1.2rem;
}

.sustain-content p {
    font-size: 1.15rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}

.fsc-badge {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 30px;
    background: var(--amber);
    color: var(--white);
    font-weight: 800;
    letter-spacing: 1.5px;
}

/* Trade Quote Section */
.quote-section {
    padding: 100px 0;
}

.quote-card {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 4rem 3rem;
    max-width: 850px;
    margin: 0 auto;
    box-shadow: 0 10px 30px rgba(0,0,0,0.04);
}

.quote-form {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    margin-top: 2rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--forest-green);
    margin-bottom: 0.4rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--amber);
    box-shadow: 0 0 10px rgba(212, 140, 70, 0.2);
}

.form-feedback {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 8px;
    background: rgba(27, 46, 30, 0.1);
    color: var(--forest-green);
    text-align: center;
    font-weight: 600;
}

/* Footer */
footer {
    background: var(--forest-green);
    color: var(--white);
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-col .logo {
    color: var(--white);
    margin-bottom: 1rem;
}

.footer-col p {
    opacity: 0.8;
    font-size: 0.92rem;
}

.footer-col h4 {
    color: var(--amber);
    margin-bottom: 1.2rem;
    font-size: 1.05rem;
    font-family: 'Inter', sans-serif;
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
}

.footer-col a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--amber);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    text-align: center;
    opacity: 0.7;
    font-size: 0.9rem;
}

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

/* Responsive */
@media (max-width: 1024px) {
    .calc-grid {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .desktop-nav, .header-cta {
        display: none;
    }
    .mobile-menu-toggle {
        display: block;
    }
    .input-row, .form-row {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
}