/* Global Styles & Variables */
:root {
    --primary: #2d5a27;
    --primary-dark: #1b3818;
    --primary-light: #43823b;
    --accent-yellow: #d4a017;
    --bg-dark: #0f2214;
    --text-dark: #1f2937;
    --text-muted: #4b5563;
    --text-light: #f3f4f6;
    --bg-light: #f8faf8;
    --white: #ffffff;
    --border-color: #e5e7eb;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
    background-color: var(--white);
    color: var(--text-dark);
    line-height: 1.6;
}

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

/* Header & Navigation */
.header {
    background-color: var(--white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.04);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
    color: var(--text-dark);
}

.logo-img {
    height: 58px;
    width: auto;
    object-fit: contain;
}

.brand-text {
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    line-height: 1.1;
    color: #1a3322;
}

.brand-text small {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-light);
    letter-spacing: 2px;
}

.nav-menu {
    display: flex;
    gap: 28px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
    padding: 6px 0;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-dark);
    border-radius: 2px;
}

/* Hero Section */
.hero {
    position: relative;
    background: linear-gradient(135deg, #091910 0%, #15321f 50%, #0d2315 100%);
    color: var(--white);
    padding: 100px 0 120px;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 80% 20%, rgba(67, 130, 59, 0.25) 0%, transparent 60%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 850px;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: rgba(67, 130, 59, 0.25);
    border: 1px solid rgba(110, 196, 99, 0.4);
    padding: 8px 18px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    color: #7ce76d;
    margin-bottom: 24px;
    letter-spacing: 0.5px;
}

.hero-title {
    font-size: 2.85rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

.highlight-green {
    color: #55d676;
}

.highlight-yellow {
    color: #ffd043;
}

.hero-desc {
    font-size: 1.15rem;
    line-height: 1.7;
    color: #d1d5db;
    margin-bottom: 35px;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: #3bb56e;
    color: #0d2814;
}

.btn-primary:hover {
    background-color: #4ed384;
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(59, 181, 110, 0.35);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.25);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.18);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

/* Sections Global */
.section {
    padding: 80px 0;
}

.bg-light {
    background-color: var(--bg-light);
}

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

.section-header {
    margin-bottom: 50px;
}

.section-subtitle {
    font-size: 0.85rem;
    font-weight: 800;
    letter-spacing: 1.5px;
    color: var(--primary);
    text-transform: uppercase;
    display: block;
    margin-bottom: 8px;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    color: #111827;
}

.title-underline {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent-yellow));
    margin: 14px auto 20px;
    border-radius: 2px;
}

.section-lead {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto;
}

/* Grids & Cards */
.grid {
    display: grid;
    gap: 28px;
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.card {
    background: var(--white);
    padding: 32px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 15px rgba(0,0,0,0.03);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.08);
    border-color: #cbd5e1;
}

.card-icon, .esg-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.feature-card h3, .project-card h3, .op-card h3, .esg-card h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
    color: #111827;
}

.values-list {
    list-style: none;
    padding: 0;
}

.values-list li {
    margin-bottom: 10px;
    padding-left: 18px;
    position: relative;
}

.values-list li::before {
    content: '✔';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-size: 0.85rem;
}

/* Projects */
.project-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.project-region {
    font-size: 0.8rem;
    font-weight: 800;
    color: var(--accent-yellow);
    letter-spacing: 1px;
}

.project-tags {
    margin-top: 20px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tag {
    background-color: #eaf5eb;
    color: var(--primary);
    font-size: 0.8rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 20px;
}

/* Operations */
.op-card {
    position: relative;
}

.op-num {
    font-size: 2.5rem;
    font-weight: 800;
    color: #e5e7eb;
    line-height: 1;
    margin-bottom: 12px;
}

/* Contact */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

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

.contact-info h3 {
    font-size: 1.6rem;
    margin-bottom: 12px;
}

.contact-desc {
    color: var(--text-muted);
    margin-bottom: 28px;
}

.info-item {
    display: flex;
    gap: 14px;
    margin-bottom: 20px;
    align-items: flex-start;
}

.info-item .icon {
    font-size: 1.4rem;
}

.contact-form-box {
    background: var(--white);
    padding: 32px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

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

.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 6px;
    color: var(--text-dark);
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(45, 90, 39, 0.15);
}

/* Footer */
.footer {
    background-color: #0c180e;
    color: #9ca3af;
    padding: 40px 0;
    border-top: 1px solid #1a3320;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-logo {
    height: 40px;
    width: auto;
}

.footer-brand p {
    font-weight: 700;
    color: var(--white);
    font-size: 0.95rem;
}

/* Responsive */
@media (max-width: 900px) {
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    .hero-title {
        font-size: 2.2rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    .nav-toggle {
        display: flex;
    }
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}