/* OilCentra - Unique Design System */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600;700&display=swap');

:root {
    --primary-green: #2d7a4f;
    --primary-green-dark: #1f5437;
    --primary-green-light: #3a9463;
    --accent-gold: #c9a961;
    --dark-navy: #0f1c2e;
    --text-dark: #1a1a1a;
    --text-light: #6b7280;
    --bg-light: #f8f9fa;
    --white: #ffffff;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(0, 0, 0, 0.15);
}

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

body {
    font-family: 'Poppins', sans-serif;
    font-weight: 400;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
    background: var(--white);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    max-width: 700px;
    margin-bottom: 1rem;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header - Unique Asymmetric Design */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--white);
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid #e5e7eb;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary-green);
    position: relative;
}

.logo::before {
    content: '';
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--accent-gold) 100%);
    clip-path: polygon(30% 0%, 70% 0%, 100% 30%, 100% 70%, 70% 100%, 30% 100%, 0% 70%, 0% 30%);
    animation: logoRotate 8s linear infinite;
}

@keyframes logoRotate {
    0%, 100% { transform: rotate(0deg); }
    50% { transform: rotate(180deg); }
}

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

.nav-toggle span {
    width: 28px;
    height: 3px;
    background: var(--text-dark);
    transition: all 0.3s ease;
    border-radius: 3px;
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.main-nav a {
    color: var(--text-dark);
    font-weight: 400;
    position: relative;
    padding: 0.5rem 0;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gold);
    transition: width 0.3s ease;
}

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

/* Hero Section - Diagonal Design */
.hero-section {
    margin-top: 80px;
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(248, 249, 250, 0.9) 100%);
    z-index: 2;
}

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

.hero-content {
    position: relative;
    z-index: 3;
    color: var(--white);
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-diagonal {
    background: var(--white);
    padding: 3rem;
    border-radius: 12px;
    max-width: 700px;
    border-left: 5px solid var(--primary-green);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.hero-diagonal h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
    line-height: 1.2;
}

.hero-diagonal p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    font-weight: 300;
    color: var(--text-light);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    padding: 0.9rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: var(--primary-green);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(45, 122, 79, 0.4);
}

.btn-primary:hover {
    background: var(--primary-green-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(45, 122, 79, 0.6);
}

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

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

/* Section Styles */
.section {
    padding: 5rem 0;
}

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

.section-dark {
    background: var(--white);
    color: var(--text-dark);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-green) 0%, var(--accent-gold) 100%);
    border-radius: 2px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 1.5rem auto 0;
}

/* Features Grid - Unique Staggered Layout */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: 12px;
    box-shadow: 0 10px 30px var(--shadow);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-green) 0%, var(--accent-gold) 100%);
    transition: left 0.4s ease;
}

.feature-card:hover::before {
    left: 0;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px var(--shadow-hover);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-green-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 2rem;
    color: var(--white);
    box-shadow: 0 8px 20px rgba(45, 122, 79, 0.3);
}

.feature-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--dark-navy);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* Statistics Section - Unique Circular Design */
.stats-section {
    background: var(--bg-light);
    color: var(--text-dark);
    padding: 5rem 0;
    position: relative;
    overflow: hidden;
}

.stats-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(45, 122, 79, 0.03) 0%, transparent 70%);
    border-radius: 50%;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    position: relative;
    z-index: 2;
}

.stat-item {
    text-align: center;
    position: relative;
}

.stat-circle {
    width: 180px;
    height: 180px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--accent-gold) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.stat-circle::before {
    content: '';
    position: absolute;
    inset: 8px;
    background: var(--white);
    border-radius: 50%;
    z-index: 1;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    position: relative;
    z-index: 2;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--accent-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 1.2rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Content Section with Image */
.content-with-image {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

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

.content-text p {
    margin-bottom: 1.5rem;
    color: var(--text-light);
}

.content-image {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 60px var(--shadow);
}

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

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.service-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px var(--shadow);
    transition: all 0.4s ease;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 45px var(--shadow-hover);
}

.service-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
    position: relative;
}

.service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.service-card:hover .service-image img {
    transform: scale(1.1);
}

.service-content {
    padding: 2rem;
}

.service-content h3 {
    color: var(--dark-navy);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.service-content p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

/* Blog Grid */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.blog-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px var(--shadow);
    transition: all 0.4s ease;
}

.blog-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 45px var(--shadow-hover);
}

.blog-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.blog-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.blog-card:hover .blog-image img {
    transform: scale(1.1);
}

.blog-content {
    padding: 2rem;
}

.blog-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--text-light);
}

.blog-content h3 {
    color: var(--dark-navy);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.blog-content p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

/* Blog Article */
.article-header {
    text-align: center;
    padding: 3rem 0;
    background: var(--white);
    margin-top: 80px;
    border-bottom: 1px solid #e5e7eb;
}

.article-header h1 {
    max-width: 800px;
    margin: 0 auto 1rem;
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 2rem;
    color: var(--text-light);
    flex-wrap: wrap;
}

.article-featured-image {
    width: 100%;
    height: 500px;
    overflow: hidden;
    margin-bottom: 3rem;
}

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

.article-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px 5rem;
}

.article-content h2 {
    margin-top: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--dark-navy);
}

.article-content p {
    max-width: 100%;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.article-content ul, .article-content ol {
    margin-bottom: 1.5rem;
    padding-left: 2rem;
}

.article-content li {
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

/* Contact Form */
.contact-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info h3 {
    margin-bottom: 2rem;
    color: var(--dark-navy);
}

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

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-green);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.3rem;
    flex-shrink: 0;
}

.contact-details h4 {
    margin-bottom: 0.5rem;
    color: var(--dark-navy);
}

.contact-details p {
    color: var(--text-light);
}

.contact-form {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 30px var(--shadow);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark-navy);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.9rem;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-green);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

/* Contact map styles removed - map feature disabled */

/* CTA Section */
.cta-section {
    background: var(--bg-light);
    color: var(--text-dark);
    text-align: center;
    padding: 5rem 0;
    position: relative;
    overflow: hidden;
    border-top: 1px solid #e5e7eb;
    border-bottom: 1px solid #e5e7eb;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(45, 122, 79, 0.05) 0%, transparent 70%);
    animation: ctaPulse 15s linear infinite;
}

@keyframes ctaPulse {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.cta-content {
    position: relative;
    z-index: 2;
}

.cta-content h2 {
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.cta-content p {
    font-size: 1.2rem;
    margin: 0 auto 2rem;
    max-width: 700px;
    color: var(--text-light);
}

/* Footer */
.site-footer {
    background: var(--bg-light);
    color: var(--text-dark);
    padding: 4rem 0 2rem;
    border-top: 1px solid #e5e7eb;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3 {
    margin-bottom: 1.5rem;
    color: var(--primary-green);
}

.footer-section p,
.footer-section a {
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.footer-section a:hover {
    color: var(--primary-green);
}

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

.footer-links li {
    margin-bottom: 0.8rem;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-icon {
    width: 40px;
    height: 40px;
    background: var(--white);
    border: 1px solid #e5e7eb;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    color: var(--text-dark);
}

.social-icon:hover {
    background: var(--primary-green);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #e5e7eb;
    color: var(--text-light);
}

/* Cookie Consent */
.cookie-consent {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--white);
    color: var(--text-dark);
    padding: 1.5rem;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
    border-top: 1px solid #e5e7eb;
    z-index: 9999;
    display: none;
}

.cookie-consent.show {
    display: block;
}

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    flex-wrap: wrap;
}

.cookie-text p {
    margin: 0;
}

.cookie-text a {
    color: var(--primary-green);
    text-decoration: underline;
}

.cookie-buttons {
    display: flex;
    gap: 1rem;
}

/* Legal Pages */
.legal-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 5rem 20px;
}

.page-header {
    text-align: center;
    padding: 3rem 0;
    background: var(--white);
    margin-top: 80px;
    margin-bottom: 3rem;
    border-bottom: 1px solid #e5e7eb;
}

.page-header h1 {
    max-width: 800px;
    margin: 0 auto;
}

.legal-content h1 {
    margin-bottom: 2rem;
}

.legal-content h2 {
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    color: var(--dark-navy);
}

.legal-content p {
    max-width: 100%;
    margin-bottom: 1.5rem;
}

.legal-content ul, .legal-content ol {
    margin-bottom: 1.5rem;
    padding-left: 2rem;
}

.legal-content li {
    margin-bottom: 0.8rem;
}

/* FAQ */
.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    margin-bottom: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 5px 20px var(--shadow);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    text-align: left;
    padding: 1.5rem 2rem;
    background: transparent;
    border: none;
    font-family: 'Poppins', sans-serif;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--dark-navy);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s ease;
}

.faq-question:hover {
    background: var(--bg-light);
}

.faq-icon {
    font-size: 1.5rem;
    color: var(--primary-green);
    transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 2rem 1.5rem;
}

.faq-answer p {
    color: var(--text-light);
    max-width: 100%;
}

/* Responsive Design */
@media (max-width: 992px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.6rem; }
    
    .content-with-image,
    .contact-section {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .stats-grid,
    .services-grid,
    .blog-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .main-nav {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        background: var(--white);
        transition: left 0.3s ease;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        border-top: 1px solid #e5e7eb;
    }
    
    .main-nav.active {
        left: 0;
    }
    
    .main-nav ul {
        flex-direction: column;
        padding: 2rem;
        gap: 0;
    }
    
    .main-nav li {
        width: 100%;
        border-bottom: 1px solid #e5e7eb;
    }
    
    .main-nav a {
        display: block;
        padding: 1rem 0;
    }
    
    .hero-diagonal h1 {
        font-size: 2.2rem;
    }
    
    .hero-diagonal {
        padding: 2rem;
    }
    
    .features-grid,
    .services-grid,
    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cookie-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }

    .article-featured-image {
        height: 300px;
    }
}

@media (max-width: 480px) {
    .hero-diagonal h1 {
        font-size: 1.8rem;
    }
    
    .hero-diagonal p {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-circle {
        width: 150px;
        height: 150px;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
}