:root {
    --primary-green: #2E8B57;
    --secondary-green: #228B22;
    --accent-orange: #FF6B35;
    --dark-green: #1B4332;
    --light-green: #E8F5E9;
    --text-dark: #2C3E50;
    --text-light: #7F8C8D;
    --white: #FFFFFF;
    --success-green: #27AE60;
    --warning-red: #E74C3C;
    --gradient-primary: linear-gradient(135deg, #2E8B57 0%, #228B22 100%);
    --gradient-accent: linear-gradient(135deg, #FF6B35 0%, #FF8A65 100%);
    --shadow-light: 0 2px 10px rgba(46, 139, 87, 0.1);
    --shadow-medium: 0 8px 30px rgba(46, 139, 87, 0.15);
    --shadow-heavy: 0 20px 60px rgba(46, 139, 87, 0.2);
}

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

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

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

/* Header Styles */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 102, 204, 0.1);
    transition: all 0.3s ease;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary-green);
    text-decoration: none;
}

.logo i {
    margin-right: 0.5rem;
    font-size: 2rem;
}

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

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.cta-button {
    background: var(--gradient-primary);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-light);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #2E8B57 0%, #228B22 70%, #1B4332 100%);
    color: white;
    padding: 140px 0 100px;
    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="grain" patternUnits="userSpaceOnUse" width="100" height="100"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="white" opacity="0.1"/><circle cx="20" cy="80" r="0.5" fill="white" opacity="0.1"/><circle cx="80" cy="20" r="0.5" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

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

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-highlight {
    color: var(--accent-orange);
}

.hero-text p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent-orange);
    display: block;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

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

.btn-primary {
    background: var(--gradient-accent);
    color: white;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-medium);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.hero-visual {
    position: relative;
    text-align: center;
}

.hero-device {
    max-width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: var(--shadow-heavy);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Floating Animation */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.floating {
    animation: float 6s ease-in-out infinite;
}

/* Problem Section */
.problem-section {
    padding: 100px 0;
    background: white;
}

.problem-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.section-badge {
    background: var(--light-green);
    color: var(--primary-green);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.section-description {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 3rem;
    line-height: 1.6;
}

.problem-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.problem-stat {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    border: 1px solid rgba(0, 102, 204, 0.1);
    transition: all 0.3s ease;
}

.problem-stat:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.problem-stat i {
    font-size: 3rem;
    color: var(--warning-red);
    margin-bottom: 1rem;
}

.problem-stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--warning-red);
    display: block;
    margin-bottom: 0.5rem;
}

.problem-stat-label {
    font-weight: 600;
    color: var(--text-dark);
}

/* Solution Section */
.solution-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

.solution-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.solution-image {
    position: relative;
}

.solution-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: var(--shadow-medium);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow-light);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 102, 204, 0.1);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    color: white;
    font-size: 1.5rem;
}

.feature-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.feature-description {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.5;
}

/* Quote Carousel Section */
.quotes-section {
    padding: 100px 0;
    background: var(--light-green);
}

.carousel-container {
    position: relative;
    margin: 3rem 0;
    overflow: hidden;
}

.carousel-track {
    display: flex;
    transition: transform 0.5s ease-in-out;
}

.quote-slide {
    min-width: 100%;
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: var(--shadow-medium);
    text-align: center;
    margin-right: 0;
}

.quote-slide i {
    font-size: 2rem;
    color: var(--accent-orange);
    margin-bottom: 1rem;
}

.quote-slide p {
    font-size: 1.2rem;
    font-style: italic;
    margin-bottom: 2rem;
    color: var(--text-dark);
    line-height: 1.6;
}

.quote-slide .author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.quote-slide .author .name {
    font-weight: 600;
    color: var(--text-dark);
}

.quote-slide .author .title {
    font-size: 0.9rem;
    color: var(--text-light);
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: var(--primary-green);
    color: white;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: var(--shadow-medium);
    transition: all 0.3s ease;
    z-index: 10;
}

.carousel-btn-prev {
    left: -60px;
}

.carousel-btn-next {
    right: -60px;
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 2rem;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(46, 139, 87, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background: var(--primary-green);
}

/* Technology Section */
.technology-section {
    padding: 100px 0;
    background: var(--dark-green);
    color: white;
    position: relative;
    overflow: hidden;
}

.technology-section::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="tech-pattern" patternUnits="userSpaceOnUse" width="50" height="50"><circle cx="25" cy="25" r="2" fill="white" opacity="0.05"/><circle cx="0" cy="0" r="1" fill="white" opacity="0.05"/><circle cx="50" cy="50" r="1" fill="white" opacity="0.05"/></pattern></defs><rect width="100" height="100" fill="url(%23tech-pattern)"/></svg>');
}

.technology-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.tech-specs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.tech-spec {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.tech-spec:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.tech-spec h3 {
    color: var(--accent-orange);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.tech-spec p {
    opacity: 0.9;
    line-height: 1.6;
}

/* ROI Section */
.roi-section {
    padding: 100px 0;
    background: white;
}

.roi-content {
    text-align: center;
    max-width: 1000px;
    margin: 0 auto;
}

.roi-calculator {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    padding: 3rem;
    border-radius: 25px;
    margin: 3rem 0;
    box-shadow: var(--shadow-medium);
    border: 1px solid rgba(46, 139, 87, 0.1);
}

.roi-comparison {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 2rem;
    align-items: center;
    margin: 2rem 0;
}

.cost-column {
    text-align: center;
    padding: 2rem;
    border-radius: 15px;
}

.without-tanksense {
    background: linear-gradient(135deg, #ffebee 0%, #fce4ec 100%);
    border: 2px solid var(--warning-red);
}

.with-tanksense {
    background: linear-gradient(135deg, #e8f5e8 0%, #f1f8e9 100%);
    border: 2px solid var(--success-green);
}

.vs-divider {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-green);
}

.cost-amount {
    font-size: 2.5rem;
    font-weight: 800;
    margin: 1rem 0;
}

.without-tanksense .cost-amount {
    color: var(--warning-red);
}

.with-tanksense .cost-amount {
    color: var(--success-green);
}

.savings-highlight {
    background: var(--gradient-accent);
    color: white;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-size: 1.2rem;
    font-weight: 700;
    margin: 2rem auto;
    display: inline-block;
}

/* CTA Section */
.cta-section {
    padding: 100px 0;
    background: var(--gradient-primary);
    color: white;
    text-align: center;
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.cta-section h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-white {
    background: white;
    color: var(--primary-green);
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-medium);
}

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

/* Footer */
.footer {
    background: var(--dark-green);
    color: white;
    padding: 50px 0 30px;
}

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

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--accent-orange);
}

.footer-brand p {
    opacity: 0.8;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.footer-column h4 {
    margin-bottom: 1rem;
    color: var(--accent-orange);
}

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

.footer-column a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: var(--accent-orange);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
    opacity: 0.6;
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav-menu {
        display: none;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .solution-content {
        grid-template-columns: 1fr;
    }
    
    .roi-comparison {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .vs-divider {
        order: 2;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    /* Carousel responsive styles */
    .carousel-btn-prev {
        left: 10px;
    }
    
    .carousel-btn-next {
        right: 10px;
    }
    
    .carousel-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .quote-slide {
        padding: 2rem 1.5rem;
    }
    
    .quote-slide p {
        font-size: 1.1rem;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Loading Animation */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.loading {
    animation: pulse 2s ease-in-out infinite;
}