:root {
    --primary-color: #00d084;
    --primary-hover: #00a86b;
    --text-color: #2c3e50;
    --text-light: #7f8c8d;
    --bg-color: #ffffff;
    --bg-light: #f8f9fa;
    --white: #ffffff;
    --border-color: #e9ecef;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 15px 40px rgba(0, 208, 132, 0.15);
    --transition: all 0.3s ease;
    --radius: 16px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

/* Header & Nav */
header {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

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

.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-color);
    text-decoration: none;
    display: flex;
    align-items: center;
}

.logo svg {
    margin-right: 10px;
}

.logo span {
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--primary-color);
}

.lang-switch {
    display: flex;
    gap: 10px;
}

.lang-switch a {
    text-decoration: none;
    color: var(--text-light);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
}

.lang-switch a.active {
    color: var(--primary-color);
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    background: var(--primary-color);
    color: var(--white);
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    text-align: center;
}

.hero h1 {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--text-color), #4a5568);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 20px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto 40px;
}

.hero-img {
    max-width: 800px;
    width: 100%;
    margin: 40px auto 0;
    display: block;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

/* Features */
.features {
    padding: 100px 0;
    background: var(--bg-light);
}

.section-title {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.feature-card {
    padding: 40px;
    background: var(--bg-light);
    border-radius: var(--radius);
    text-align: center;
    transition: var(--transition);
}

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

.feature-icon {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

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

/* Efficiency Section */
.efficiency {
    padding: 100px 0;
    background: var(--white);
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 18px;
    margin: -40px auto 60px;
    max-width: 700px;
}

.counters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    text-align: center;
}

.counter-card {
    background: var(--bg-light);
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.counter-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.circular-progress {
    position: relative;
    width: 150px;
    height: 150px;
    margin: 0 auto 30px;
}

.circular-progress svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.circular-progress circle {
    fill: none;
    stroke-width: 8;
    stroke-linecap: round;
}

.circular-progress circle.bg {
    stroke: var(--border-color);
}

.circular-progress circle.progress {
    stroke-dasharray: 251; /* 2 * PI * 40 */
    stroke-dashoffset: 251;
    transition: stroke-dashoffset 2s cubic-bezier(0.1, 0.5, 0.1, 1);
}

.counter-value {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 32px;
    font-weight: 800;
    color: var(--text-color);
    display: flex;
    align-items: baseline;
    justify-content: center;
}

.counter-value .small-text {
    font-size: 14px;
    color: var(--text-light);
    margin-left: 2px;
}

.counter-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--text-color);
}

.counter-card p {
    color: var(--text-light);
    font-size: 15px;
}

/* How It Works / FAQ */
.how-it-works {
    padding: 100px 0;
    background: var(--white);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-light);
    border-radius: var(--radius);
    margin-bottom: 20px;
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    box-shadow: var(--shadow-hover);
}

.faq-item summary {
    padding: 25px 30px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: '+';
    font-size: 24px;
    color: var(--primary-color);
    transition: var(--transition);
}

.faq-item[open] summary::after {
    content: '−';
    transform: rotate(180deg);
}

.faq-content {
    padding: 0 30px 25px;
    color: var(--text-light);
    line-height: 1.6;
}

/* Pricing */
.pricing {
    padding: 100px 0;
    background: var(--bg-light);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
}

.price-card {
    background: var(--white);
    padding: 50px 40px;
    border-radius: var(--radius);
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.price-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-color);
}

.price-card h3 {
    font-size: 28px;
    margin-bottom: 20px;
}

.price {
    font-size: 56px;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.price-card p {
    color: var(--text-light);
    margin-bottom: 30px;
    font-size: 16px;
}

/* Contact Form */
.contact {
    padding: 100px 0;
    background: var(--white);
}

.form-container {
    max-width: 600px;
    margin: 0 auto;
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 14px;
}

.form-control {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px;
    transition: var(--transition);
    background: var(--bg-light);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--white);
}

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

.form-status {
    margin-top: 20px;
    padding: 15px;
    border-radius: 8px;
    display: none;
    font-weight: 600;
}

.form-status.success {
    display: block;
    background: #d4edda;
    color: #155724;
}

.form-status.error {
    display: block;
    background: #f8d7da;
    color: #721c24;
}

/* Footer */
footer {
    background: var(--text-color);
    color: var(--white);
    text-align: center;
    padding: 40px 0;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-color);
    z-index: 1001;
}

/* Responsive */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-links {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: var(--bg-color);
        padding-top: 100px;
        align-items: center;
        gap: 40px;
        transition: var(--transition);
        z-index: 1000;
        box-shadow: -10px 0 30px rgba(0,0,0,0.1);
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .nav-links a {
        font-size: 24px;
    }
    
    .hero {
        padding: 120px 0 60px;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    .hero-img {
        width: 90%;
    }

    .features, .how-it-works, .pricing, .contact {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 28px;
        margin-bottom: 40px;
    }
    
    .feature-card {
        padding: 25px;
    }
    
    .faq-item summary {
        font-size: 16px;
        padding: 20px;
    }
    
    .price {
        font-size: 40px;
    }
    
    .price-card {
        padding: 30px 20px;
    }
}