:root {
    /* Base Colors */
    --primary-color: #007BFF;
    --primary-dark: #0056b3;
    --accent-color: #FF6600;
    --accent-dark: #cc5200;

    /* Semantic Colors - Light Mode (Default) */
    --body-bg: #ffffff;
    --card-bg: #ffffff;
    --nav-bg: rgba(255, 255, 255, 0.95);
    --text-main: #333333;
    --text-muted: #666666;
    --section-bg-alt: #f9f9f9;
    --border-color: #eeeeee;

    /* Other */
    --white: #ffffff;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --font-main: 'Outfit', sans-serif;
}

.dark-mode {
    /* Semantic Colors - Dark Mode */
    --body-bg: #000000;
    /* Matching logo background as requested */
    --card-bg: #1e1e1e;
    --nav-bg: rgba(0, 0, 0, 0.95);
    --text-main: #f1f1f1;
    --text-muted: #b0b0b0;
    --section-bg-alt: #111111;
    --border-color: #333333;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    line-height: 1.6;
    color: var(--text-main);
    background-color: var(--body-bg);
    transition: background-color 0.3s ease, color 0.3s ease;
}

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

.text-primary {
    color: var(--primary-color);
}

.text-accent {
    color: var(--accent-color);
}

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

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

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

.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.underline {
    width: 80px;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
    margin: 0 auto;
    border-radius: 2px;
}

/* Buttons */
.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 123, 255, 0.4);
}

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

/* Navbar */
.navbar {
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    padding: 15px 0;
    transition: background-color 0.3s ease;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 50px;
    width: auto;
}

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 500;
    transition: var(--transition);
    font-size: 1.5rem;
}

/* Hero Section */
.hero {
    height: 100vh;
    background-image: url('https://images.unsplash.com/photo-1509391366360-2e959784a276?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    /* High quality solar panel image */
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--white);
    margin-top: 0;
    /* Reset if needed */
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.4));
}

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

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.hero-btns {
    display: flex;
    gap: 20px;
    justify-content: center;
}

/* About Section */
.about-content {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.about-text {
    max-width: 800px;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 1.1rem;
    color: var(--text-muted);
}

/* Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--card-bg);
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
    border-bottom: 4px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    border-bottom-color: var(--accent-color);
}

.icon-box {
    width: 70px;
    height: 70px;
    background: rgba(0, 123, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--primary-color);
    font-size: 1.8rem;
    transition: var(--transition);
}

.service-card:hover .icon-box {
    background: var(--primary-color);
    color: var(--white);
}

.service-card h3 {
    margin-bottom: 15px;
    font-size: 1.4rem;
}

.service-card p {
    color: var(--text-muted);
}

/* Brands Section */
.brands-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 40px;
    margin-top: 40px;
}

.brand-item {
    background: var(--card-bg);
    padding: 20px 40px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 200px;
}

.brand-item h3 {
    color: var(--text-main);
    font-weight: 600;
}

/* Features/Why Choose Us */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    text-align: center;
    margin-top: 40px;
}

.feature i {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.feature h4 {
    font-size: 1.2rem;
}

/* Contact Section */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 50px;
    background: var(--card-bg);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    padding: 50px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

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

.info-item i {
    width: 50px;
    height: 50px;
    background: rgba(255, 102, 0, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-color);
    font-size: 1.2rem;
    flex-shrink: 0;
}

.info-item h4 {
    margin-bottom: 5px;
    font-size: 1.1rem;
}

.info-item p {
    color: var(--text-muted);
}

.contact-form .form-group {
    margin-bottom: 20px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid var(--border-color);
    background: var(--body-bg);
    color: var(--text-main);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.contact-form button {
    width: 100%;
}

/* Footer */
footer {
    background: #111;
    color: #888;
    text-align: center;
    padding: 30px 0;
    border-top: 1px solid #222;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--nav-bg);
        flex-direction: column;
        padding: 20px 0;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
        display: none;
    }

    .navbar .nav-links.active {
        display: flex;
    }

    .hamburger {
        display: block;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .contact-container {
        grid-template-columns: 1fr;
        padding: 30px;
    }

    .hero-btns {
        flex-direction: column;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        text-align: center;
    }
}