:root {
    --primary-color: #f1c40f; /* Yellowish for electricity */
    --secondary-color: #2c3e50; /* Dark blue/grey */
    --text-color: #333;
    --light-bg: #f9f9f9;
    --white: #ffffff;
}

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

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-bg);
}

h1, h2, h3 {
    font-family: 'Montserrat', sans-serif;
    color: var(--secondary-color);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

/* Header */
header {
    background-color: var(--white);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    display: flex;
    align-items: center;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--secondary-color);
}

.logo img {
    height: 60px;
    margin-right: 12px;
}

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

.nav-links li a {
    font-weight: 500;
    transition: color 0.3s;
    color: var(--secondary-color);
}

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

.burger {
    display: none;
    cursor: pointer;
}

.burger div {
    width: 25px;
    height: 3px;
    background-color: var(--secondary-color);
    margin: 5px;
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    height: 80vh;
    background-image: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('logo/Logo_Enera_White_RED.png');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--white);
    position: relative;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    color: var(--white);
}

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

.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--primary-color);
    color: var(--secondary-color);
    border-radius: 5px;
    font-weight: 600;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #d4ac0d;
}

/* Services Section */
.services {
    padding: 80px 0;
    background-color: var(--white);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--primary-color);
    margin: 10px auto 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--light-bg);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.service-card:hover {
    transform: translateY(-5px);
}

.service-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.service-card h3 {
    margin-bottom: 15px;
}

/* Gallery Section */
.gallery {
    padding: 80px 0;
    background-color: var(--light-bg);
}

.carousel-container {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    overflow: hidden;
    border-radius: 10px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.carousel-slide {
    display: flex;
    transition: transform 0.4s ease-in-out;
}

.carousel-slide img {
    width: 100%;
    height: 500px; /* Fixed height for consistency */
    object-fit: contain; /* Contain to show full image without cropping, or cover to fill */
    background-color: #000; /* Dark background for portrait images */
    flex-shrink: 0;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(0,0,0,0.5);
    color: var(--white);
    border: none;
    padding: 15px;
    cursor: pointer;
    font-size: 1.2rem;
    transition: background-color 0.3s;
    z-index: 10;
}

.carousel-btn:hover {
    background-color: var(--primary-color);
}

.prev-btn {
    left: 10px;
}

.next-btn {
    right: 10px;
}

/* Contact Section */
.contact {
    padding: 80px 0;
    background-color: var(--secondary-color);
    color: var(--white);
}

.contact .section-title {
    color: var(--white);
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
    text-align: center;
}

.contact-item {
    background: rgba(255,255,255,0.1);
    padding: 30px;
    border-radius: 10px;
    min-width: 250px;
}

.contact-item i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.contact-item a {
    font-size: 1.2rem;
    transition: color 0.3s;
}

.contact-item a:hover {
    color: var(--primary-color);
}

/* Footer */
footer {
    background-color: #1a252f;
    color: #bdc3c7;
    text-align: center;
    padding: 20px 0;
}

/* Mobile Responsive */
@media screen and (max-width: 768px) {
    .nav-links {
        position: absolute;
        right: 0px;
        height: 92vh;
        top: 80px;
        background-color: var(--white);
        display: flex;
        flex-direction: column;
        align-items: center;
        width: 50%;
        transform: translateX(100%);
        transition: transform 0.5s ease-in;
        box-shadow: -2px 0 5px rgba(0,0,0,0.1);
    }

    .nav-links li {
        opacity: 0;
    }

    .burger {
        display: block;
    }

    .nav-active {
        transform: translateX(0%);
    }

    @keyframes navLinkFade {
        from {
            opacity: 0;
            transform: translateX(50px);
        }
        to {
            opacity: 1;
            transform: translateX(0);
        }
    }

    .toggle .line1 {
        transform: rotate(-45deg) translate(-5px, 6px);
    }

    .toggle .line2 {
        opacity: 0;
    }

    .toggle .line3 {
        transform: rotate(45deg) translate(-5px, -6px);
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero {
        background-size: contain;
        background-repeat: no-repeat;
    }

    .carousel-slide img {
        height: 350px;
    }
}

/* Small Mobile Responsive */
@media screen and (max-width: 480px) {
    .nav-links {
        width: 80%;
    }

    .hero-content h1 {
        font-size: 1.8rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .carousel-slide img {
        height: 250px;
    }

    .contact-info {
        gap: 20px;
    }

    .contact-item {
        min-width: 0;
        width: 100%;
        padding: 20px;
    }
}