/* Global Styles */
:root {
    --primary-color: #29aae2;
    --secondary-color: #2c3e50;
    --accent-color: #e74c3c;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --text-color: #333;
    --text-light: #666;
    --white: #ffffff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

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

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

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    transition: var(--transition);
    padding: 1rem 0;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-color) !important;
}

.navbar-brand i {
    font-size: 1.8rem;
}

.nav-link {
    font-weight: 500;
    color: var(--text-color) !important;
    margin: 0 0.5rem;
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 100%;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #29aae2 0%, #2c3e50 100%);
    /* Alternative professional gradients:
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%); - Dark professional
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%); - Blue professional
    background: linear-gradient(135deg, #1abc9c 0%, #16a085 100%); - Green professional
    background: linear-gradient(135deg, #34495e 0%, #2c3e50 100%); - Corporate blue
    */
    min-height: 50vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 100px 0 40px 0;
}

.hero-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="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.2;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 40px 0;
    width: 100%;
}

.hero-content .container {
    max-width: 1200px;
    margin: 50px auto 0;
}

.hero-content .row {
    align-items: center;
    justify-content: center;
}

.hero-content .col-lg-6:first-child {
    padding-right: 2rem;
    text-align: left;
}

.hero-content .col-lg-6:last-child {
    padding-left: 2rem;
    text-align: center;
}

.hero-slider {
    height: auto;
    min-height: inherit;
    margin: 0 auto;
}

.hero-slide {
    height: auto;
    min-height: inherit;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease 0.2s both;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    line-height: 1.5;
}

.hero-buttons {
    animation: fadeInUp 1s ease 0.4s both;
}

.hero-image {
    animation: fadeInRight 1s ease 0.6s both;
}

.hero-image img {
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
}

/* Section Dividers */
.section-divider {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 3rem;
}

.star {
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.star:nth-child(2) {
    animation-delay: 0.5s;
}

.star:nth-child(3) {
    animation-delay: 1s;
}

/* About Section */
.about-content h3 {
    color: var(--secondary-color);
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.about-content .lead {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

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

.feature-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--white);
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.feature-item i {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-item h5 {
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.feature-item p {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Partnership Section */
.partnership-section {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
    color: var(--white);
    position: relative;
}

.partnership-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="dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
    opacity: 0.3;
}

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

.brand-name {
    font-size: 4rem;
    font-weight: 700;
    margin: 1rem 0;
}

.brand-name .utl {
    color: var(--accent-color);
}

.brand-name .solar {
    color: var(--success-color);
}

.partnership-features {
    margin-top: 2rem;
}

.partnership-features .feature {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.partnership-features .feature i {
    margin-right: 1rem;
    font-size: 1.3rem;
}

/* Products Section */
.product-card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    margin-bottom: 2rem;
    position: relative;
}

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

.product-image {
    position: relative;
    overflow: hidden;
    height: 200px;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(41, 170, 226, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.product-card:hover .product-overlay {
    opacity: 1;
}

.product-overlay i {
    color: var(--white);
    font-size: 2rem;
}

.product-content {
    padding: 1.5rem;
}

.product-content h4 {
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.product-content p {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Contact Section */
.contact-info h3 {
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--white);
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.contact-item i {
    font-size: 1.5rem;
    margin-right: 1rem;
    margin-top: 0.25rem;
}

.contact-item h5 {
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: var(--text-light);
    margin-bottom: 0;
}

.contact-item a {
    color: var(--primary-color);
    text-decoration: none;
}

.contact-item a:hover {
    text-decoration: underline;
}

.contact-form {
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.contact-form h3 {
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
}

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

.form-control {
    border: 2px solid #e9ecef;
    border-radius: 8px;
    padding: 0.75rem 1rem;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(41, 170, 226, 0.25);
}

/* Footer */
.footer {
    background: var(--secondary-color);
    color: var(--white);
}

.footer h4, .footer h5 {
    color: var(--white);
    margin-bottom: 1.5rem;
}

.footer p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-contact p {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
}

.footer-contact i {
    margin-right: 0.5rem;
    color: var(--primary-color);
}

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

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--accent-color);
    color: var(--white);
    transform: translateY(-3px);
}

.footer-divider {
    border-color: rgba(255, 255, 255, 0.2);
    margin: 2rem 0;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    z-index: 1000;
}

.back-to-top:hover {
    background: var(--accent-color);
    transform: translateY(-3px);
}

/* Buttons */
.btn-primary {
    background: var(--primary-color);
    border-color: var(--primary-color);
    border-radius: 8px;
    padding: 0.75rem 2rem;
    font-weight: 500;
    transition: var(--transition);
}

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

.btn-outline-primary {
    border-color: var(--primary-color);
    color: var(--primary-color);
    border-radius: 8px;
    padding: 0.75rem 2rem;
    font-weight: 500;
    transition: var(--transition);
}

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

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.7;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section {
        min-height: 45vh;
        padding: 50px 0 30px 0;
    }
    
    .hero-content {
        padding: 30px 0;
    }
    
    .hero-content .col-lg-6:first-child {
        padding-right: 1rem;
        margin-bottom: 2rem;
        text-align: center;
    }
    
    .hero-content .col-lg-6:last-child {
        padding-left: 1rem;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .brand-name {
        font-size: 3rem;
    }
    
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 1rem;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
    }
    
    .contact-item i {
        margin-right: 0;
        margin-bottom: 1rem;
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 576px) {
    .hero-section {
        min-height: 40vh;
        padding: 40px 0 20px 0;
    }
    
    .hero-content {
        padding: 20px 0;
    }
    
    .hero-content .col-lg-6:first-child {
        padding-right: 0.5rem;
        margin-bottom: 1.5rem;
        text-align: center;
    }
    
    .hero-content .col-lg-6:last-child {
        padding-left: 0.5rem;
        text-align: center;
    }
    
    .hero-title {
        font-size: 1.6rem;
    }
    
    .hero-buttons .btn {
        display: block;
        width: 100%;
        margin-bottom: 1rem;
    }
    
    .hero-buttons .btn:last-child {
        margin-bottom: 0;
    }
    
    .partnership-features .feature {
        font-size: 1rem;
    }
}

/* Utility Classes */
.text-primary {
    color: var(--primary-color) !important;
}

.bg-primary {
    background-color: var(--primary-color) !important;
}

.shadow {
    box-shadow: var(--shadow) !important;
}

.rounded-lg {
    border-radius: 15px !important;
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--white);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}