/* NordWind Energy - Main Stylesheet */

/* CSS Custom Properties */
:root {
    --primary-black: #0a0a0a;
    --secondary-black: #1a1a1a;
    --accent-blue: #00d4ff;
    --accent-blue-dark: #0099ff;
    --accent-green: #00ff88;
    --accent-green-dark: #00cc66;
    --text-white: #ffffff;
    --text-gray: #cccccc;
    --text-light-gray: #999999;
    --gradient-primary: linear-gradient(135deg, var(--accent-blue), var(--accent-green));
    --gradient-secondary: linear-gradient(45deg, var(--accent-blue-dark), var(--accent-green-dark));
    --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.3);
    --shadow-glow-green: 0 0 20px rgba(0, 255, 136, 0.3);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --border-radius: 12px;
    --container-padding: 2rem;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--primary-black);
    color: var(--text-white);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.8rem; }
h4 { font-size: 1.4rem; }

p {
    margin-bottom: 1rem;
    color: var(--text-gray);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: var(--transition-smooth);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo h2 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
    font-size: 1.5rem;
}

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

.nav-link {
    color: var(--text-white);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-smooth);
    position: relative;
}

.nav-link:hover {
    color: var(--accent-blue);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-smooth);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-white);
    margin: 3px 0;
    transition: var(--transition-smooth);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: radial-gradient(ellipse at center, rgba(0, 212, 255, 0.1) 0%, var(--primary-black) 70%);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.wind-turbine {
    position: absolute;
    top: 20%;
    right: 15%;
    z-index: 2;
}

.turbine-svg {
    width: 200px;
    height: 200px;
    filter: drop-shadow(var(--shadow-glow-green));
}

.turbine-blades {
    animation: rotate 3s linear infinite;
    transform-origin: 100px 100px;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.sun-rays {
    position: absolute;
    top: 15%;
    left: 10%;
    width: 100px;
    height: 100px;
    z-index: 2;
}

.ray {
    position: absolute;
    width: 4px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 2px;
    animation: pulse 2s ease-in-out infinite;
}

.ray-1 { top: 0; left: 50%; transform: translateX(-50%); }
.ray-2 { top: 15%; right: 0; transform: rotate(30deg); transform-origin: bottom center; }
.ray-3 { bottom: 15%; right: 0; transform: rotate(-30deg); transform-origin: top center; }
.ray-4 { bottom: 0; left: 50%; transform: translateX(-50%) rotate(180deg); }
.ray-5 { bottom: 15%; left: 0; transform: rotate(30deg); transform-origin: top center; }
.ray-6 { top: 15%; left: 0; transform: rotate(-30deg); transform-origin: bottom center; }

@keyframes pulse {
    0%, 100% { opacity: 0.6; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.1); }
}

.hero-content {
    text-align: center;
    z-index: 3;
    position: relative;
    max-width: 800px;
    padding: 0 var(--container-padding);
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--text-gray);
    margin-bottom: 3rem;
    animation: fadeInUp 1s ease-out 0.3s both;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 3rem;
    animation: fadeInUp 1s ease-out 0.6s both;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-blue);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-light-gray);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.cta-button {
    background: var(--gradient-primary);
    color: var(--text-white);
    border: none;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-glow);
    animation: fadeInUp 1s ease-out 0.9s both;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
}

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

/* Section Styles */
section {
    padding: 6rem 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-gray);
    max-width: 600px;
    margin: 0 auto;
}

/* Overview Section */
.overview {
    background: var(--secondary-black);
}

.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.overview-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition-smooth);
    border: 1px solid rgba(0, 212, 255, 0.1);
}

.overview-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-glow);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.overview-card h3 {
    color: var(--text-white);
    margin-bottom: 1rem;
}

/* Technology Section */
.tech-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.tech-feature {
    margin-bottom: 3rem;
}

.tech-feature h3 {
    color: var(--accent-blue);
    margin-bottom: 1rem;
}

.tech-specs {
    list-style: none;
    margin-top: 1rem;
}

.tech-specs li {
    color: var(--text-gray);
    margin-bottom: 0.5rem;
}

.tech-visual {
    position: relative;
    height: 400px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.wind-visual, .solar-visual {
    position: absolute;
    width: 100%;
    height: 50%;
}

.wind-visual {
    top: 0;
    background: linear-gradient(45deg, rgba(0, 255, 136, 0.2), transparent);
}

.solar-visual {
    bottom: 0;
    background: linear-gradient(45deg, rgba(0, 212, 255, 0.2), transparent);
}

.wind-flow {
    position: absolute;
    width: 20px;
    height: 2px;
    background: var(--accent-green);
    animation: windMove 3s linear infinite;
}

.wind-flow:nth-child(1) { top: 30%; animation-delay: 0s; }
.wind-flow:nth-child(2) { top: 50%; animation-delay: 1s; }
.wind-flow:nth-child(3) { top: 70%; animation-delay: 2s; }

@keyframes windMove {
    from { left: -20px; opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    to { left: 100%; opacity: 0; }
}

.sun-energy {
    position: absolute;
    top: 20%;
    left: 20%;
    width: 30px;
    height: 30px;
    background: radial-gradient(circle, var(--accent-blue), transparent);
    border-radius: 50%;
    animation: sunPulse 2s ease-in-out infinite;
}

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

.panel-grid {
    position: absolute;
    bottom: 20%;
    right: 20%;
    width: 60px;
    height: 40px;
    background: repeating-linear-gradient(
        0deg,
        var(--accent-blue) 0px,
        var(--accent-blue) 2px,
        transparent 2px,
        transparent 8px
    );
    opacity: 0.8;
}

/* Projects Section */
.projects {
    background: var(--secondary-black);
}

.projects-carousel {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.carousel-container {
    overflow: hidden;
    border-radius: var(--border-radius);
}

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

.project-slide {
    min-width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid rgba(0, 212, 255, 0.1);
}

.project-image {
    position: relative;
    height: 300px;
    border-radius: var(--border-radius);
    overflow: hidden;
}

.placeholder-image {
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-white);
}

.project-info h3 {
    color: var(--accent-blue);
    margin-bottom: 1rem;
}

.project-stats {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.project-stats span {
    background: rgba(0, 212, 255, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--accent-blue);
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 212, 255, 0.2);
    border: none;
    color: var(--text-white);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    z-index: 10;
}

.carousel-btn:hover {
    background: var(--accent-blue);
    box-shadow: var(--shadow-glow);
}

.prev-btn {
    left: -25px;
}

.next-btn {
    right: -25px;
}

/* Impact Section */
.impact-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.stat-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid rgba(0, 212, 255, 0.1);
    transition: var(--transition-smooth);
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-glow);
}

.stat-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.stat-info {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.stat-info .stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-blue);
}

.stat-info .stat-unit {
    font-size: 1rem;
    color: var(--text-light-gray);
}

.stat-label {
    color: var(--text-gray);
    font-size: 0.9rem;
}

.impact-charts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.chart-container {
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid rgba(0, 212, 255, 0.1);
}

/* Contact Section */
.contact {
    background: var(--secondary-black);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-icon {
    font-size: 2rem;
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-item h4 {
    color: var(--text-white);
    margin-bottom: 0.5rem;
}

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

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    position: relative;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--border-radius);
    color: var(--text-white);
    font-size: 1rem;
    transition: var(--transition-smooth);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-glow);
}

.form-group label {
    position: absolute;
    top: 1rem;
    left: 1rem;
    color: var(--text-light-gray);
    transition: var(--transition-smooth);
    pointer-events: none;
}

.form-group input:focus + label,
.form-group textarea:focus + label,
.form-group input:not(:placeholder-shown) + label,
.form-group textarea:not(:placeholder-shown) + label {
    top: -0.5rem;
    left: 0.5rem;
    font-size: 0.8rem;
    color: var(--accent-blue);
    background: var(--primary-black);
    padding: 0 0.5rem;
}

.submit-btn {
    background: var(--gradient-primary);
    color: var(--text-white);
    border: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-glow);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
}

/* Footer */
.footer {
    background: var(--primary-black);
    padding: 3rem 0 1rem;
    border-top: 1px solid rgba(0, 212, 255, 0.1);
}

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

.footer-logo h3 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.footer-logo p {
    color: var(--text-gray);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-section h4 {
    color: var(--text-white);
    margin-bottom: 1rem;
}

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

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

.footer-section ul li a {
    color: var(--text-gray);
    text-decoration: none;
    transition: var(--transition-smooth);
}

.footer-section ul li a:hover {
    color: var(--accent-blue);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 212, 255, 0.1);
    color: var(--text-light-gray);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-stats {
        gap: 2rem;
    }
    
    .tech-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .project-slide {
        grid-template-columns: 1fr;
    }
    
    .impact-charts {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--secondary-black);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .overview-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .carousel-btn {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .project-stats {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* Scroll Progress Indicator */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: var(--gradient-primary);
    z-index: 1001;
    transition: width 0.1s ease;
}

/* Loading Animation */
.loading {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.loading.loaded {
    opacity: 1;
    transform: translateY(0);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }