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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

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

h1 {
    font-size: 3.5rem;
    font-weight: 700;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1rem;
    color: #666;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
    border-color: #2563eb;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
    background: transparent;
    color: #2563eb;
    border-color: #2563eb;
}

.btn-secondary:hover {
    background: #2563eb;
    color: white;
}

.btn-outline {
    background: transparent;
    color: #059669;
    border-color: #059669;
}

.btn-outline:hover {
    background: #059669;
    color: white;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

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

.nav-brand {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: #2563eb;
}

.nav-brand .logo {
    height: 40px;
    width: auto;
    margin-right: 0.5rem;
    border-radius: 5px;
}

.nav-brand i {
    margin-right: 0.5rem;
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #2563eb;
}

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('turno_volt_assets/BackDrop.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0.3;
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero-content {
    text-align: center;
}

.hero h1 {
    margin-bottom: 1.5rem;
    color: #1e293b;
}

.highlight {
    background: linear-gradient(135deg, #2563eb, #059669);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 3rem;
    color: #64748b;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.stat {
    text-align: center;
    padding: 2rem;
}

.stat h3 {
    font-size: 2rem;
    color: #2563eb;
    margin-bottom: 0.5rem;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.stat p {
    color: #1e293b;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
    padding-top: 20px;
}

.section-header h2 {
    color: #1e293b;
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.125rem;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
}

/* USP Section */
.usp {
    padding: 140px 0 80px;
    background: white;
}

.usp-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.usp-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    text-align: center;
    padding: 3rem 2rem;
}

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

.usp-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #2563eb, #059669);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
}

.usp-icon i {
    font-size: 2rem;
    color: white;
}

.usp-card h3 {
    color: #1e293b;
    margin-bottom: 1rem;
}

/* Products Section */
.products {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.product-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    position: relative;
}

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

.product-image {
    background: white;
    padding: 2rem;
    text-align: center;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid #e2e8f0;
}

.product-image img {
    max-width: 100%;
    max-height: 160px;
    width: auto;
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.product-image.multiple-units {
    background: white;
    padding: 1rem;
    height: 220px;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0.5rem;
    align-items: center;
    justify-items: center;
    position: relative;
}

.product-image.multiple-units img {
    max-width: 100%;
    max-height: 35px;
    opacity: 0.8;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.product-image.multiple-units::after {
    content: "Scalable Configuration";
    position: absolute;
    bottom: 5px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.75rem;
    color: #64748b;
    font-weight: 500;
    background: rgba(255, 255, 255, 0.9);
    padding: 2px 8px;
    border-radius: 10px;
}

.product-image i {
    font-size: 4rem;
    color: white;
}

.product-info {
    padding: 2rem;
}

.product-specs {
    background: #f8fafc;
    border-radius: 10px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.spec {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
    gap: 1rem;
}

.spec:last-child {
    margin-bottom: 0;
}

.spec-label {
    font-weight: 500;
    color: #64748b;
    min-width: 80px;
    flex-shrink: 0;
}

.spec-value {
    font-weight: 600;
    color: #1e293b;
    text-align: right;
    flex: 1;
}

/* Segments Section */
.segments {
    padding: 140px 0 80px;
    background: white;
}

.segments-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.segment-card {
    text-align: center;
    padding: 2rem;
    border-radius: 15px;
    background: #f8fafc;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.segment-card:hover {
    border-color: #2563eb;
    transform: translateY(-5px);
}

.segment-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #2563eb, #059669);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.segment-icon i {
    font-size: 1.5rem;
    color: white;
}

.segment-card h3 {
    color: #1e293b;
    margin-bottom: 1rem;
}

/* About Section */
.about {
    padding: 80px 0;
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    color: white;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about h2 {
    color: white;
    margin-bottom: 2rem;
}

.about-text p {
    color: #cbd5e1;
    font-size: 1.125rem;
    margin-bottom: 3rem;
}

.about-features {
    space-y: 2rem;
}

.feature {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.feature i {
    font-size: 1.5rem;
    color: #3b82f6;
    margin-top: 0.25rem;
}

.feature-content h4 {
    color: white;
    margin-bottom: 0.5rem;
}

.feature-content p {
    color: #cbd5e1;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.stat-item h3 {
    font-size: 2.5rem;
    color: #3b82f6;
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: #cbd5e1;
}

/* Contact Section */
.contact {
    padding: 140px 0 80px;
    background: white;
}

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

.contact-info {
    space-y: 2rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #2563eb, #059669);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    color: white;
    font-size: 1.25rem;
}

.contact-details h4 {
    color: #1e293b;
    margin-bottom: 0.5rem;
}

.contact-details p {
    color: #64748b;
}

.contact-details a {
    color: #2563eb;
    text-decoration: none;
}

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

.contact-form {
    background: #f8fafc;
    padding: 2rem;
    border-radius: 20px;
}

.form-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2563eb;
}

.form-group textarea,
.form-group select {
    grid-column: 1 / -1;
}

.contact-form button {
    width: 100%;
    border: none;
}

/* Footer */
.footer {
    background: #1e293b;
    color: white;
    padding: 3rem 0 1rem;
}

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

.footer-brand p {
    color: #cbd5e1;
    margin-top: 1rem;
}

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

.footer-section h4 {
    color: white;
    margin-bottom: 1rem;
}

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

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

.footer-section ul li a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #334155;
    color: #94a3b8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }

    .nav-menu {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .usp-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1.5rem;
    }

    .products-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1.5rem;
    }

    .product-image.multiple-units {
        grid-template-columns: repeat(3, 1fr);
        grid-template-rows: repeat(2, 1fr);
        height: 180px;
        padding: 0.5rem;
    }

    .product-image.multiple-units img {
        max-height: 25px;
    }

    .segments-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .form-group {
        grid-template-columns: 1fr;
    }

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

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

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .stat {
        padding: 1.5rem;
    }

    .usp-card,
    .segment-card {
        padding: 2rem 1rem;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }
}

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

.hero-content,
.usp-card,
.product-card,
.segment-card {
    animation: fadeInUp 0.6s ease-out;
}

/* Smooth scrolling offset for fixed header */
section {
    scroll-margin-top: 160px;
}