/* ============================================
   Innovathuis - Modern Sustainable Energy Website
   CSS Stylesheet
   ============================================ */

/* CSS Variables */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #10b981;
    --secondary-dark: #059669;
    --accent-color: #f59e0b;
    --text-primary: #1f2937;
    --text-secondary: #4b5563;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --transition: all 0.3s ease;
    --border-radius: 8px;
    --border-radius-lg: 12px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-dark);
}

address {
    font-style: normal;
}

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

/* Header & Navigation */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--bg-white);
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

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

.logo-icon {
    font-size: 1.8rem;
    color: var(--primary-color);
}

.logo-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

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

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding: 80px 20px;
    max-width: 1400px;
    margin: 0 auto;
    min-height: 80vh;
}

.hero-content {
    max-width: 600px;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-image {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    height: 500px;
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    transition: var(--transition);
    cursor: pointer;
    border: none;
    text-decoration: none;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

.btn-large {
    padding: 18px 40px;
    font-size: 1.1rem;
}

/* Sections Common Styles */
section {
    padding: 80px 0;
}

section h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-primary);
    line-height: 1.3;
}

section p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 1.05rem;
    line-height: 1.8;
}

/* Intro Section */
.intro-section {
    background-color: var(--bg-light);
}

.intro-section .container {
    max-width: 900px;
}

/* Why Section */
.why-section {
    background-color: var(--bg-white);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.why-card {
    background: var(--bg-white);
    padding: 32px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.why-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.why-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--primary-color);
}

.why-card p {
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 0;
}

/* Services Preview */
.services-preview {
    background-color: var(--bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.service-card {
    background: var(--bg-white);
    padding: 40px 32px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.35rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.service-card p {
    flex-grow: 1;
    margin-bottom: 20px;
}

.service-link {
    font-weight: 600;
    color: var(--primary-color);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: auto;
}

.service-link:hover {
    gap: 10px;
}

/* Testimonials */
.testimonials {
    background-color: var(--bg-white);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.testimonial-card {
    background: var(--bg-light);
    padding: 32px;
    border-radius: var(--border-radius-lg);
    border-left: 4px solid var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.testimonial-content {
    margin-bottom: 24px;
}

.testimonial-content p {
    font-style: italic;
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 0;
}

.testimonial-author {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.testimonial-author strong {
    color: var(--text-primary);
    font-weight: 600;
}

.testimonial-author span {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    text-align: center;
}

.cta-section h2 {
    color: white;
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.cta-section p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.15rem;
    max-width: 700px;
    margin: 0 auto 32px;
    line-height: 1.7;
}


/* Page Hero (for inner pages) */
.page-hero {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 100px 20px 60px;
    text-align: center;
}

.page-hero h1 {
    font-size: 2.75rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: white;
}

.page-hero .hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    margin: 0 auto;
}

/* About Page Styles */
.about-section {
    background-color: var(--bg-white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-top: 48px;
}

.about-content h2 {
    margin-bottom: 24px;
}

.about-image {
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    height: 450px;
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Values Section */
.values-section {
    background-color: var(--bg-light);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.value-card {
    background: var(--bg-white);
    padding: 32px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition);
}

.value-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.value-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--primary-color);
}

/* Team Section */
.team-section {
    background-color: var(--bg-white);
}

.team-section > .container > p {
    max-width: 800px;
    margin: 0 auto 48px;
    text-align: center;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.team-member {
    background: var(--bg-light);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.team-member:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.member-image {
    height: 280px;
    overflow: hidden;
}

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

.team-member:hover .member-image img {
    transform: scale(1.05);
}

.team-member h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 24px 24px 8px;
    color: var(--text-primary);
}

.member-role {
    color: var(--primary-color);
    font-weight: 500;
    margin: 0 24px 16px;
    font-size: 0.95rem;
}

.member-bio {
    margin: 0 24px 24px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Certifications Section */
.certifications-section {
    background-color: var(--bg-light);
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.certification-item {
    background: var(--bg-white);
    padding: 32px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition);
}

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

.cert-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.certification-item h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

/* Services Page Styles */
.services-overview {
    background-color: var(--bg-white);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.step {
    position: relative;
    padding: 32px;
    background: var(--bg-light);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
}

.step-number {
    position: absolute;
    top: -20px;
    left: 32px;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    box-shadow: var(--shadow-md);
}

.step h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 16px;
    margin-top: 10px;
    color: var(--text-primary);
}

/* Detailed Services */
.detailed-services {
    background-color: var(--bg-light);
}

.services-detail-list {
    margin-top: 48px;
}

.service-detail {
    background: var(--bg-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: 32px;
    overflow: hidden;
}

.service-detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 32px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
}

.service-detail-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: white;
}

.price-indicator {
    background: rgba(255, 255, 255, 0.2);
    padding: 8px 16px;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 0.95rem;
}

.service-detail-content {
    padding: 32px;
}

.service-detail-content h4 {
    font-size: 1.15rem;
    font-weight: 600;
    margin: 24px 0 12px;
    color: var(--text-primary);
}

.service-detail-content ul {
    margin: 16px 0 24px 24px;
}

.service-detail-content li {
    margin-bottom: 12px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.service-detail-content a {
    color: var(--primary-color);
    font-weight: 500;
}

/* Process Section */
.process-section {
    background-color: var(--bg-white);
    text-align: center;
}

.process-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 32px;
}

/* Contact Page Styles */
.contact-section {
    background-color: var(--bg-white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    margin-top: 48px;
}

.contact-info h2 {
    margin-bottom: 20px;
}

.contact-details {
    margin: 40px 0;
}

.contact-item {
    display: flex;
    gap: 20px;
    margin-bottom: 32px;
}

.contact-icon {
    font-size: 2rem;
    color: var(--primary-color);
    flex-shrink: 0;
}

.contact-text h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.contact-text p,
.contact-text a {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 0;
}

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

.map-placeholder {
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    height: 300px;
    background-color: var(--bg-light);
}

.map-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--bg-light);
    padding: 40px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-form-wrapper h2 {
    margin-bottom: 16px;
}

.contact-form-wrapper > p {
    margin-bottom: 32px;
}

.form-group {
    margin-bottom: 24px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--bg-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.checkbox-group {
    margin-bottom: 32px;
}

.checkbox-group label {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-weight: 400;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
    margin-top: 3px;
}

.checkbox-group a {
    color: var(--primary-color);
}

/* FAQ Section */
.faq-section {
    background-color: var(--bg-light);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.faq-item {
    background: var(--bg-white);
    padding: 32px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.faq-item h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

/* Footer */
.footer {
    background-color: var(--text-primary);
    color: white;
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-column h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
}

.footer-column p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
    margin-bottom: 0;
}

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

.footer-column ul li {
    margin-bottom: 12px;
}

.footer-column ul a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

.footer-column ul a:hover {
    color: white;
    padding-left: 5px;
}

.footer-column address a {
    color: rgba(255, 255, 255, 0.8);
}

.footer-column address a:hover {
    color: white;
}

.social-links {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.social-links a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

.social-links a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 24px 0;
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom a:hover {
    color: white;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 60px 20px;
        min-height: auto;
    }

    .hero-content {
        max-width: 100%;
        text-align: center;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-image {
        height: 400px;
        order: -1;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-image {
        height: 350px;
        order: -1;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background-color: var(--bg-white);
        flex-direction: column;
        padding: 24px;
        gap: 0;
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-menu li {
        width: 100%;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-menu li:last-child {
        border-bottom: none;
    }

    .nav-link {
        display: block;
        padding: 16px 0;
        font-size: 1.1rem;
    }

    .hero h1 {
        font-size: 2.25rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    section h2 {
        font-size: 1.75rem;
    }

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

    .page-hero .hero-subtitle {
        font-size: 1.1rem;
    }

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

    .contact-form-wrapper {
        padding: 24px;
    }

    .service-detail-header {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }

    .cta-section h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero {
        padding: 40px 16px;
    }

    .hero h1 {
        font-size: 1.85rem;
    }

    section {
        padding: 60px 0;
    }

    section h2 {
        font-size: 1.5rem;
    }

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

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

    .process-cta {
        flex-direction: column;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

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

.mt-48 {
    margin-top: 48px;
}

.mb-32 {
    margin-bottom: 32px;
}

/* Smooth Scrolling for anchor links */
html {
    scroll-padding-top: 80px;
}

/* Focus styles for accessibility */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .header,
    .footer,
    .cta-section,
    .mobile-menu-btn {
        display: none;
    }

    body {
        font-size: 12pt;
    }

    .container {
        max-width: 100%;
    }
}