/* ===================================
   Responsive Styles
   =================================== */

/* Header & Navigation */
.header {
    background-color: var(--color-bg);
    box-shadow: var(--shadow-sm);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all var(--transition-normal);
}

.header.sticky {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.nav-brand .logo {
    height: 50px;
    width: auto;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--color-text);
    transition: all var(--transition-fast);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--color-text);
    font-weight: 600;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
    background-color: rgba(255, 140, 0, 0.1);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    background-image: url('../images/hero/solar-hero.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: var(--color-bg);
    padding-top: 80px;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 51, 102, 0.7);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: 0 var(--spacing-md);
}

.hero-logo {
    max-width: 878px;
    margin: 0 auto var(--spacing-md);
    background: var(--color-bg);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
}

.hero-title {
    font-size: 56px;
    margin-bottom: var(--spacing-sm);
    color: var(--color-bg);
}

.hero-subtitle {
    font-size: 24px;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 32px;
    color: var(--color-bg);
    cursor: pointer;
    transition: opacity var(--transition-normal);
}

/* Stats Section */
.stat-card {
    padding: var(--spacing-lg) var(--spacing-md);
}

.stat-icon {
    font-size: 48px;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
}

.stat-unit {
    font-size: 20px;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 16px;
    color: var(--color-text);
}

/* Company Cards */
.company-card {
    text-align: center;
    padding: var(--spacing-lg);
}

.company-logo {
    max-width: 878px;
    margin: 0 auto var(--spacing-md);
}

.company-role {
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

/* CTA Section */
.cta {
    padding: var(--spacing-xl) 0;
}

.cta h2 {
    margin-bottom: var(--spacing-sm);
}

.cta p {
    font-size: 18px;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-light);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    background-color: var(--color-accent);
    color: var(--color-bg);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer h4 {
    color: var(--color-bg);
    margin-bottom: var(--spacing-sm);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    justify-items: center;
}

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

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

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

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

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--color-bg);
    font-size: 20px;
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background-color: var(--color-primary);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* Tablet (768px - 1024px) */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 42px;
    }
    
    .hero-subtitle {
        font-size: 20px;
    }
}

/* Mobile (max-width: 768px) */
@media (max-width: 768px) {
    /* Navigation */
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(7px, 7px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--color-bg);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
    }
    
    .nav-menu.active {
        transform: translateX(0);
    }
    
    body.nav-open {
        overflow: hidden;
    }
    
    /* Hero */
    .hero-title {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .hero-logo {
        max-width: 150px;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-cta .btn {
        width: 100%;
    }
    
    /* Stats */
    .stat-number {
        font-size: 36px;
    }
    
    .stat-icon {
        font-size: 36px;
    }
    
    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
}

/* Small Mobile (max-width: 480px) */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .btn {
        padding: 10px 24px;
        font-size: 14px;
    }
}


/* Page Hero (for internal pages) */
.page-hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    background-image: url('../images/hero/projekte-hero.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: var(--color-bg);
    padding: 120px 0 80px;
    text-align: center;
    position: relative;
}

.page-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 51, 102, 0.7);
    z-index: 0;
}

.page-hero .container {
    position: relative;
    z-index: 1;
}

.page-hero-logo {
    max-width: 878px;
    margin: 0 auto var(--spacing-md);
    background: var(--color-bg);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
}

.page-hero h1 {
    color: var(--color-bg);
    margin-bottom: var(--spacing-sm);
}

.page-hero p {
    font-size: 20px;
    opacity: 0.9;
}

/* Projekt Info */
.projekt-info {
    padding: var(--spacing-xl) 0;
}

.projekt-info .grid {
    max-width: 1000px;
    margin: 0 auto;
}

.projekt-info ul {
    list-style: none;
    padding-left: 0;
}

.projekt-info ul li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
}

.projekt-info ul li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: bold;
}

/* Tech Data */
.tech-data {
    padding: var(--spacing-xl) 0;
}

.tech-card {
    padding: var(--spacing-lg);
}

.tech-icon {
    font-size: 48px;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.tech-card h3 {
    font-size: 36px;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

/* Performance */
.performance {
    padding: var(--spacing-xl) 0;
}

.performance-card {
    padding: var(--spacing-lg);
}

.performance-icon {
    font-size: 36px;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
}

/* Company Data */
.company-data {
    padding: var(--spacing-xl) 0;
}

.company-info-box {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

.company-info-box p {
    margin-bottom: var(--spacing-sm);
}

.company-info-box i {
    color: var(--color-primary);
    margin-right: var(--spacing-xs);
}

@media (max-width: 768px) {
    .page-hero {
        padding: 100px 0 60px;
    }
    
    .page-hero-logo {
        max-width: 150px;
    }
    
    .page-hero h1 {
        font-size: 28px;
    }
    
    .page-hero p {
        font-size: 16px;
    }
}


/* Kontakt Page */
.kontakt-info {
    padding: var(--spacing-xl) 0;
}

.kontakt-card {
    padding: var(--spacing-lg);
    text-align: center;
}

.kontakt-logo {
    max-width: 878px;
    margin: 0 auto var(--spacing-md);
}

.company-subtitle {
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.kontakt-details {
    text-align: center;
}

.kontakt-details p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
}

.kontakt-details i {
    color: var(--color-primary);
    margin-right: var(--spacing-xs);
    width: 20px;
}

.kontakt-details a {
    color: var(--color-primary);
}

/* Kontakt Form */
.kontakt-form-section {
    padding: var(--spacing-xl) 0;
}

.kontakt-form {
    max-width: 800px;
    margin: var(--spacing-lg) auto 0;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: var(--fs-body);
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-group textarea {
    resize: vertical;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xs);
    font-weight: normal;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin-top: 4px;
}

.form-actions {
    text-align: center;
    margin-top: var(--spacing-lg);
}

.form-message {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    text-align: center;
    display: none;
}

.form-message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    display: block;
}

.form-message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    display: block;
}

/* Map */
.map-section {
    padding: var(--spacing-xl) 0;
}

.map-container {
    margin: var(--spacing-lg) 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .kontakt-details {
        font-size: 14px;
    }
}


/* Über uns Page */
.geschichte {
    padding: var(--spacing-xl) 0;
}

.intro-text {
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
    font-size: 18px;
    color: var(--color-text-light);
}

/* Timeline */
.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-primary);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-lg);
    padding-left: 80px;
}

.timeline-marker {
    position: absolute;
    left: 0;
    top: 0;
    width: 60px;
    height: 60px;
    background: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-bg);
    font-size: 24px;
    box-shadow: var(--shadow-md);
}

.timeline-content {
    padding: var(--spacing-md);
}

.timeline-content h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

/* Unternehmen Cards */
.unternehmen {
    padding: var(--spacing-xl) 0;
}

.unternehmen-card {
    padding: var(--spacing-lg);
    text-align: center;
}

.unternehmen-logo {
    max-width: 878px;
    margin: 0 auto var(--spacing-md);
}

.unternehmen-subtitle {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 18px;
    margin-bottom: var(--spacing-md);
}

.unternehmen-details {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md);
    background: var(--color-bg-light);
    border-radius: var(--radius-sm);
}

.unternehmen-details p {
    margin-bottom: var(--spacing-xs);
}

.unternehmen-card h4 {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.unternehmen-card ul {
    list-style: none;
    padding: 0;
    text-align: center;
    max-width: 300px;
    margin: 0 auto;
}

.unternehmen-card ul li {
    padding: var(--spacing-xs) 0;
    padding-left: 0;
    position: relative;
}

.unternehmen-card ul li::before {
    content: "";
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

/* Mission & Vision */
.mission-vision {
    padding: var(--spacing-xl) 0;
}

.mission-card,
.vision-card {
    padding: var(--spacing-lg);
    text-align: center;
}

.mission-icon,
.vision-icon {
    font-size: 48px;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

/* Standort */
.standort {
    padding: var(--spacing-xl) 0;
}

.standort-content {
    max-width: 800px;
    margin: 0 auto;
}

.standort-info ul {
    list-style: none;
    padding: 0;
    margin: var(--spacing-md) 0;
}

.standort-info ul li {
    padding: var(--spacing-xs) 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.standort-info ul li i {
    color: var(--color-success);
}

@media (max-width: 768px) {
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        padding-left: 60px;
    }
    
    .timeline-marker {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }
    
    .unternehmen-card ul {
        max-width: 100%;
    }
}