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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

/* Navigation Styles */
.navbar {
    background-color: #2c3e50;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
}

.nav-logo a {
    color: #ecf0f1;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-logo img {
    height: 40px;
    width: auto;
    max-width: 120px;
    object-fit: contain;
}

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

.nav-link {
    color: #ecf0f1;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.nav-link:hover {
    background-color: #34495e;
}

/* Hamburger Menu Styles */
.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 5px;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: #ecf0f1;
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 3px;
}

/* Main Content */
main {
    margin-top: 60px;
    min-height: calc(100vh - 60px);
}

.hero {
    text-align: center;
    padding: 4rem 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.hero p {
    font-size: 1.2rem;
    color: #7f8c8d;
    max-width: 600px;
    margin: 0 auto;
}

/* Mobile Styles */
@media screen and (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 60px;
        flex-direction: column;
        background-color: #2c3e50;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0,0,0,0.05);
        padding: 2rem 0;
        gap: 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-link {
        display: block;
        padding: 1rem;
        margin: 0.5rem 1rem;
        border-radius: 4px;
    }

    .nav-toggle {
        display: flex;
    }

    /* Hamburger Animation */
    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

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

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

    .hero {
        padding: 2rem 1rem;
    }
}

/* Tablet Styles */
@media screen and (min-width: 769px) and (max-width: 1024px) {
    .nav-container {
        padding: 0 40px;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
}

/* Desktop Styles */
@media screen and (min-width: 1025px) {
    .hero h1 {
        font-size: 3.5rem;
    }
    
    .nav-link:hover {
        transform: translateY(-2px);
    }
}

/* Survey Link Styles */
.survey-link {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    background-color: #3498db;
    color: white;
    text-decoration: none;
    padding: 1rem 2rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: 500;
    margin-top: 1rem;
    box-shadow: 0 2px 10px rgba(52, 152, 219, 0.3);
}

.survey-link:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.4);
    color: white;
}

.survey-icon {
    width: 24px;
    height: 24px;
    background-color: white;
    border-radius: 4px;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.survey-icon::before {
    content: "🅿️";
    font-size: 14px;
}

/* Event Card Styles */
.event-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.event-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    transform: translate(30px, -30px);
}

.event-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.event-logo-placeholder {
    width: 60px;
    height: 60px;
    background: rgba(255,255,255,0.2);
    border: 2px dashed rgba(255,255,255,0.5);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    text-align: center;
    flex-shrink: 0;
}

.event-info h3 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: bold;
}

.event-date {
    background: rgba(255,255,255,0.2);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: bold;
    display: inline-block;
    margin: 1rem 0;
}

.payment-links {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.payment-link {
    background: rgba(255,255,255,0.2);
    color: white;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    border: 2px dashed rgba(255,255,255,0.5);
    transition: all 0.3s ease;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.payment-link:hover {
    background: rgba(255,255,255,0.3);
    color: white;
    transform: translateY(-2px);
}

.payment-link.placeholder {
    cursor: default;
    opacity: 0.7;
}

.payment-link.placeholder:hover {
    transform: none;
    background: rgba(255,255,255,0.2);
}

/* Zelle QR Code Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.8);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background-color: white;
    margin: 10% auto;
    padding: 2rem;
    border-radius: 12px;
    width: 90%;
    max-width: 400px;
    text-align: center;
    position: relative;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    position: absolute;
    right: 15px;
    top: 10px;
    cursor: pointer;
}

.close:hover,
.close:focus {
    color: #000;
}

.qr-image {
    width: 100%;
    max-width: 250px;
    height: auto;
    border-radius: 8px;
    margin: 1rem 0;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Social Media Links */
.social-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: #f8f9fa;
    border: 2px dashed #ddd;
    border-radius: 8px;
    text-decoration: none;
    color: #2c3e50;
    transition: all 0.3s ease;
    cursor: default;
}

.social-link:hover {
    background: #e9ecef;
    border-color: #bbb;
}

.social-logo-placeholder {
    width: 40px;
    height: 40px;
    background: #e9ecef;
    border: 2px dashed #ccc;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    text-align: center;
    flex-shrink: 0;
    color: #666;
}

.social-info {
    flex: 1;
}

.social-info h4 {
    margin: 0 0 0.25rem 0;
    font-size: 1rem;
    color: #2c3e50;
}

.social-info p {
    margin: 0;
    font-size: 0.85rem;
    color: #7f8c8d;
}

@media screen and (max-width: 768px) {
    .social-links {
        grid-template-columns: 1fr;
    }
}

/* Guidelines Section - Required Reading */
.guidelines-section {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
    margin: 2rem auto;
    max-width: 800px;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(231, 76, 60, 0.3);
    position: relative;
    overflow: hidden;
}

.guidelines-section::before {
    content: '⚠️';
    font-size: 3rem;
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    opacity: 0.3;
}

.guidelines-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.guidelines-icon {
    font-size: 2rem;
    background: rgba(255,255,255,0.2);
    padding: 0.75rem;
    border-radius: 12px;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.guidelines-content h2 {
    margin: 0;
    font-size: 1.75rem;
    font-weight: bold;
}

.guidelines-subtitle {
    background: rgba(255,255,255,0.2);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: bold;
    display: inline-block;
    margin: 1rem 0;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.guidelines-placeholder {
    background: rgba(255,255,255,0.1);
    border: 2px dashed rgba(255,255,255,0.3);
    border-radius: 8px;
    padding: 1.5rem;
    text-align: center;
    margin: 1rem 0;
}

.guidelines-placeholder p {
    margin: 0;
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Footer Styles */
.footer {
    background-color: #2c3e50;
    color: #ecf0f1;
    text-align: center;
    padding: 2rem 1rem;
    margin-top: 3rem;
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer p {
    margin: 0;
    max-width: 800px;
    margin: 0 auto;
}