/* Nachhaltigkeitsforum 2026 - Stylesheet */

/* Variables based on AAU design */
:root {
    --primary-color: #236282;          /* Navy blue */
    --secondary-color: #0bb4aa;        /* Teal/turquoise */
    --text-color: #444444;
    --heading-color: #284a57;
    --white: #ffffff;
    --light-gray: #f5f5f5;
    --border-color: #e0e0e0;
    --error-color: #d32f2f;
    --success-color: #4caf50;
    
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Onest', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-gray);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--heading-color);
    font-weight: 600;
    line-height: 1.3;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

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

/* Header */
.site-header {
    background-color: var(--primary-color);
    padding: 1rem 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    height: 50px;
    width: auto;
}

/* Language Switcher */
.lang-switcher {
    display: flex;
    gap: 0.5rem;
}

.lang-btn {
    background-color: transparent;
    color: var(--white);
    padding: 0.5rem 1rem;
    border: 2px solid var(--white);
    border-radius: 4px;
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

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

.lang-btn.active {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    color: var(--white);
}

/* Main Content */
.main-content {
    background-color: var(--white);
    min-height: calc(100vh - 200px);
    padding: 3rem 0;
}

/* Hero Section */
.hero {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem 0;
}

.hero h1 {
    color: var(--primary-color);
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--secondary-color);
    font-weight: 200;
    margin-top: 0.5rem;
}

/* Intro Section */
.intro-section {
    max-width: 900px;
    margin: 0 auto 3rem;
    padding: 2rem;
    background-color: var(--light-gray);
    border-radius: 8px;
}

.event-info {
    margin-top: 1.5rem;
    padding: 1rem;
    background-color: var(--white);
    border-left: 4px solid var(--secondary-color);
}

/* Form Section */
.form-section {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

.form-section h2 {
    margin-bottom: 2rem;
    text-align: center;
    color: var(--primary-color);
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

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

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--heading-color);
}

.required {
    color: var(--error-color);
}

input[type="text"],
input[type="email"],
select,
textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    font-family: var(--font-body);
    transition: border-color 0.3s ease;
}

input[type="text"]:focus,
input[type="email"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
}

textarea {
    resize: vertical;
    min-height: 100px;
}

.hint {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: #666;
    font-style: italic;
}

/* Buttons */
.submit-btn,
.secondary-btn {
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--font-heading);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.submit-btn {
    background-color: var(--secondary-color);
    color: var(--white);
    width: 100%;
    margin-top: 1rem;
}

.submit-btn:hover {
    background-color: #076c65;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(11, 180, 170, 0.3);
}

.secondary-btn {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    display: inline-block;
    margin-bottom: 1.5rem;
}

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

/* Contributors Section */
.contributors-section {
    margin: 2rem 0;
}

.contributors-section h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

#contributors-container {
    margin-bottom: 1.5rem;
}

.contributor-group {
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    background-color: var(--light-gray);
    border-radius: 8px;
    border: 2px solid var(--border-color);
}

.contributor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.contributor-header h4 {
    margin: 0;
    color: var(--primary-color);
}

.remove-contributor {
    background-color: var(--error-color);
    color: var(--white);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: background-color 0.3s ease;
}

.remove-contributor:hover {
    background-color: #b71c1c;
}

.add-btn {
    background-color: var(--secondary-color);
    color: var(--white);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    margin-bottom: 1rem;
}

.add-btn:hover {
    background-color: #076c65;
    transform: translateY(-2px);
}

/* Messages */
#message-container {
    margin-bottom: 1.5rem;
}

.message {
    padding: 1rem 1.5rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.success-message {
    background-color: #e8f5e9;
    color: #2e7d32;
    border-left: 4px solid var(--success-color);
}

.error-message {
    background-color: #ffebee;
    color: #c62828;
    border-left: 4px solid var(--error-color);
    display: none;
}

.error-message.show {
    display: block;
}

/* Word Count */
#word-count {
    font-weight: 600;
    color: var(--secondary-color);
}

#word-count.warning {
    color: #ff9800;
}

#word-count.error {
    color: var(--error-color);
}

/* Download Links */
.download-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.download-item {
    padding: 2rem;
    background-color: var(--light-gray);
    border-radius: 8px;
    text-align: center;
}

.download-item h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.download-item .submit-btn {
    display: inline-block;
    width: auto;
    padding: 0.75rem 2rem;
}

/* Footer */
.site-footer {
    background-color: var(--primary-color);
    color: var(--white);
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
}

.site-footer a {
    color: var(--secondary-color);
}

.site-footer a:hover {
    color: var(--white);
}

/* Another Submission Link */
.another-submission-link {
    margin-top: 1.5rem;
    text-align: center;
    font-size: 1.1rem;
}

.another-submission-link a {
    color: var(--secondary-color);
    text-decoration: underline;
    font-weight: 500;
}

.another-submission-link a:hover {
    color: var(--primary-color);
}

/* Program and Poster Info Sections */
.program-section,
.poster-info {
    margin: 2rem 0;
    padding: 1.5rem;
    background-color: var(--light-gray);
    border-radius: 8px;
}

.program-section h3,
.poster-info-heading {
    color: var(--primary-color);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.program-content p,
.poster-info p {
    line-height: 1.8;
    margin-bottom: 1rem;
}

.program-content strong {
    color: var(--primary-color);
    font-weight: 600;
}

.program-content em {
    color: var(--text-color);
    font-style: italic;
}

.poster-info a {
    color: var(--secondary-color);
    text-decoration: underline;
}

.poster-info a:hover {
    color: var(--primary-color);
}

/* Privacy and Photo Notices */
.privacy-notice {
    background-color: var(--light-gray);
    border-left: 4px solid var(--secondary-color);
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 4px;
}

.privacy-notice p {
    margin-bottom: 0.75rem;
}

.privacy-notice p:last-child {
    margin-bottom: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .hero {
        padding: 1rem 0;
    }
    
    .intro-section,
    .form-section {
        padding: 1rem;
    }
    
    .download-links {
        grid-template-columns: 1fr;
    }
    
    .lang-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.5rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .logo {
        height: 40px;
    }
}

/* Print Styles */
@media print {
    .site-header,
    .site-footer,
    .lang-switcher {
        display: none;
    }
}