:root {
    --primary-color: #2E8B57;           /* Meergrün - Hauptfarbe */
    --secondary-color: #4682B4;        /* Stahlblau - Akzentfarbe */
    --light-bg: #F8F9FA;               /* Hellgrau - Hintergrund */
    --white: #FFFFFF;                  /* Reinweiß */
    --text-primary: #2C3E50;           /* Dunkelgrau - Haupttext */
    --text-secondary: #7F8C8D;         /* Mittelgrau - Sekundärtext */
    --card-bg: #FFFFFF;                /* Weiß - Kartenhintergrund */
    --card-border: #E0E0E0;            /* Hellgrau - Kartenrahmen */
    --success-color: #27AE60;          /* Grün - Erfolg */
    --warning-color: #F39C12;          /* Orange - Warnung */
    --shadow-color: rgba(0, 0, 0, 0.1); /* Sanfter Schatten */
}

body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    background: var(--light-bg);
    color: var(--text-primary);
    line-height: 1.6;
}

.background-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('river-bg.jpg') no-repeat center center/cover;
    z-index: -1;
    filter: brightness(0.9) saturate(1.2);
}

/* Eco Monitoring Map Section */
.eco-map-section {
    margin: 2rem 0;
    padding: 0 1rem;
}

.eco-monitoring-container {
    max-width: 1400px;
    margin: 0 auto;
}

/* Work in Progress Banner */
.wip-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: #DC3545; /* Rot - Warnfarbe */
    color: white;
    text-align: center;
    padding: 12px 20px;
    font-weight: 500;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.wip-banner strong {
    margin-right: 10px;
}

/* Sidebar & Layout - adjusted for banner */
.sidebar {
    position: fixed;
    top: 50px; /* Make space for banner */
    width: 250px;
    height: calc(100vh - 50px);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-right: 1px solid var(--card-border);
    padding: 2rem 1rem;
    box-shadow: 2px 0 10px var(--shadow-color);
}

main {
    margin-left: 280px;
    padding: 2rem;
    padding-top: 3rem; /* Additional space for banner */
    min-height: 100vh;
}

main {
    margin-left: 280px;
    padding: 2rem;
    min-height: 100vh;
}

/* Cards & Panels */
.glass-panel {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 12px var(--shadow-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-panel:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

/* Buttons & Forms */
.btn-primary {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
}

.btn-primary:hover {
    background: #287A4F;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(46, 139, 87, 0.3);
}

.btn-secondary {
    background: var(--secondary-color);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: #3A6D9C;
    transform: translateY(-1px);
}

.form-group {
    margin-bottom: 1rem;
}

.form-group input {
    width: 100%;
    padding: 0.8rem;
    border-radius: 6px;
    border: 1px solid var(--card-border);
    background: var(--white);
    color: var(--text-primary);
    box-sizing: border-box;
    transition: border-color 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(46, 139, 87, 0.2);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    max-width: 400px;
    width: 90%;
    background: var(--white);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

/* Welcome Section */
.welcome-section {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 12px var(--shadow-color);
    max-width: 800px;
    transition: transform 0.3s ease;
}

.welcome-section:hover {
    transform: translateY(-2px);
}

.welcome-section h2 {
    color: var(--primary-color);
    margin-top: 0;
    font-size: 1.8rem;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
}

.welcome-section p {
    line-height: 1.6;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.welcome-section a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 1px dashed var(--primary-color);
}

.welcome-section a:hover {
    color: #287A4F;
    border-bottom-color: #287A4F;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, rgba(46, 139, 87, 0.1), rgba(70, 130, 180, 0.1));
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 3rem 2rem;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--text-primary);
}

.hero h1 {
    font-size: 2.5rem;
    margin: 0 0 1rem 0;
    color: var(--primary-color);
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Images */
.welcome-section img {
    border-radius: 8px;
    box-shadow: 0 2px 8px var(--shadow-color);
    transition: transform 0.3s ease;
}

.welcome-section img:hover {
    transform: scale(1.02);
}

/* Footer */
footer {
    margin-top: 3rem;
    padding: 1.5rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-top: 1px solid var(--card-border);
}

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

footer a:hover {
    text-decoration: underline;
}

/* Mobile Menu Toggle Button */
.mobile-menu-toggle {
    display: none;
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1001;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    padding: 0.5rem 0.8rem;
    cursor: pointer;
    box-shadow: 0 2px 8px var(--shadow-color);
    transition: all 0.3s ease;
}

.mobile-menu-toggle:hover {
    background: #287A4F;
    transform: translateY(-1px);
}

.mobile-menu-toggle .hamburger-icon {
    font-size: 1.5rem;
    font-weight: bold;
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mobile-menu-overlay.active {
    display: block;
    opacity: 1;
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        width: 200px;
    }
    
    main {
        margin-left: 230px;
        padding: 1.5rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .welcome-section {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .sidebar {
        position: fixed;
        top: 0;
        left: -250px;
        width: 250px;
        height: 100vh;
        z-index: 1002;
        transition: left 0.3s ease;
        overflow-y: auto;
    }
    
    .sidebar.active {
        left: 0;
    }
    
    main {
        margin-left: 0;
        padding: 1rem;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    body.menu-open {
        overflow: hidden;
    }
}