* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Grünes Farbschema - Waldklinik Jesteburg inspiriert */
    --green-primary: #2d5016;
    --green-secondary: #4a7c2a;
    --green-light: #6bb84a;
    --green-lighter: #8bc34a;
    --green-bg: #f1f8ed;
    --green-border: #c5e1a5;
    
    /* Neutrale Farben */
    --white: #ffffff;
    --gray-light: #f8f9fa;
    --gray: #6c757d;
    --gray-dark: #495057;
    --text-dark: #212529;
    --text-light: #6c757d;
    
    /* Akzentfarben */
    --success: #28a745;
    --danger: #dc3545;
    --warning: #ffc107;
    --info: #17a2b8;
}

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--green-bg);
    min-height: 100vh;
    padding: 20px;
    color: var(--text-dark);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

/* Header */
.header {
    background: var(--white);
    padding: 18px 24px;
    border-radius: 8px;
    margin-bottom: 16px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-left: 4px solid var(--green-primary);
}

.header h1 {
    color: var(--green-primary);
    font-size: 22px;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-info span {
    color: var(--text-light);
    font-size: 14px;
}

/* Navigation */
.nav {
    background: var(--white);
    padding: 12px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.nav ul {
    list-style: none;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.nav a {
    color: var(--green-secondary);
    text-decoration: none;
    padding: 6px 14px;
    border-radius: 4px;
    transition: all 0.2s ease;
    font-size: 14px;
    font-weight: 500;
}

.nav a:hover {
    background: var(--green-bg);
    color: var(--green-primary);
}

.nav a.active {
    background: var(--green-primary);
    color: var(--white);
}

/* Auth Container */
.auth-container {
    background: var(--white);
    padding: 36px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    max-width: 480px;
    margin: 50px auto;
    border-top: 3px solid var(--green-primary);
}

.auth-container h1 {
    text-align: center;
    color: var(--green-primary);
    margin-bottom: 28px;
    font-size: 24px;
    font-weight: 600;
}

.tabs {
    display: flex;
    gap: 0;
    margin-bottom: 24px;
    border-bottom: 2px solid var(--gray-light);
}

.tab-button {
    background: none;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    color: var(--text-light);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all 0.2s;
    font-size: 14px;
    font-weight: 500;
}

.tab-button.active {
    color: var(--green-primary);
    border-bottom-color: var(--green-primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Forms */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #dee2e6;
    border-radius: 4px;
    font-size: 14px;
    transition: border-color 0.2s;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--green-secondary);
    box-shadow: 0 0 0 3px rgba(74, 124, 42, 0.1);
}

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

/* Buttons - Schlichter und kleiner */
.btn {
    padding: 7px 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    text-decoration: none;
    display: inline-block;
    line-height: 1.5;
}

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

.btn-primary:hover {
    background: var(--green-secondary);
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(45, 80, 22, 0.2);
}

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

.btn-secondary:hover {
    background: var(--gray-dark);
}

.btn-danger {
    background: var(--danger);
    color: var(--white);
}

.btn-danger:hover {
    background: #c82333;
}

.btn-success {
    background: var(--success);
    color: var(--white);
}

.btn-success:hover {
    background: #218838;
}

.btn-sm {
    padding: 4px 10px;
    font-size: 12px;
}

/* Alerts */
.alert {
    padding: 12px 16px;
    border-radius: 4px;
    margin-bottom: 18px;
    font-size: 14px;
    border-left: 3px solid;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border-color: #f5c6cb;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border-color: #c3e6cb;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border-color: #bee5eb;
}

/* Cards */
.card {
    background: var(--white);
    padding: 24px;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    margin-bottom: 20px;
    border-left: 3px solid var(--green-primary);
}

.card h2 {
    color: var(--green-primary);
    margin-bottom: 16px;
    font-size: 20px;
    font-weight: 600;
}

.card h3 {
    color: var(--text-dark);
    margin-bottom: 12px;
    font-size: 18px;
    font-weight: 600;
}

/* Tables */
.table-container {
    overflow-x: auto;
    border-radius: 4px;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    border-radius: 4px;
    overflow: hidden;
}

table th,
table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid #e9ecef;
    font-size: 14px;
}

table th {
    background: var(--green-primary);
    color: var(--white);
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

table tr:hover {
    background: var(--green-bg);
}

table tr:last-child td {
    border-bottom: none;
}

/* Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

/* Device/Shelter Selection */
.device-selection,
.shelter-selection {
    margin-bottom: 20px;
    padding: 16px;
    background: var(--green-bg);
    border-radius: 4px;
    border: 1px solid var(--green-border);
}

.device-item,
.shelter-item {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
    align-items: flex-end;
}

.device-item select,
.shelter-item select {
    flex: 1;
}

.device-item input[type="number"],
.shelter-item input[type="number"] {
    width: 100px;
}

/* Info Window */
.info-window {
    background: #fff9e6;
    border: 1px solid #ffe082;
    border-left: 4px solid var(--warning);
    padding: 18px;
    border-radius: 4px;
    margin-bottom: 20px;
}

.info-window h3 {
    color: #856404;
    margin-bottom: 10px;
    font-size: 16px;
    font-weight: 600;
}

.info-window-content {
    color: #856404;
    line-height: 1.6;
    font-size: 14px;
}

/* Tasks */
.task-item {
    padding: 14px;
    background: var(--green-bg);
    border-left: 3px solid var(--green-secondary);
    border-radius: 4px;
    margin-bottom: 10px;
    transition: all 0.2s;
}

.task-item:hover {
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.task-item.completed {
    border-left-color: var(--success);
    opacity: 0.85;
}

.task-item h4 {
    margin-bottom: 6px;
    color: var(--text-dark);
    font-size: 15px;
    font-weight: 600;
}

.task-item p {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 10px;
}

.task-meta {
    font-size: 12px;
    color: var(--text-light);
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

/* Notes */
.note-item {
    padding: 16px;
    background: var(--green-bg);
    border-radius: 4px;
    margin-bottom: 12px;
    border-left: 3px solid var(--green-secondary);
}

.note-year {
    font-weight: 600;
    color: var(--green-primary);
    margin-bottom: 6px;
    font-size: 15px;
}

/* Badge */
.badge {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 3px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-success {
    background: var(--success);
    color: var(--white);
}

.badge-warning {
    background: var(--warning);
    color: #333;
}

.badge-danger {
    background: var(--danger);
    color: var(--white);
}

.badge-info {
    background: var(--info);
    color: var(--white);
}

/* Loading */
.loading {
    text-align: center;
    padding: 20px;
    color: var(--text-light);
}

/* Responsive */
@media (max-width: 768px) {
    body {
        padding: 12px;
    }
    
    .header {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }
    
    .header h1 {
        font-size: 20px;
    }
    
    .nav {
        padding: 10px 16px;
    }
    
    .nav ul {
        flex-direction: column;
        gap: 4px;
    }
    
    .nav a {
        display: block;
        padding: 8px 12px;
    }
    
    .auth-container {
        padding: 28px 24px;
        margin: 30px auto;
    }
    
    .card {
        padding: 18px;
    }
    
    .grid {
        grid-template-columns: 1fr;
    }
    
    .device-item,
    .shelter-item {
        flex-direction: column;
        align-items: stretch;
    }
    
    .device-item input[type="number"],
    .shelter-item input[type="number"] {
        width: 100%;
    }
    
    table {
        font-size: 13px;
    }
    
    table th,
    table td {
        padding: 8px;
    }
}

/* Subtile Animationen */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card {
    animation: fadeIn 0.3s ease-out;
}

/* Fokus-Stile für Barrierefreiheit */
button:focus,
a:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--green-secondary);
    outline-offset: 2px;
}