/* Reset und Basis-Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    line-height: 1.6;
    font-size: 16px;
    font-weight: 400;
    color: #2c3e50;
}

/* App Container */
.app-container {
    max-width: 1400px;
    margin: 0 auto;
    background: white;
    border-radius: 24px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.08), 0 8px 16px rgba(0,0,0,0.04);
    overflow: hidden;
    backdrop-filter: blur(10px);
}

/* App Header */
.app-header {
    background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
    color: white;
    padding: 40px 30px;
    position: relative;
    overflow: hidden;
}

.app-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120"><path d="M0,0V46.29c47.79,22.2,103.59,32.17,158,28,70.36-5.37,136.33-33.31,206.8-37.5C438.64,32.43,512.34,53.67,583,72.05c69.27,18,138.3,24.88,209.4,13.08,36.15-6,69.85-17.84,104.45-29.34C989.49,25,1113-14.29,1200,52.47V0Z" opacity=".1" fill="%23ffffff"/></svg>') no-repeat bottom;
    background-size: cover;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    position: relative;
    z-index: 1;
}

.header-icon {
    font-size: 4rem;
    line-height: 1;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.2));
}

.header-text {
    text-align: left;
}

.header-text h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    font-weight: 700;
    letter-spacing: -0.025em;
}

.header-text p {
    font-size: 1.2em;
    opacity: 0.95;
    font-weight: 400;
    margin: 0;
}

/* Settings Button */
.settings-btn {
    background: rgba(255, 255, 255, 0.15);
    border: 2px solid rgba(255, 255, 255, 0.2);
    color: white;
    padding: 12px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 48px;
    height: 48px;
}

.settings-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.settings-icon {
    font-size: 1.5rem;
    line-height: 1;
    animation: rotate 8s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.settings-btn:hover .settings-icon {
    animation-duration: 0.5s;
}

.back-btn {
    position: absolute;
    top: 20px;
    left: 20px;
    background: rgba(255,255,255,0.2);
    color: white;
    padding: 10px 15px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.back-btn:hover {
    background: rgba(255,255,255,0.3);
    transform: translateY(-2px);
}

/* Main Content */
.main-content {
    padding: 30px;
}

/* Sections */
.section {
    margin-bottom: 40px;
    padding: 32px;
    border-radius: 20px;
    background: #ffffff;
    border: 1px solid #e9ecef;
    box-shadow: 0 4px 16px rgba(0,0,0,0.04);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(135deg, #3498db, #2980b9);
    border-radius: 0 4px 4px 0;
}

.section:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.08), 0 4px 16px rgba(0,0,0,0.04);
    border-color: #3498db;
}

/* Section Headers */
.section-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid #f1f3f4;
}

.section-icon {
    font-size: 2.5rem;
    line-height: 1;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.section-title h2 {
    color: #1a202c;
    margin: 0;
    font-size: 1.75rem;
    font-weight: 600;
    letter-spacing: -0.025em;
}

.section-subtitle {
    color: #718096;
    font-size: 0.95rem;
    margin: 4px 0 0 0;
    font-weight: 400;
}

.section h3 {
    color: #2d3748;
    margin: 20px 0 15px 0;
    font-size: 1.25em;
    font-weight: 600;
    letter-spacing: -0.015em;
}

/* Suggestions Section - spezielles Design */
.suggestions-section {
    background: linear-gradient(135deg, #1abc9c 0%, #16a085 100%);
    color: white;
    border-left: 5px solid #0f6f5c;
    display: none;
}

.suggestions-section h2 {
    color: white;
}

/* BigBox Controls */
.bigbox-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding: 15px;
    background: #ecf0f1;
    border-radius: 10px;
}

.add-bigbox-btn {
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
}

.add-bigbox-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
}

.add-bigbox-btn:disabled {
    background: #bdc3c7;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.bigbox-info {
    color: #7f8c8d;
    font-weight: 500;
}

.remove-bigbox-btn {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
    border: none;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
}

.remove-bigbox-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 3px 10px rgba(231, 76, 60, 0.3);
}

/* BEFFE Display */
.beffe-display {
    background: linear-gradient(135deg, #27ae60 0%, #2ecc71 100%);
    color: white;
    padding: 12px 15px;
    border-radius: 8px;
    text-align: center;
    font-weight: 600;
    margin-top: 15px;
}

.beffe-display.warning {
    background: linear-gradient(135deg, #f39c12 0%, #e67e22 100%);
}

.beffe-display.danger {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
}

.beffe-value {
    font-size: 1.2em;
    margin-bottom: 5px;
}

.beffe-label {
    font-size: 0.9em;
    opacity: 0.9;
}

/* BigBox Sections */
.bigbox-section {
    background: white;
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    border: 2px solid #ecf0f1;
    transition: border-color 0.3s;
}

.bigbox-section:hover {
    border-color: #3498db;
}

/* Input Grids - Modern Layout */
.input-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 24px;
}

.input-group {
    display: flex;
    flex-direction: column;
    position: relative;
}

.input-group label {
    font-weight: 500;
    margin-bottom: 8px;
    color: #374151;
    font-size: 0.875rem;
    letter-spacing: 0.025em;
    text-transform: uppercase;
    font-size: 0.75rem;
    opacity: 0.8;
}

.input-group input,
.input-group select {
    padding: 16px;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: #ffffff;
    box-shadow: 0 1px 3px rgba(0,0,0,0.02);
}

.input-group input:focus,
.input-group select:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 4px rgba(52, 152, 219, 0.1), 0 4px 12px rgba(0,0,0,0.08);
    transform: translateY(-1px);
}

/* Product Selection */
.product-selection {
    margin-bottom: 20px;
}

.product-selection select {
    width: 300px;
    font-size: 16px;
    font-weight: 500;
}

/* Buttons */
.button-section {
    display: flex;
    gap: 15px;
    margin: 30px 0;
    flex-wrap: wrap;
    justify-content: center;
}

.calculate-btn,
.export-btn,
.save-btn {
    border: none;
    padding: 15px 30px;
    font-size: 18px;
    font-weight: 600;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s;
    min-width: 200px;
}

/* Action Section */
.action-section {
    display: flex;
    justify-content: center;
    margin: 40px 0;
}

.calculate-btn {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
    border: none;
    padding: 20px 40px;
    font-size: 1.125rem;
    font-weight: 600;
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 320px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    box-shadow: 0 8px 24px rgba(239, 68, 68, 0.25);
    position: relative;
    overflow: hidden;
}

.calculate-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.6s;
}

.calculate-btn:hover::before {
    left: 100%;
}

.btn-subtitle {
    font-size: 0.875rem;
    font-weight: 400;
    opacity: 0.9;
}

.export-btn {
    background: linear-gradient(135deg, #27ae60 0%, #229954 100%);
    color: white;
}

.save-btn {
    background: linear-gradient(135deg, #f39c12 0%, #e67e22 100%);
    color: white;
}

.calculate-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(239, 68, 68, 0.35), 0 4px 16px rgba(239, 68, 68, 0.2);
    background: linear-gradient(135deg, #dc2626, #b91c1c);
}

/* Suggestion Cards */
.suggestion-card {
    background: rgba(255,255,255,0.1);
    padding: 20px;
    border-radius: 12px;
    margin: 15px 0;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    transition: all 0.3s;
    cursor: pointer;
}

.suggestion-card:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-2px);
}

.suggestion-card.selected {
    background: rgba(255,255,255,0.3);
    border-color: #f1c40f;
    box-shadow: 0 0 20px rgba(241, 196, 15, 0.3);
}

.suggestion-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.suggestion-title {
    font-size: 1.3em;
    font-weight: bold;
}

.suggestion-badge {
    background: rgba(255,255,255,0.3);
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.9em;
    font-weight: 600;
}

.suggestion-badge.best {
    background: #f1c40f;
    color: #2c3e50;
}

.suggestion-badge.cheap {
    background: #27ae60;
}

.suggestion-badge.dilution {
    background: #3498db;
    color: white;
}

.suggestion-badge.danger {
    background: #e74c3c;
    color: white;
}

.dilution-card {
    border-left: 4px solid #3498db;
}

.impossible-card {
    background: rgba(231, 76, 60, 0.1);
    border: 2px solid #e74c3c;
    cursor: default;
}

.impossible-card:hover {
    background: rgba(231, 76, 60, 0.15);
    transform: none;
}

.suggestion-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 10px;
    margin: 15px 0;
}

.detail-item {
    text-align: center;
}

.detail-value {
    font-size: 1.1em;
    font-weight: bold;
}

.detail-label {
    font-size: 0.9em;
    opacity: 0.8;
}

/* Final Recipe */
.final-recipe {
    background: rgba(255,255,255,0.1);
    padding: 20px;
    border-radius: 12px;
    margin-top: 20px;
    display: none;
}

.recipe-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin: 15px 0;
}

.recipe-item {
    background: rgba(255,255,255,0.1);
    padding: 15px;
    border-radius: 8px;
    text-align: center;
}

.use-recipe-btn {
    background: #f1c40f;
    color: #2c3e50;
    border: none;
    padding: 15px 30px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    margin-top: 20px;
    transition: all 0.3s;
}

.use-recipe-btn:hover {
    background: #f39c12;
    transform: translateY(-2px);
}

/* Error Message */
.error-message {
    background: #e74c3c;
    color: white;
    padding: 15px;
    border-radius: 8px;
    margin: 20px 0;
    display: none;
}

/* Results */
.results {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.result-card {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    border-left: 5px solid #27ae60;
    transition: transform 0.2s;
}

.result-card:hover {
    transform: translateY(-3px);
}

.result-card.warning {
    border-left-color: #f39c12;
}

.result-card.danger {
    border-left-color: #e74c3c;
}

.result-card h3 {
    color: #2c3e50;
    margin-bottom: 15px;
    font-size: 1.2em;
}

.result-value {
    font-size: 1.8em;
    font-weight: bold;
    color: #27ae60;
    margin-bottom: 10px;
}

.result-card.warning .result-value {
    color: #f39c12;
}

.result-card.danger .result-value {
    color: #e74c3c;
}

.result-card p {
    color: #7f8c8d;
    font-size: 0.95em;
}

/* Optimization Section */
.optimization-section {
    background: linear-gradient(135deg, #1abc9c 0%, #16a085 100%);
    color: white;
    border-left: 5px solid #0f6f5c;
}

.optimization-section h2 {
    color: white;
}

.mix-result {
    background: rgba(255,255,255,0.1);
    padding: 25px;
    border-radius: 12px;
    margin-top: 20px;
    backdrop-filter: blur(10px);
}

.mix-result h3 {
    color: white;
    margin-bottom: 20px;
}

/* Charts */
.charts-container {
    background: white;
    padding: 20px;
    border-radius: 12px;
    margin-top: 20px;
    text-align: center;
}

/* Status Classes */
.status-ok { 
    color: #27ae60; 
    font-weight: bold; 
}

.status-warning { 
    color: #f39c12; 
    font-weight: bold; 
}

.status-danger { 
    color: #e74c3c; 
    font-weight: bold; 
}

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.data-table th,
.data-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #ecf0f1;
}

.data-table th {
    background: #34495e;
    color: white;
    font-weight: 600;
}

.data-table tr:hover {
    background: #f8f9fa;
}

/* Progress Bars */
.progress-bar {
    width: 100%;
    height: 10px;
    background: #ecf0f1;
    border-radius: 5px;
    overflow: hidden;
    margin: 10px 0;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #27ae60, #2ecc71);
    border-radius: 5px;
    transition: width 0.5s ease;
}

/* Enhanced Responsive Design */
@media (max-width: 1024px) {
    .header-content {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    .header-text {
        text-align: center;
    }
    
    .input-grid {
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    }
}

@media (max-width: 768px) {
    body {
        padding: 12px;
    }
    
    .app-container {
        border-radius: 16px;
    }
    
    .header-text h1 { 
        font-size: 2rem; 
    }
    
    .header-icon {
        font-size: 3rem;
    }
    
    .input-grid { 
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .section {
        padding: 20px;
        margin-bottom: 24px;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        text-align: left;
    }
    
    .calculate-btn {
        min-width: 280px;
        padding: 16px 32px;
    }
    
    .suggestion-details {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .recipe-grid {
        grid-template-columns: 1fr;
    }
    
    .main-content {
        padding: 16px;
    }
    
    .mixture-stats {
        grid-template-columns: 1fr;
    }
    
    .material-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .remove-material-btn {
        align-self: flex-end;
    }
}

@media (max-width: 480px) {
    body {
        padding: 8px;
    }
    
    .app-header {
        padding: 24px 16px;
    }
    
    .header-text h1 {
        font-size: 1.75rem;
    }
    
    .header-text p {
        font-size: 1rem;
    }
    
    .header-icon {
        font-size: 2.5rem;
    }
    
    .main-content {
        padding: 12px;
    }
    
    .section {
        padding: 16px;
        border-radius: 12px;
    }
    
    .section-icon {
        font-size: 2rem;
    }
    
    .calculate-btn {
        min-width: auto;
        width: 100%;
        padding: 14px 24px;
        font-size: 1rem;
    }
    
    .add-material-btn {
        padding: 14px 24px;
        font-size: 0.95rem;
    }
    
    .input-group input,
    .input-group select {
        padding: 14px;
        font-size: 16px;
    }
    
    .material-card {
        padding: 16px;
    }
    
    .total-mixture {
        padding: 16px;
    }
    
    .recipe-actions {
        flex-direction: column;
        gap: 12px;
    }
    
    .export-pdf-btn, 
    .use-recipe-btn {
        width: 100%;
        min-width: auto;
    }
}

/* Animations */
@keyframes fadeIn {
    from { 
        opacity: 0; 
        transform: translateY(20px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

.section {
    animation: fadeIn 0.5s ease-out;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f8fafc;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #3498db, #2980b9);
    border-radius: 4px;
    border: 1px solid rgba(255,255,255,0.1);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #2980b9, #1f5f99);
}

/* Focus Management & Accessibility */
*:focus {
    outline: 2px solid #3498db;
    outline-offset: 2px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .section {
        border: 2px solid #000;
    }
    
    .material-card {
        border: 2px solid #000;
    }
    
    .input-group input,
    .input-group select {
        border: 2px solid #000;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    body {
        background: linear-gradient(135deg, #1a202c 0%, #2d3748 100%);
    }
    
    .app-container {
        background: #2d3748;
        color: #e2e8f0;
    }
    
    .section {
        background: #374151;
        border-color: #4a5568;
    }
    
    .material-card {
        background: #374151;
        border-color: #4a5568;
    }
    
    .input-group input,
    .input-group select {
        background: #4a5568;
        border-color: #6b7280;
        color: #e2e8f0;
    }
    
    .input-group label {
        color: #cbd5e0;
    }
    
    .section-title h2 {
        color: #f7fafc;
    }
    
    .section-subtitle {
        color: #a0aec0;
    }
}

/* Material Cards - Modern Design */
.material-card {
    background: #ffffff;
    border: 2px solid #f1f3f4;
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0,0,0,0.02);
    position: relative;
    overflow: hidden;
}

.material-card:hover {
    border-color: #3498db;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.06), 0 2px 8px rgba(0,0,0,0.04);
}

.material-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #3498db, #2ecc71);
    border-radius: 16px 16px 0 0;
}

.material-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid #f1f3f4;
}

.material-header h3 {
    color: #1a202c;
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
    letter-spacing: -0.015em;
}

.remove-material-btn {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    border: none;
    color: white;
    padding: 8px 12px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 4px rgba(239, 68, 68, 0.2);
}

.remove-material-btn:hover {
    background: linear-gradient(135deg, #dc2626, #b91c1c);
    transform: translateY(-1px) scale(1.02);
    box-shadow: 0 4px 8px rgba(239, 68, 68, 0.3);
}

.add-material-btn {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    border: none;
    padding: 16px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 12px;
    cursor: pointer;
    margin: 24px 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.25);
}

.btn-icon {
    font-size: 1.1em;
    line-height: 1;
}

.btn-text {
    font-weight: 600;
    letter-spacing: 0.025em;
}

/* Neue Styles für PDF-Export */
.recipe-actions {
    display: flex;
    gap: 15px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.export-pdf-btn {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 200px;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
}

.export-pdf-btn:hover {
    background: linear-gradient(135deg, #c0392b 0%, #a93226 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(231, 76, 60, 0.4);
}

.export-pdf-btn:active {
    transform: translateY(0);
}

/* Optimierungs-spezifische Styles */
.optimization-card {
    border-left: 4px solid #3498db;
}

.optimization-card:hover {
    border-left-color: #2980b9;
}

.optimization-details {
    margin: 15px 0;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
}

.water-highlight {
    font-size: 18px;
    font-weight: bold;
    color: #3498db;
    margin-bottom: 10px;
}

.material-addition {
    font-size: 14px;
    color: #666;
    margin-top: 5px;
}

/* Responsive Design für Buttons */
@media (max-width: 768px) {
    .recipe-actions {
        flex-direction: column;
    }
    
    .export-pdf-btn, .use-recipe-btn {
        width: 100%;
        min-width: auto;
    }
}

.add-material-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.35), 0 4px 12px rgba(16, 185, 129, 0.2);
    background: linear-gradient(135deg, #059669, #047857);
}

.total-mixture {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
    padding: 24px;
    border-radius: 16px;
    margin-top: 24px;
    box-shadow: 0 4px 16px rgba(245, 158, 11, 0.25);
    position: relative;
    overflow: hidden;
}

.total-mixture::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23ffffff" stroke-width="0.5" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    pointer-events: none;
}

.total-mixture h3 {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-align: center;
    letter-spacing: -0.025em;
    position: relative;
    z-index: 1;
}

.mixture-icon {
    font-size: 1.5em;
    margin-right: 8px;
    vertical-align: middle;
}

.mixture-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    position: relative;
    z-index: 1;
}

.stat-item {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 12px 16px;
    border-radius: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

.stat-label {
    font-weight: 500;
    opacity: 0.95;
    font-size: 0.9rem;
}

.stat-value {
    font-weight: 700;
    font-size: 1.125rem;
    letter-spacing: -0.025em;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .mixture-stats {
        grid-template-columns: 1fr;
    }
    
    .material-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .remove-material-btn {
        align-self: flex-end;
    }
}

/* Recipe Specification Display */
.recipe-specs {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 10px;
    margin: 10px 0;
    border-left: 4px solid #3498db;
}

.recipe-specs h5 {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 1.1em;
}

.spec-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 8px;
}

.spec-item {
    background: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.9em;
    text-align: center;
    border: 1px solid #e9ecef;
}

/* Multi-Material Suggestion Cards */
.multi-material-card {
    border-left: 4px solid #9b59b6;
}

.multi-materials-list {
    background: #f8f9fa;
    padding: 12px;
    border-radius: 8px;
    margin: 10px 0;
}

.multi-material-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
    border-bottom: 1px solid #e9ecef;
}

.multi-material-item:last-child {
    border-bottom: none;
}

.material-name {
    font-weight: 600;
    color: #2c3e50;
}

.material-amount {
    color: #7f8c8d;
    font-size: 0.9em;
}

.suggestion-badge.multi {
    background: linear-gradient(135deg, #9b59b6, #8e44ad);
}

/* Water Addition Cards */
.water-addition-card {
    border-left: 4px solid #3498db;
}

.suggestion-badge.water {
    background: linear-gradient(135deg, #3498db, #2980b9);
}

/* Downsizing Optimization Badges */
.suggestion-badge.downsize {
    background: linear-gradient(135deg, #e67e22, #d35400);
    color: white;
}

/* Material Addition/Reduction Styling */
.material-addition.reduction {
    background: rgba(231, 76, 60, 0.1);
    border-left: 3px solid #e74c3c;
    color: #c0392b;
    font-weight: 600;
}

.material-addition.addition {
    background: rgba(46, 204, 113, 0.1);
    border-left: 3px solid #2ecc71;
    color: #27ae60;
    font-weight: 600;
}

/* Settings Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    animation: fadeIn 0.3s ease-out forwards;
}

.modal-content {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 900px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    transform: translateY(20px) scale(0.95);
    animation: modalIn 0.3s ease-out 0.1s forwards;
}

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

@keyframes modalIn {
    to {
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 32px;
    border-bottom: 2px solid #f1f3f4;
    background: linear-gradient(135deg, #f8fafc, #e2e8f0);
}

.modal-header h2 {
    margin: 0;
    color: #1a202c;
    font-size: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.modal-close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #718096;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
}

.modal-close-btn:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    transform: scale(1.1);
}

/* Modal Tabs */
.modal-tabs {
    display: flex;
    background: #f8fafc;
    border-bottom: 2px solid #e2e8f0;
    overflow-x: auto;
}

.tab-btn {
    background: none;
    border: none;
    padding: 16px 24px;
    font-size: 0.95rem;
    font-weight: 500;
    color: #64748b;
    cursor: pointer;
    transition: all 0.3s;
    border-bottom: 3px solid transparent;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tab-btn:hover {
    background: rgba(59, 130, 246, 0.05);
    color: #3b82f6;
}

.tab-btn.active {
    color: #3b82f6;
    border-bottom-color: #3b82f6;
    background: rgba(59, 130, 246, 0.1);
}

/* Modal Body */
.modal-body {
    padding: 32px;
    max-height: 60vh;
    overflow-y: auto;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}


/* Edit Modal Styles */
.edit-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    z-index: 1100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: fadeIn 0.3s ease-out;
}

.edit-modal-content {
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    animation: modalIn 0.3s ease-out;
}

.edit-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 32px;
    border-bottom: 2px solid #f1f3f4;
    background: linear-gradient(135deg, #f8fafc, #e2e8f0);
}

.edit-modal-header h3 {
    margin: 0;
    color: #1a202c;
    font-size: 1.25rem;
    font-weight: 600;
}

.edit-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    padding: 32px;
}

.edit-field {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.edit-field label {
    font-weight: 500;
    color: #374151;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.edit-field input {
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s;
    background: white;
}

.edit-field input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    transform: translateY(-1px);
}

.edit-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 24px 32px;
    border-top: 2px solid #f1f3f4;
    background: #f8fafc;
}

/* Notification System */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    padding: 16px 24px;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.3);
    z-index: 1200;
    transform: translateX(100%);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 500;
    max-width: 400px;
}

.notification.show {
    transform: translateX(0);
    opacity: 1;
}

/* Responsive Edit Modal */
@media (max-width: 768px) {
    .edit-modal-content {
        margin: 10px;
        max-height: 95vh;
    }
    
    .edit-modal-header {
        padding: 16px 20px;
    }
    
    .edit-grid {
        grid-template-columns: 1fr;
        padding: 20px;
        gap: 16px;
    }
    
    .edit-actions {
        padding: 16px 20px;
        flex-direction: column;
    }
    
    .notification {
        right: 10px;
        left: 10px;
        max-width: none;
    }
}

/* Kalibrierung & Validierung Buttons */
.calibration-section {
    margin: 30px 0;
    padding: 20px 0;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.calibration-section h4 {
    color: #000000 !important;
    margin-bottom: 8px;
    font-size: 1.1rem;
    font-weight: 600;
}

.section-description {
    color: #333333 !important;
    font-size: 0.9rem;
    margin-bottom: 20px;
    line-height: 1.5;
}

.calibration-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.calibration-btn {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    color: white;
    padding: 16px 20px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 12px;
    text-align: left;
    width: 100%;
}

.calibration-btn:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.2);
    transform: translateY(-1px);
}

.calibration-btn.validate:hover {
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.3);
}

.calibration-btn.analyze:hover {
    background: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.3);
}

.calibration-btn.auto:hover {
    background: rgba(251, 146, 60, 0.1);
    border-color: rgba(251, 146, 60, 0.3);
}

.calibration-btn .btn-icon {
    font-size: 1.5em;
    min-width: 32px;
}

.calibration-btn .btn-text {
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 2px;
    color: #000000 !important;
}

.calibration-btn .btn-subtitle {
    font-size: 0.85rem;
    color: #333333 !important;
    font-weight: normal;
}

.calibration-btn .btn-content {
    display: flex;
    flex-direction: column;
}

@media (max-width: 768px) {
    .calibration-buttons {
        gap: 10px;
    }

    .calibration-btn {
        padding: 14px 16px;
    }

    .calibration-btn .btn-text {
        font-size: 0.95rem;
    }

    .calibration-btn .btn-subtitle {
        font-size: 0.8rem;
    }
}

/* Gewürz-Info Styling */
.stat-item.spice-info {
    background: rgba(251, 146, 60, 0.1);
    border-left: 3px solid #fb923c;
    padding-left: 12px;
}

.stat-item.spice-info .stat-label {
    color: #fb923c;
    font-weight: 600;
}

.stat-item.spice-info .stat-value {
    color: #fb923c;
    font-weight: 700;
}

/* Erweiterte Gewürz-Sektion */
.advanced-spices-section {
    margin: 30px 0;
    padding: 20px 0;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.advanced-spices-section h4 {
    color: #fff;
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.spices-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin: 20px 0;
}

.spice-item {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr;
    gap: 10px;
    align-items: center;
    background: rgba(255,255,255,0.05);
    padding: 12px 16px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.1);
}

.spice-item label {
    color: #fb923c;
    font-weight: 600;
    font-size: 0.9rem;
}

.spice-item span {
    color: rgba(255,255,255,0.7);
    font-size: 0.85rem;
    text-align: center;
}

.spice-item input {
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.9rem;
    width: 80px;
}

.spice-item input:focus {
    outline: none;
    border-color: #fb923c;
    background: rgba(251, 146, 60, 0.1);
}

.spices-summary {
    text-align: center;
    margin-top: 20px;
    padding: 12px;
    background: rgba(251, 146, 60, 0.1);
    border-radius: 8px;
    border: 1px solid rgba(251, 146, 60, 0.3);
    color: #fb923c;
}

.checkbox-label {
    color: rgba(255,255,255,0.8);
    margin-left: 8px;
    font-size: 0.9rem;
}

.setting-item input[type="checkbox"] {
    accent-color: #fb923c;
    width: auto;
    margin-right: 5px;
}

@media (max-width: 768px) {
    .spice-item {
        grid-template-columns: 1fr;
        gap: 8px;
        text-align: center;
    }

    .spice-item input {
        width: 100%;
        max-width: 120px;
        margin: 0 auto;
    }
}