/* ========================================
   VERLEGEPLAN BODENPLATTEN - MODERN STYLE
   ======================================== */

/* === ROOT VARIABLES === */
:root {
    --primary-color: #667eea;
    --primary-hover: #5568d3;
    --success-color: #10b981;
    --success-hover: #059669;
    --warning-color: #f59e0b;
    --warning-hover: #d97706;
    --danger-color: #ef4444;
    --secondary-color: #6b7280;
    --secondary-hover: #4b5563;
    
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: #1e293b;
    
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    
    --border-color: #334155;
    --border-radius: 12px;
    --border-radius-lg: 16px;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* === BODY === */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
}

/* === HEADER === */
.header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.logo {
    height: 50px;
    width: auto;
    object-fit: contain;
}

.header h1 {
    flex: 1;
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.btn-home {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition);
}

.btn-home:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* === MAIN CONTAINER === */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* === SECTIONS === */
section {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

section h2 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

section h2 svg {
    color: var(--primary-color);
}

section h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* === DATA MANAGEMENT === */
.data-management {
    background: linear-gradient(135deg, var(--bg-card) 0%, #1a2332 100%);
}

.info-hint {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-top: 1.5rem;
    padding: 1rem;
    background: rgba(16, 185, 129, 0.1);
    border-left: 4px solid var(--success-color);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.info-hint svg {
    flex-shrink: 0;
    color: var(--success-color);
    margin-top: 0.125rem;
}

/* === FORM GRID === */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.form-section {
    background: var(--bg-secondary);
    padding: 1.25rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.form-section:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

/* === INPUT GROUPS === */
.input-group {
    margin-bottom: 1rem;
}

.input-group:last-child {
    margin-bottom: 0;
}

.input-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

input[type="number"],
input[type="text"],
select {
    width: 100%;
    padding: 0.75rem;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
}

input[type="number"]:focus,
input[type="text"]:focus,
select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

input[type="color"] {
    width: 100%;
    height: 45px;
    padding: 0.25rem;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

input[type="color"]:hover {
    border-color: var(--primary-color);
}

/* === CHECKBOX === */
.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    margin-bottom: 0.75rem;
    cursor: pointer;
    transition: var(--transition);
}

.checkbox-wrapper:hover {
    background: var(--border-color);
}

.checkbox-wrapper:last-child {
    margin-bottom: 0;
}

input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.checkbox-wrapper label {
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-secondary);
    user-select: none;
    margin: 0;
}

/* === BUTTONS === */
.btn-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn:active {
    transform: translateY(0) scale(0.98);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-success:hover {
    background: var(--success-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-warning:hover {
    background: var(--warning-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background: var(--secondary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* === CANVAS SECTION === */
.canvas-section {
    display: flex;
    justify-content: center;
    align-items: center;
    background: var(--bg-secondary);
    padding: 2rem;
    min-height: 400px;
    overflow-x: auto;
}

#canvas {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-xl);
}

/* === INFO SECTION === */
.info-section {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(167, 139, 250, 0.1));
    border-left: 4px solid var(--primary-color);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.info-section p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.info-section strong {
    color: var(--primary-color);
    font-weight: 600;
}

/* === CUT LIST === */
.cut-list {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(217, 119, 6, 0.1));
    border-left: 4px solid var(--warning-color);
}

.cut-list h3 {
    color: var(--warning-color);
}

.cut-visual {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.cut-tile {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 1.25rem;
    border: 2px solid var(--border-color);
    transition: var(--transition);
}

.cut-tile:hover {
    border-color: var(--warning-color);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.cut-tile-header {
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--warning-color);
    font-size: 0.875rem;
}

.cut-tile-canvas {
    width: 100%;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
}

/* === TILE USAGE === */
.tile-usage {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(5, 150, 105, 0.1));
    border-left: 4px solid var(--success-color);
}

.tile-usage h3 {
    color: var(--success-color);
}

.usage-item {
    padding: 1rem;
    margin: 0.75rem 0;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--border-color);
    font-size: 0.875rem;
    transition: var(--transition);
}

.usage-item:hover {
    background: var(--bg-tertiary);
    transform: translateX(4px);
}

.status-used {
    color: var(--success-color);
    font-weight: 600;
}

.status-waste {
    color: var(--danger-color);
    font-weight: 600;
}

/* === FOOTER === */
.footer {
    text-align: center;
    padding: 2rem 1.5rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* === TOAST NOTIFICATIONS === */
#toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    max-width: 350px;
}

.toast {
    background: var(--bg-card);
    border-left: 4px solid var(--success-color);
    border-radius: var(--border-radius);
    padding: 1rem 1.25rem;
    margin-bottom: 0.75rem;
    box-shadow: var(--shadow-xl);
    animation: slideIn 0.3s ease-out;
    color: var(--text-primary);
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    section {
        padding: 1rem;
        margin-bottom: 1rem;
    }
    
    .header-content {
        padding: 0.75rem 1rem;
        justify-content: center;
    }
    
    .logo {
        height: 40px;
    }
    
    .header h1 {
        font-size: 1.25rem;
        text-align: center;
        width: 100%;
    }
    
    .btn-home {
        width: 100%;
        justify-content: center;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .btn-grid {
        grid-template-columns: 1fr;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
    
    .cut-visual {
        grid-template-columns: 1fr;
    }
    
    #toast-container {
        left: 10px;
        right: 10px;
        max-width: none;
    }
    
    .canvas-section {
        padding: 1rem;
        overflow-x: scroll;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.125rem;
    }
    
    section h2 {
        font-size: 1.25rem;
    }
    
    .btn {
        font-size: 0.875rem;
        padding: 0.625rem 1rem;
    }
    
    .btn-large {
        font-size: 1rem;
        padding: 0.875rem 1.5rem;
    }
}

/* === PRINT === */
@media print {
    body {
        background: white;
    }
    
    .header,
    .data-management,
    .input-section,
    .action-section,
    .footer,
    #toast-container {
        display: none !important;
    }
    
    .canvas-section {
        box-shadow: none;
        background: white;
    }
    
    section {
        page-break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ddd;
    }
}