/* ===== Terrassendach Konfigurator ===== */
:root {
    --tdk-primary: #2c3e50;
    --tdk-accent: #e67e22;
    --tdk-accent-hover: #d35400;
    --tdk-bg: #f8f9fa;
    --tdk-card: #ffffff;
    --tdk-border: #dee2e6;
    --tdk-text: #2c3e50;
    --tdk-text-muted: #6c757d;
    --tdk-success: #27ae60;
    --tdk-radius: 8px;
    --tdk-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.tdk-konfigurator {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--tdk-text);
    line-height: 1.5;
    max-width: 1400px;
    margin: 0 auto;
    background: var(--tdk-bg);
    border-radius: var(--tdk-radius);
    overflow: hidden;
}
.tdk-konfigurator * { box-sizing: border-box; }

/* Loading */
.tdk-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 500px;
    color: var(--tdk-text-muted);
}
.tdk-spinner {
    width: 40px; height: 40px;
    border: 3px solid var(--tdk-border);
    border-top-color: var(--tdk-accent);
    border-radius: 50%;
    animation: tdk-spin 0.8s linear infinite;
}
@keyframes tdk-spin { to { transform: rotate(360deg); } }

/* Layout */
.tdk-layout {
    display: grid;
    grid-template-columns: 1fr 380px;
    min-height: 600px;
}

/* 3D Canvas */
.tdk-canvas-wrap {
    position: relative;
    background: linear-gradient(180deg, #87ceeb 0%, #e0e8f0 60%, #c8d6c0 100%);
    min-height: 500px;
}
.tdk-canvas-wrap canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
}
.tdk-canvas-toolbar {
    position: absolute;
    top: 12px;
    right: 12px;
    display: flex;
    gap: 8px;
    z-index: 10;
}
.tdk-canvas-btn {
    width: 36px; height: 36px;
    border: none;
    border-radius: 6px;
    background: rgba(255,255,255,0.9);
    cursor: pointer;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--tdk-shadow);
    transition: background 0.2s;
}
.tdk-canvas-btn:hover { background: #fff; }

/* Price display on canvas */
.tdk-price-floating {
    position: absolute;
    bottom: 16px;
    left: 16px;
    background: rgba(255,255,255,0.95);
    padding: 10px 16px;
    border-radius: var(--tdk-radius);
    box-shadow: var(--tdk-shadow);
    z-index: 10;
}
.tdk-price-floating .tdk-price-label { font-size: 12px; color: var(--tdk-text-muted); }
.tdk-price-floating .tdk-price-value { font-size: 24px; font-weight: 700; color: var(--tdk-primary); }
.tdk-price-floating .tdk-price-net { font-size: 11px; color: var(--tdk-text-muted); }

/* Sidebar */
.tdk-sidebar {
    background: var(--tdk-card);
    border-left: 1px solid var(--tdk-border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Tabs */
.tdk-tabs {
    display: flex;
    border-bottom: 2px solid var(--tdk-border);
    background: var(--tdk-bg);
    flex-shrink: 0;
}
.tdk-tab {
    flex: 1;
    padding: 12px 8px;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
    color: var(--tdk-text-muted);
    text-align: center;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all 0.2s;
}
.tdk-tab:hover { color: var(--tdk-text); }
.tdk-tab.active {
    color: var(--tdk-accent);
    border-bottom-color: var(--tdk-accent);
    background: var(--tdk-card);
}
.tdk-tab-icon { display: block; font-size: 20px; margin-bottom: 4px; }

/* Tab Content */
.tdk-tab-content {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}
.tdk-tab-panel { display: none; }
.tdk-tab-panel.active { display: block; }

/* Form Controls */
.tdk-group {
    margin-bottom: 20px;
}
.tdk-group-title {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--tdk-text-muted);
    margin-bottom: 10px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--tdk-border);
}

/* Slider */
.tdk-slider-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}
.tdk-slider-label {
    font-size: 13px;
    min-width: 100px;
    color: var(--tdk-text);
}
.tdk-slider {
    flex: 1;
    -webkit-appearance: none;
    height: 4px;
    border-radius: 2px;
    background: var(--tdk-border);
    outline: none;
}
.tdk-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px; height: 18px;
    border-radius: 50%;
    background: var(--tdk-accent);
    cursor: pointer;
    border: 2px solid #fff;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.tdk-slider::-moz-range-thumb {
    width: 18px; height: 18px;
    border-radius: 50%;
    background: var(--tdk-accent);
    cursor: pointer;
    border: 2px solid #fff;
}
.tdk-slider-value {
    font-size: 13px;
    font-weight: 600;
    min-width: 65px;
    text-align: right;
    color: var(--tdk-primary);
}

/* Radio cards */
.tdk-option-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin-bottom: 12px;
}
.tdk-option-card {
    border: 2px solid var(--tdk-border);
    border-radius: 6px;
    padding: 10px;
    cursor: pointer;
    text-align: center;
    font-size: 12px;
    transition: all 0.2s;
    background: var(--tdk-card);
}
.tdk-option-card:hover { border-color: var(--tdk-accent); }
.tdk-option-card.active {
    border-color: var(--tdk-accent);
    background: #fef5ed;
}
.tdk-option-card input { display: none; }

/* Color swatches */
.tdk-color-options {
    display: flex;
    gap: 10px;
    margin-bottom: 12px;
}
.tdk-color-option {
    position: relative;
    width: 40px; height: 40px;
    border-radius: 50%;
    cursor: pointer;
    border: 3px solid var(--tdk-border);
    transition: all 0.2s;
}
.tdk-color-option:hover { transform: scale(1.1); }
.tdk-color-option.active {
    border-color: var(--tdk-accent);
    box-shadow: 0 0 0 2px var(--tdk-accent);
}
.tdk-color-option input { display: none; }
.tdk-color-label {
    font-size: 11px;
    text-align: center;
    margin-top: 4px;
}

/* Toggle */
.tdk-toggle-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid #f0f0f0;
}
.tdk-toggle-info { font-size: 13px; }
.tdk-toggle-price { font-size: 11px; color: var(--tdk-text-muted); }
.tdk-toggle {
    position: relative;
    width: 44px; height: 24px;
    cursor: pointer;
}
.tdk-toggle input { display: none; }
.tdk-toggle-track {
    position: absolute;
    inset: 0;
    background: var(--tdk-border);
    border-radius: 12px;
    transition: background 0.2s;
}
.tdk-toggle input:checked + .tdk-toggle-track { background: var(--tdk-accent); }
.tdk-toggle-thumb {
    position: absolute;
    top: 2px; left: 2px;
    width: 20px; height: 20px;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
    transition: transform 0.2s;
}
.tdk-toggle input:checked ~ .tdk-toggle-thumb { transform: translateX(20px); }

/* Select */
.tdk-select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--tdk-border);
    border-radius: 6px;
    font-size: 13px;
    background: var(--tdk-card);
    color: var(--tdk-text);
    margin-bottom: 12px;
}

/* Side wall configurator */
.tdk-side-config {
    margin-bottom: 12px;
    padding: 10px;
    background: var(--tdk-bg);
    border-radius: 6px;
}
.tdk-side-label {
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 6px;
}

/* Summary */
.tdk-summary-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
    font-size: 13px;
}
.tdk-summary-table td {
    padding: 6px 0;
    border-bottom: 1px solid #f0f0f0;
}
.tdk-summary-table td:last-child {
    text-align: right;
    font-weight: 600;
}
.tdk-summary-total td {
    padding-top: 10px;
    border-top: 2px solid var(--tdk-primary);
    font-size: 16px;
    font-weight: 700;
}

/* Form */
.tdk-form-group {
    margin-bottom: 14px;
}
.tdk-form-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--tdk-text);
}
.tdk-form-input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--tdk-border);
    border-radius: 6px;
    font-size: 13px;
    transition: border-color 0.2s;
}
.tdk-form-input:focus {
    outline: none;
    border-color: var(--tdk-accent);
    box-shadow: 0 0 0 3px rgba(230,126,34,0.1);
}
.tdk-form-required::after { content: ' *'; color: #e74c3c; }

.tdk-btn {
    display: block;
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
}
.tdk-btn-primary {
    background: var(--tdk-accent);
    color: #fff;
}
.tdk-btn-primary:hover { background: var(--tdk-accent-hover); }
.tdk-btn-primary:disabled {
    background: var(--tdk-border);
    cursor: not-allowed;
}
.tdk-btn-secondary {
    background: var(--tdk-bg);
    color: var(--tdk-text);
    border: 1px solid var(--tdk-border);
    margin-top: 8px;
}

/* Success message */
.tdk-success {
    text-align: center;
    padding: 40px 20px;
}
.tdk-success-icon { font-size: 48px; color: var(--tdk-success); margin-bottom: 16px; }
.tdk-success h3 { margin: 0 0 8px; }
.tdk-success p { color: var(--tdk-text-muted); }

/* Error */
.tdk-error {
    background: #fdf0f0;
    color: #c0392b;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 13px;
    margin-bottom: 12px;
}

/* Responsive */
@media (max-width: 900px) {
    .tdk-layout {
        grid-template-columns: 1fr;
    }
    .tdk-canvas-wrap {
        min-height: 350px;
        max-height: 400px;
    }
    .tdk-sidebar {
        border-left: none;
        border-top: 1px solid var(--tdk-border);
    }
    .tdk-tab { padding: 10px 6px; font-size: 11px; }
    .tdk-tab-icon { font-size: 16px; }
}

@media (max-width: 480px) {
    .tdk-tab-content { padding: 14px; }
    .tdk-option-cards { grid-template-columns: 1fr; }
    .tdk-price-floating .tdk-price-value { font-size: 18px; }
}