/* Root Variables */
:root {
    --primary-color: #F7941D;
    --primary-hover: #e8850f;
    --secondary-color: #2C3E50;
    --accent-color: #3498DB;
    --success-color: #4CAF50;
    --success-hover: #43a047;
    --danger-color: #f44336;
    --text-dark: #333333;
    --text-gray: #666666;
    --text-light: #999999;
    --bg-white: #ffffff;
    --bg-light: #f5f5f5;
    --bg-gray: #e0e0e0;
    --border-color: #dddddd;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.15);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
}

/* Header */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
    height: 70px;
    background: var(--secondary-color, var(--text-dark));
    color: white;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 700;
}

.logo i {
    color: var(--primary-color);
    font-size: 28px;
}

.logo .accent {
    color: var(--accent-color, var(--primary-color));
}

.nav {
    display: flex;
    gap: 30px;
}

.nav-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 8px 0;
    border-bottom: 2px solid transparent;
    transition: all 0.3s;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.order-btn {
    background: var(--primary-color);
    border: none;
    padding: 12px 24px;
    border-radius: 4px;
    color: white;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background 0.3s;
}

.order-btn:hover {
    background: var(--primary-hover);
}

/* Progress Bar */
.progress-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 15px 30px;
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    gap: 10px;
}

.step {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-light);
    font-size: 14px;
}

.step.active {
    color: var(--text-dark);
    font-weight: 500;
}

.step.active .step-text {
    color: var(--primary-color);
}

.step i {
    font-size: 12px;
    color: var(--text-light);
}

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

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

h1 {
    font-size: 32px;
    font-weight: 300;
    margin-bottom: 25px;
    color: var(--text-dark);
}

/* Selection Bar */
.selection-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.select-all {
    display: flex;
    align-items: center;
    gap: 10px;
}

.select-all input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.select-all label {
    color: var(--text-gray);
    cursor: pointer;
}

.action-buttons {
    display: flex;
    gap: 15px;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border-radius: 4px;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s;
    border: none;
    font-size: 14px;
}

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

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

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

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

.btn-outline {
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

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

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

.btn-large {
    padding: 18px 36px;
    font-size: 16px;
    font-weight: 700;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-icon {
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    padding: 5px;
    font-size: 16px;
    transition: color 0.3s;
}

.btn-icon:hover {
    color: var(--text-dark);
}

/* Parts Header */
.parts-header {
    display: grid;
    grid-template-columns: 400px 1fr 150px 150px;
    gap: 20px;
    padding: 15px 60px;
    background: var(--bg-light);
    border-radius: 4px 4px 0 0;
    font-weight: 500;
    color: var(--text-gray);
    font-size: 14px;
}

/* Part Card */
.part-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-bottom: 15px;
    box-shadow: var(--shadow);
}

.part-checkbox {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.part-checkbox input {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.part-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px 12px 50px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-light);
}

.part-filename {
    font-weight: 500;
    color: var(--text-dark);
}

.delete-part {
    color: var(--danger-color);
}

.delete-part:hover {
    color: #d32f2f;
}

.part-content {
    display: grid;
    grid-template-columns: 220px 200px 1fr 120px 150px;
    gap: 15px;
    padding: 20px;
    align-items: start;
    position: relative;
}

.part-preview {
    text-align: center;
}

.part-canvas {
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: white;
    max-width: 100%;
}

.part-status {
    margin-top: 10px;
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.part-status.success {
    color: var(--success-color);
}

.part-status.error {
    color: var(--danger-color);
}

.part-details,
.part-material {
    font-size: 14px;
}

.detail-row {
    margin-bottom: 10px;
}

.detail-label {
    display: block;
    color: var(--text-light);
    font-size: 12px;
    margin-bottom: 2px;
}

.detail-value {
    color: var(--text-dark);
    font-weight: 500;
}

.process-badge {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.more-details {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 13px;
    display: inline-block;
    margin-top: 10px;
}

.more-details:hover {
    text-decoration: underline;
}

.part-quantity {
    text-align: center;
}

.part-quantity label {
    display: block;
    color: var(--text-light);
    font-size: 12px;
    margin-bottom: 8px;
}

.quantity-input {
    width: 80px;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    text-align: center;
    font-size: 16px;
    font-weight: 500;
}

.quantity-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.part-price {
    text-align: right;
}

.price-total {
    display: block;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-dark);
}

.price-unit {
    display: block;
    font-size: 13px;
    color: var(--text-light);
    margin-top: 5px;
}

/* Drop Zone */
.drop-zone {
    border: 2px dashed var(--primary-color);
    border-radius: 8px;
    padding: 40px;
    text-align: center;
    background: rgba(247, 148, 29, 0.05);
    cursor: pointer;
    transition: all 0.3s;
    margin: 20px 0;
}

.drop-zone:hover,
.drop-zone.dragover {
    background: rgba(247, 148, 29, 0.1);
    border-color: var(--primary-hover);
}

.drop-zone-content i {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.drop-zone-content p {
    font-size: 18px;
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.drop-zone-content span {
    font-size: 14px;
    color: var(--text-light);
}

/* Quote Section */
.quote-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 25px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin: 20px 0;
}

.quote-info p {
    margin: 0;
    font-size: 14px;
    color: var(--text-gray);
}

.quote-info p:first-child {
    color: var(--text-dark);
}

/* Summary Section */
.summary-section {
    display: flex;
    align-items: flex-start;
    justify-content: flex-end;
    gap: 30px;
    margin-top: 30px;
}

.summary-box {
    background: var(--bg-light);
    padding: 20px 30px;
    border-radius: 4px;
    min-width: 300px;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.summary-row span:first-child {
    font-weight: 500;
    color: var(--text-dark);
}

.summary-price {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
}

.summary-note {
    font-size: 12px;
    color: var(--text-light);
    margin-top: 8px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 8px;
    max-width: 500px;
    width: 90%;
    box-shadow: var(--shadow-lg);
}

.modal-large {
    max-width: 900px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 25px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 20px;
    font-weight: 500;
}

.modal-close {
    background: none;
    border: none;
    font-size: 28px;
    color: var(--text-light);
    cursor: pointer;
    line-height: 1;
}

.modal-close:hover {
    color: var(--text-dark);
}

.modal-body {
    padding: 25px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 15px;
    padding: 20px 25px;
    border-top: 1px solid var(--border-color);
}

/* Upload Progress */
.upload-progress {
    text-align: center;
    padding: 40px;
}

.progress-ring {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

/* Config Modal */
.config-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.config-preview {
    text-align: center;
}

#partCanvas {
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: #fafafa;
    max-width: 100%;
}

.measurements {
    margin-top: 10px;
    font-size: 14px;
    color: var(--text-gray);
}

.config-options {
    padding: 10px 0;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
    color: var(--text-dark);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
}

.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 400;
    cursor: pointer;
}

.checkbox-group input {
    width: 16px;
    height: 16px;
}

/* Responsive */
@media (max-width: 1200px) {
    .part-content {
        grid-template-columns: 1fr 1fr;
    }

    .parts-header {
        display: none;
    }
}

@media (max-width: 768px) {
    .header {
        flex-wrap: wrap;
        height: auto;
        padding: 15px;
        gap: 15px;
    }

    .nav {
        order: 3;
        width: 100%;
        justify-content: center;
        gap: 15px;
    }

    .progress-bar {
        flex-wrap: wrap;
    }

    .part-content {
        grid-template-columns: 1fr;
    }

    .config-grid {
        grid-template-columns: 1fr;
    }

    .summary-section {
        flex-direction: column;
        align-items: stretch;
    }

    .selection-bar {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
}

/* Loading Animation */
@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.fa-spin {
    animation: spin 1s linear infinite;
}

/* Toast Notifications */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--text-dark);
    color: white;
    padding: 15px 25px;
    border-radius: 4px;
    box-shadow: var(--shadow-lg);
    z-index: 1100;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

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

.toast.error {
    background: var(--danger-color);
}

/* Dropdown Button */
.btn-dropdown {
    position: relative;
    display: inline-flex;
}

.btn-dropdown .btn:first-child {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

.btn-dropdown-toggle {
    border-top-left-radius: 0 !important;
    border-bottom-left-radius: 0 !important;
    border-left: 1px solid rgba(0,0,0,0.1) !important;
    padding: 10px 12px !important;
    min-width: auto !important;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-shadow: var(--shadow-md);
    min-width: 200px;
    z-index: 1000;
    display: none;
    margin-top: 4px;
}

.dropdown-menu.show {
    display: block;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    color: var(--text-dark);
    text-decoration: none;
    transition: background 0.2s;
    cursor: pointer;
}

.dropdown-item:hover {
    background: var(--bg-light);
}

.dropdown-item:first-child {
    border-radius: 6px 6px 0 0;
}

.dropdown-item:last-child {
    border-radius: 0 0 6px 6px;
}

.dropdown-item i {
    width: 16px;
    color: var(--primary-color);
}

/* Nesting Section */
.nesting-section {
    background: var(--bg-white);
    border-radius: 12px;
    margin-top: 30px;
    padding: 24px;
    box-shadow: var(--shadow);
    border: 2px solid #e3f2fd;
}

.nesting-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.nesting-header h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--secondary-color);
    font-size: 18px;
}

.nesting-header h3 i {
    color: var(--accent-color);
}

.nesting-badge {
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    background: #e0e0e0;
    color: #666;
}

.nesting-badge.calculating {
    background: #fff3e0;
    color: #e65100;
}

.nesting-badge.success {
    background: #e8f5e9;
    color: #2e7d32;
}

.nesting-badge.error {
    background: #ffebee;
    color: #c62828;
}

.nesting-info {
    margin-bottom: 20px;
}

.nesting-note {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 16px;
    background: #f5f5f5;
    border-radius: 8px;
    font-size: 13px;
    color: var(--text-gray);
}

.nesting-note i {
    color: var(--accent-color);
    margin-top: 2px;
}

.nesting-content {
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}

.nesting-stats {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.nesting-stats .stat-box {
    flex: 1;
    text-align: center;
    padding: 16px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 10px;
    border: 1px solid #dee2e6;
}

.nesting-stats .stat-value {
    display: block;
    font-size: 28px;
    font-weight: 700;
    color: var(--accent-color);
}

.nesting-stats .stat-label {
    display: block;
    font-size: 12px;
    color: var(--text-gray);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 4px;
}

.nesting-preview {
    background: #fafafa;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.nesting-preview img {
    max-width: 100%;
    max-height: 400px;
    object-fit: contain;
}

.nesting-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--text-gray);
}

.nesting-loading i {
    font-size: 32px;
    color: var(--accent-color);
}

@media (max-width: 768px) {
    .nesting-stats {
        flex-direction: column;
    }
}