/**
 * SB Laser Configurator - Industrial Design
 * ==========================================
 * Matching the React app styling with black/red theme
 */

/* ========================================
   Variables
   ======================================== */
.sb-configurator {
    /* Brand */
    --sb-brand-dark: #1A1A1A;
    --sb-brand: #32373C;
    --sb-brand-steel: #2D3339;

    /* Accent - Laser red */
    --sb-accent: #DC2626;
    --sb-accent-hover: #EF4444;
    --sb-accent-light: #FEF2F2;
    --sb-accent-glow: rgba(220, 38, 38, 0.2);

    /* Surfaces */
    --sb-surface-primary: #FFFFFF;
    --sb-surface-secondary: #F5F7FA;
    --sb-surface-tertiary: #E8ECEF;
    --sb-surface-preview: #12151A;

    /* Text */
    --sb-text-primary: #1A1D21;
    --sb-text-secondary: #4B5563;
    --sb-text-muted: #9CA3AF;
    --sb-text-inverse: #FFFFFF;

    /* Border */
    --sb-border: #E5E7EB;
    --sb-border-dark: #D1D5DB;

    /* Functional */
    --sb-success: #10B981;
    --sb-warning: #F59E0B;
    --sb-error: #EF4444;

    /* Radius */
    --sb-radius: 6px;
    --sb-radius-lg: 8px;

    /* Shadows */
    --sb-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --sb-shadow-lg: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --sb-shadow-xl: 0 10px 15px -3px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --sb-transition-micro: 150ms ease-out;
    --sb-transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --sb-transition-smooth: 300ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Typography */
    --sb-font-heading: 'Oswald', 'Arial Narrow', sans-serif;
}

/* ========================================
   Layout
   ======================================== */
.sb-configurator {
    position: relative;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

.sb-layout {
    display: grid;
    grid-template-columns: 420px 1fr;
    gap: 1.5rem;
    max-width: 1280px;
    margin: 0 auto;
}

@media (max-width: 1024px) {
    .sb-layout {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   Loading Overlay
   ======================================== */
.sb-loading {
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.98);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 100;
    gap: 1rem;
}

.sb-loading.hidden {
    display: none;
}

.sb-loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--sb-border);
    border-top-color: var(--sb-accent);
    border-radius: 50%;
    animation: sb-spin 1s linear infinite;
}

@keyframes sb-spin {
    to { transform: rotate(360deg); }
}

/* ========================================
   Cards - Industrial Style
   ======================================== */
.sb-card,
.sb-preview-card {
    background: var(--sb-surface-primary);
    border-radius: var(--sb-radius-lg);
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: var(--sb-shadow);
}

.sb-card h3,
.sb-preview-card h3 {
    font-family: var(--sb-font-heading);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--sb-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin: 0 0 1rem;
}

/* ========================================
   Preview Section - Dark Industrial
   ======================================== */
.sb-preview-section {
    position: sticky;
    top: 90px;
    height: fit-content;
}

.sb-preview-card {
    background: var(--sb-surface-primary);
    border: 1px solid var(--sb-border);
}

.sb-preview-container {
    background: linear-gradient(180deg, var(--sb-surface-preview) 0%, #0A0C0F 100%);
    border-radius: var(--sb-radius);
    padding: 1.5rem;
    margin-bottom: 1rem;
    min-height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

/* Laser scan line effect */
.sb-preview-container::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg,
        transparent 0%,
        var(--sb-accent) 20%,
        var(--sb-accent) 80%,
        transparent 100%);
    opacity: 0.15;
    animation: sb-scan 4s ease-in-out infinite;
    pointer-events: none;
    z-index: 10;
}

@keyframes sb-scan {
    0%, 100% { top: 10%; opacity: 0.15; }
    50% { top: 80%; opacity: 0.3; }
}

/* Grid overlay effect */
.sb-preview-container::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 30px 30px;
    pointer-events: none;
    z-index: 0;
}

#sb-preview-svg {
    max-width: 100%;
    height: auto;
    position: relative;
    z-index: 1;
}

/* Corner markers - Technical drawing style */
.sb-preview-corner {
    position: absolute;
    width: 24px;
    height: 24px;
    border-color: var(--sb-accent);
    opacity: 0.5;
    z-index: 2;
    transition: opacity var(--sb-transition);
}

.sb-preview-container:hover .sb-preview-corner {
    opacity: 0.8;
}

.sb-corner-tl { top: 12px; left: 12px; border-left: 2px solid; border-top: 2px solid; }
.sb-corner-tr { top: 12px; right: 12px; border-right: 2px solid; border-top: 2px solid; }
.sb-corner-bl { bottom: 52px; left: 12px; border-left: 2px solid; border-bottom: 2px solid; }
.sb-corner-br { bottom: 52px; right: 12px; border-right: 2px solid; border-bottom: 2px solid; }

/* Material badge - Technical style */
.sb-material-badge {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.375rem 0.875rem;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(220, 38, 38, 0.3);
    border-radius: var(--sb-radius);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--sb-accent);
    letter-spacing: 0.02em;
    z-index: 5;
    display: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.sb-material-badge::before {
    content: '●';
    margin-right: 0.5rem;
    font-size: 0.5rem;
    animation: sb-blink 1.5s ease infinite;
}

@keyframes sb-blink {
    0%, 50%, 100% { opacity: 1; }
    25%, 75% { opacity: 0.3; }
}

.sb-material-badge.visible {
    display: block;
    animation: sb-fadeIn 0.3s ease;
}

.sb-preview-info {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    padding: 1rem 0;
    border-top: 1px solid var(--sb-border);
}

.sb-info-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    flex: 1;
    min-width: 80px;
}

.sb-info-label {
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--sb-text-muted);
}

.sb-info-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--sb-text-primary);
    transition: color var(--sb-transition);
}

/* Highlight value when updated */
.sb-info-value.sb-updated {
    color: var(--sb-accent);
}

/* ========================================
   Template Selection - Industrial Cards
   ======================================== */
.sb-template-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 0.75rem;
}

.sb-template-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 0.5rem;
    background: var(--sb-surface-primary);
    border: 2px solid var(--sb-border);
    border-radius: var(--sb-radius);
    cursor: pointer;
    transition: all var(--sb-transition);
    position: relative;
    overflow: hidden;
}

.sb-template-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(220, 38, 38, 0.05) 100%);
    opacity: 0;
    transition: opacity var(--sb-transition);
}

.sb-template-btn:hover {
    border-color: var(--sb-border-dark);
    transform: translateY(-2px);
    box-shadow: var(--sb-shadow-lg);
}

.sb-template-btn:hover::before {
    opacity: 1;
}

.sb-template-btn.active {
    border-color: var(--sb-accent);
    background: var(--sb-accent-light);
    box-shadow: 0 0 0 3px var(--sb-accent-glow);
}

.sb-template-btn.active::after {
    content: '';
    position: absolute;
    top: 6px;
    right: 6px;
    width: 8px;
    height: 8px;
    background: var(--sb-accent);
    border-radius: 50%;
    animation: sb-pulse 2s ease infinite;
}

@keyframes sb-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.sb-template-btn svg {
    width: 48px;
    height: 48px;
    color: var(--sb-brand);
    transition: color var(--sb-transition-micro), transform var(--sb-transition);
    position: relative;
    z-index: 1;
}

.sb-template-btn:hover svg {
    transform: scale(1.05);
}

.sb-template-btn.active svg {
    color: var(--sb-accent);
}

.sb-template-btn span {
    font-family: var(--sb-font-heading);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--sb-text-primary);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    position: relative;
    z-index: 1;
}

/* ========================================
   Form Elements - Industrial
   ======================================== */
.sb-form-group {
    margin-bottom: 1rem;
}

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

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

.sb-select {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.9375rem;
    border: 1px solid var(--sb-border);
    border-radius: var(--sb-radius);
    background: var(--sb-surface-primary);
    color: var(--sb-text-primary);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%234B5563' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    transition: border-color var(--sb-transition-micro);
}

.sb-select:focus {
    outline: none;
    border-color: var(--sb-accent);
    box-shadow: 0 0 0 3px var(--sb-accent-glow);
}

.sb-material-desc {
    font-size: 0.8125rem;
    color: var(--sb-text-muted);
    margin-top: 0.5rem;
    margin-bottom: 0;
}

/* Thickness Grid - Chip Style */
.sb-thickness-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.sb-thickness-btn {
    padding: 0.5rem 1rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
    font-weight: 500;
    background: var(--sb-surface-primary);
    border: 1px solid var(--sb-border);
    border-radius: var(--sb-radius);
    cursor: pointer;
    transition: all var(--sb-transition-micro);
}

.sb-thickness-btn:hover:not(:disabled) {
    border-color: var(--sb-border-dark);
}

.sb-thickness-btn.active {
    border-color: var(--sb-accent);
    background: var(--sb-accent-light);
    color: var(--sb-accent);
    font-weight: 600;
}

.sb-thickness-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    text-decoration: line-through;
}

.sb-thickness-hint {
    font-size: 0.75rem;
    color: var(--sb-warning);
    margin-top: 0.5rem;
    margin-bottom: 0;
}

/* ========================================
   Dimensions Grid
   ======================================== */
.sb-dimensions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 1rem;
}

.sb-dimension-field {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.sb-dimension-field label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--sb-text-primary);
}

.sb-dimension-input {
    position: relative;
}

.sb-dimension-input input {
    width: 100%;
    padding: 0.75rem 1rem;
    padding-right: 3rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9375rem;
    border: 1px solid var(--sb-border);
    border-radius: var(--sb-radius);
    background: var(--sb-surface-primary);
    color: var(--sb-text-primary);
}

.sb-dimension-input input:focus {
    outline: none;
    border-color: var(--sb-accent);
    box-shadow: 0 0 0 3px var(--sb-accent-glow);
}

.sb-dimension-input .sb-unit {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.875rem;
    color: var(--sb-text-muted);
    pointer-events: none;
}

/* Remove spinner from number inputs */
.sb-dimension-input input[type="number"]::-webkit-inner-spin-button,
.sb-dimension-input input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.sb-dimension-input input[type="number"] {
    -moz-appearance: textfield;
}

.sb-dimension-hint {
    font-size: 0.75rem;
    color: var(--sb-text-muted);
    margin-top: 0.5rem;
    margin-bottom: 0;
}

/* ========================================
   Options - Enhanced Industrial Style
   ======================================== */
#sb-options-card {
    border-left: 3px solid var(--sb-accent);
}

#sb-options-card.sb-options-visible {
    animation: sb-slideIn 0.3s ease;
}

@keyframes sb-slideIn {
    from { opacity: 0; transform: translateX(-10px); }
    to { opacity: 1; transform: translateX(0); }
}

.sb-options-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.sb-option-item {
    display: flex;
    align-items: flex-start;
    gap: 0.875rem;
    padding: 1rem 1.25rem;
    background: var(--sb-surface-secondary);
    border: 1px solid transparent;
    border-radius: var(--sb-radius);
    cursor: pointer;
    transition: all var(--sb-transition-micro);
    position: relative;
    overflow: hidden;
}

.sb-option-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: transparent;
    transition: background var(--sb-transition-micro);
}

.sb-option-item:hover {
    background: var(--sb-surface-tertiary);
    border-color: var(--sb-border);
}

.sb-option-item.sb-option-active {
    background: var(--sb-accent-light);
    border-color: var(--sb-accent);
}

.sb-option-item.sb-option-active::before {
    background: var(--sb-accent);
}

/* Custom Checkbox */
.sb-option-checkbox {
    position: relative;
    width: 22px;
    height: 22px;
    flex-shrink: 0;
    margin-top: 1px;
}

.sb-option-checkbox input[type="checkbox"] {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
    z-index: 2;
}

.sb-checkbox-mark {
    position: absolute;
    inset: 0;
    background: var(--sb-surface-primary);
    border: 2px solid var(--sb-border-dark);
    border-radius: 4px;
    transition: all var(--sb-transition-micro);
    display: flex;
    align-items: center;
    justify-content: center;
}

.sb-checkbox-mark svg {
    width: 12px;
    height: 12px;
    color: white;
    opacity: 0;
    transform: scale(0.5);
    transition: all var(--sb-transition-micro);
}

.sb-option-checkbox input:checked + .sb-checkbox-mark {
    background: var(--sb-accent);
    border-color: var(--sb-accent);
}

.sb-option-checkbox input:checked + .sb-checkbox-mark svg {
    opacity: 1;
    transform: scale(1);
}

.sb-option-checkbox input:focus + .sb-checkbox-mark {
    box-shadow: 0 0 0 3px var(--sb-accent-glow);
}

.sb-option-info {
    flex: 1;
    min-width: 0;
}

.sb-option-info strong {
    display: block;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--sb-text-primary);
    margin-bottom: 0.125rem;
}

.sb-option-info span {
    display: block;
    font-size: 0.8125rem;
    color: var(--sb-text-secondary);
    line-height: 1.3;
}

.sb-option-price {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--sb-accent);
    white-space: nowrap;
    background: rgba(220, 38, 38, 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.sb-option-item.sb-option-active .sb-option-price {
    background: var(--sb-accent);
    color: white;
}

/* ========================================
   Quantity & Price - Red Accent Card
   ======================================== */
/* Price card - red gradient background with white text */
.sb-card.sb-price-card {
    background: linear-gradient(135deg, #DC2626 0%, #B91C1C 100%) !important;
    color: #FFFFFF;
    border: none;
    position: relative;
    overflow: hidden;
}

/* Ensure all text in price card is white */
.sb-card.sb-price-card,
.sb-card.sb-price-card *:not(.sb-discount-row):not(.sb-discount-row *):not(.sb-highlight):not(.sb-highlight *) {
    color: #FFFFFF;
}

/* Exception for green discount text */
.sb-card.sb-price-card .sb-discount-row,
.sb-card.sb-price-card .sb-discount-row *,
.sb-card.sb-price-card .sb-price-line.sb-highlight,
.sb-card.sb-price-card .sb-price-line.sb-highlight * {
    color: #86EFAC;
}

.sb-price-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
    pointer-events: none;
}

.sb-price-card h3 {
    color: rgba(255, 255, 255, 0.8);
}

.sb-quantity-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.sb-quantity-row label {
    font-weight: 500;
    color: var(--sb-text-inverse);
}

.sb-quantity-input {
    display: flex;
    align-items: center;
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--sb-radius);
    overflow: hidden;
}

.sb-qty-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--sb-text-inverse);
    font-size: 1.25rem;
    cursor: pointer;
    transition: background var(--sb-transition-micro);
}

.sb-qty-btn:hover {
    background: rgba(0, 0, 0, 0.2);
}

.sb-quantity-input input {
    width: 60px;
    height: 44px;
    text-align: center;
    font-family: 'JetBrains Mono', monospace;
    font-size: 1rem;
    font-weight: 600;
    background: transparent;
    border: none;
    color: var(--sb-text-inverse);
}

.sb-quantity-input input:focus {
    outline: none;
}

/* Discount Hint */
.sb-discount-hint {
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--sb-radius);
    padding: 0.625rem 1rem;
    font-size: 0.8125rem;
    margin-bottom: 1rem;
    text-align: center;
}

/* Price Summary */
.sb-price-summary {
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    margin-bottom: 0.75rem;
    color: var(--sb-text-inverse);
}

.sb-price-row {
    display: flex;
    justify-content: space-between;
    padding: 0.375rem 0;
    color: var(--sb-text-inverse);
}

.sb-price-row span {
    color: var(--sb-text-inverse);
}

.sb-price-unit {
    font-size: 0.9375rem;
    opacity: 0.9;
    color: var(--sb-text-inverse);
}

.sb-discount-row {
    display: flex;
    justify-content: space-between;
    padding: 0.375rem 0;
    font-size: 0.875rem;
    color: #86EFAC;
}

.sb-discount-row span {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    color: #86EFAC;
}

.sb-price-main {
    font-family: var(--sb-font-heading);
    font-size: 1.75rem;
    font-weight: 600;
    padding-top: 0.75rem;
    color: var(--sb-text-inverse);
}

.sb-price-main small {
    font-size: 0.75rem;
    font-weight: normal;
    opacity: 0.7;
    color: var(--sb-text-inverse);
}

/* Breakdown Toggle */
.sb-breakdown-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.8125rem;
    cursor: pointer;
    padding: 0.5rem 0;
    transition: color var(--sb-transition-micro);
}

.sb-breakdown-toggle span {
    color: inherit;
}

.sb-breakdown-toggle:hover {
    color: var(--sb-text-inverse);
}

.sb-breakdown-toggle:hover span {
    color: var(--sb-text-inverse);
}

.sb-breakdown-toggle svg {
    transition: transform var(--sb-transition);
}

.sb-breakdown-toggle.open svg {
    transform: rotate(180deg);
}

/* Price Breakdown */
.sb-price-breakdown {
    padding: 1rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 0.5rem;
    color: var(--sb-text-inverse);
}

.sb-price-line {
    display: flex;
    justify-content: space-between;
    font-size: 0.8125rem;
    padding: 0.25rem 0;
    opacity: 0.9;
    color: var(--sb-text-inverse);
}

.sb-price-line span {
    color: var(--sb-text-inverse);
}

.sb-price-line.sb-highlight {
    color: #86EFAC;
}

.sb-price-line.sb-highlight span {
    color: #86EFAC;
}

.sb-breakdown-geometry {
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.sb-breakdown-geometry .sb-price-line {
    opacity: 0.7;
    font-size: 0.75rem;
    color: var(--sb-text-inverse);
}

.sb-breakdown-geometry .sb-price-line span {
    color: var(--sb-text-inverse);
}

/* ========================================
   Buttons
   ======================================== */
.sb-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 600;
    border: none;
    border-radius: var(--sb-radius);
    cursor: pointer;
    transition: all var(--sb-transition-micro);
}

.sb-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.sb-btn-primary {
    background: var(--sb-accent);
    color: var(--sb-text-inverse);
}

.sb-btn-primary:hover:not(:disabled) {
    background: var(--sb-accent-hover);
    box-shadow: 0 0 20px var(--sb-accent-glow);
}

.sb-btn-secondary {
    background: var(--sb-surface-secondary);
    color: var(--sb-text-primary);
    border: 1px solid var(--sb-border);
}

.sb-btn-secondary:hover:not(:disabled) {
    background: var(--sb-border);
}

.sb-btn-dark {
    background: var(--sb-brand-dark);
    color: var(--sb-text-inverse);
    position: relative;
    overflow: hidden;
}

.sb-btn-dark::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.sb-btn-dark:hover:not(:disabled) {
    background: #000;
}

.sb-btn-dark:hover:not(:disabled)::before {
    transform: translateX(100%);
}

.sb-btn-success {
    background: var(--sb-success);
    color: var(--sb-text-inverse);
}

.sb-btn-lg {
    width: 100%;
    padding: 1rem 1.5rem;
    font-size: 1rem;
}

/* Success flash animation */
.sb-btn-success-flash {
    background: var(--sb-success) !important;
    animation: sb-successPulse 0.3s ease;
}

@keyframes sb-successPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

/* ========================================
   Floating Cart Button
   ======================================== */
.sb-cart-fab {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    background: var(--sb-brand-dark);
    color: var(--sb-text-inverse);
    border: none;
    border-radius: 50%;
    box-shadow: var(--sb-shadow-xl);
    cursor: pointer;
    z-index: 1000;
    transition: all var(--sb-transition);
}

.sb-cart-fab:hover {
    background: #000;
    transform: scale(1.05);
}

.sb-cart-fab.sb-cart-bounce {
    animation: sb-cartBounce 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes sb-cartBounce {
    0%, 100% { transform: scale(1); }
    25% { transform: scale(1.2); }
    50% { transform: scale(0.95); }
    75% { transform: scale(1.1); }
}

.sb-cart-count {
    position: absolute;
    top: -5px;
    right: -5px;
    min-width: 24px;
    height: 24px;
    background: var(--sb-accent);
    color: var(--sb-text-inverse);
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 6px;
}

/* ========================================
   Drawer (Cart)
   ======================================== */
.sb-drawer {
    position: fixed;
    inset: 0;
    z-index: 2000;
    visibility: hidden;
    opacity: 0;
    transition: visibility 0s 0.3s, opacity 0.3s;
}

.sb-drawer.open {
    visibility: visible;
    opacity: 1;
    transition: visibility 0s, opacity 0.3s;
}

.sb-drawer-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
}

.sb-drawer-content {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    max-width: 450px;
    background: var(--sb-surface-primary);
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 0.3s ease;
}

.sb-drawer.open .sb-drawer-content {
    transform: translateX(0);
}

.sb-drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--sb-border);
    background: var(--sb-brand-dark);
    color: var(--sb-text-inverse);
}

.sb-drawer-header h2 {
    margin: 0;
    font-size: 1.25rem;
    color: var(--sb-text-inverse);
}

.sb-drawer-close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    font-size: 1.5rem;
    color: var(--sb-text-inverse);
    cursor: pointer;
    border-radius: var(--sb-radius);
    opacity: 0.7;
}

.sb-drawer-close:hover {
    opacity: 1;
}

.sb-drawer-body {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
}

.sb-drawer-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--sb-border);
    background: var(--sb-surface-secondary);
}

/* Cart Items */
.sb-cart-empty {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--sb-text-muted);
}

.sb-cart-empty svg {
    width: 64px;
    height: 64px;
    margin-bottom: 1rem;
    opacity: 0.3;
}

.sb-cart-item {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    padding-right: 2.5rem;
    background: var(--sb-surface-primary);
    border: 1px solid var(--sb-border);
    border-radius: var(--sb-radius);
    margin-bottom: 0.75rem;
    position: relative;
}

.sb-cart-item-preview {
    width: 80px;
    height: 80px;
    background: var(--sb-surface-preview);
    border-radius: var(--sb-radius);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sb-cart-item-preview svg {
    width: 60px;
    height: 60px;
    color: #666;
}

.sb-cart-item-details {
    flex: 1;
    min-width: 0;
}

.sb-cart-item-name {
    font-weight: 600;
    color: var(--sb-text-primary);
    margin-bottom: 0.25rem;
}

.sb-cart-item-spec {
    font-size: 0.8125rem;
    color: var(--sb-text-secondary);
    line-height: 1.4;
}

.sb-cart-item-options {
    font-size: 0.75rem;
    color: var(--sb-text-muted);
    margin-top: 0.25rem;
}

.sb-cart-item-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 0.5rem;
}

.sb-cart-item-qty {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sb-cart-item-qty button {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--sb-surface-secondary);
    border: 1px solid var(--sb-border);
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: background var(--sb-transition-micro);
}

.sb-cart-item-qty button:hover {
    background: var(--sb-border);
}

.sb-cart-item-qty span {
    min-width: 24px;
    text-align: center;
    font-weight: 600;
    font-family: 'JetBrains Mono', monospace;
}

.sb-cart-item-price {
    font-weight: 600;
    color: var(--sb-accent);
    font-variant-numeric: tabular-nums;
}

.sb-cart-item-remove {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: transparent;
    border: none;
    color: var(--sb-text-muted);
    cursor: pointer;
    padding: 0.25rem;
    font-size: 1.25rem;
    line-height: 1;
    opacity: 0.6;
    transition: all var(--sb-transition-micro);
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
}

.sb-cart-item-remove:hover {
    opacity: 1;
    color: var(--sb-error);
    background: rgba(220, 38, 38, 0.1);
}

/* Cart Summary */
.sb-cart-summary {
    margin-bottom: 1rem;
}

.sb-summary-row {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    font-size: 0.9375rem;
}

.sb-summary-total {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--sb-text-primary);
    border-top: 1px solid var(--sb-border);
    padding-top: 0.75rem;
    margin-top: 0.5rem;
}

/* ========================================
   Modal (Checkout & Quote)
   ======================================== */
.sb-modal {
    position: fixed;
    inset: 0;
    z-index: 3000;
    display: flex;
    align-items: center;
    justify-content: center;
    visibility: hidden;
    opacity: 0;
    transition: visibility 0s 0.3s, opacity 0.3s;
}

.sb-modal.open {
    visibility: visible;
    opacity: 1;
    transition: visibility 0s, opacity 0.3s;
}

.sb-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
}

.sb-modal-content {
    position: relative;
    width: 100%;
    max-width: 700px;
    max-height: 90vh;
    background: var(--sb-surface-primary);
    border-radius: var(--sb-radius-lg);
    display: flex;
    flex-direction: column;
    margin: 1rem;
    transform: scale(0.95);
    transition: transform 0.3s ease;
}

.sb-modal.open .sb-modal-content {
    transform: scale(1);
}

.sb-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--sb-border);
    background: var(--sb-brand-dark);
    color: var(--sb-text-inverse);
    border-radius: var(--sb-radius-lg) var(--sb-radius-lg) 0 0;
}

.sb-modal-header h2 {
    margin: 0;
    font-size: 1.25rem;
    color: var(--sb-text-inverse);
}

.sb-modal-close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    font-size: 1.5rem;
    color: var(--sb-text-inverse);
    cursor: pointer;
    border-radius: var(--sb-radius);
    opacity: 0.7;
}

.sb-modal-close:hover {
    opacity: 1;
}

.sb-modal-body {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
}

.sb-modal-footer {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--sb-border);
    background: var(--sb-surface-secondary);
    border-radius: 0 0 var(--sb-radius-lg) var(--sb-radius-lg);
}

/* Quote Modal specific */
.sb-quote-modal .sb-modal-content {
    max-width: 500px;
}

.sb-quote-summary {
    padding: 1rem;
    background: var(--sb-surface-secondary);
    border-radius: var(--sb-radius);
}

.sb-quote-product {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.sb-quote-product-icon {
    width: 60px;
    height: 60px;
    background: var(--sb-surface-preview);
    border-radius: var(--sb-radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.sb-quote-product-icon svg {
    width: 40px;
    height: 40px;
    color: #888;
}

.sb-quote-product-info h4 {
    margin: 0 0 0.25rem;
    font-size: 1rem;
}

.sb-quote-product-info p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--sb-text-secondary);
}

.sb-quote-details {
    border-top: 1px solid var(--sb-border);
    padding-top: 1rem;
}

.sb-quote-details-row {
    display: flex;
    justify-content: space-between;
    padding: 0.375rem 0;
    font-size: 0.875rem;
}

.sb-quote-details-row.sb-quote-divider {
    border-top: 1px solid var(--sb-border);
    margin-top: 0.5rem;
    padding-top: 0.5rem;
}

.sb-quote-details-row.sb-quote-total {
    font-weight: 600;
    font-size: 1rem;
    color: var(--sb-accent);
}

/* ========================================
   Checkout Steps
   ======================================== */
.sb-steps {
    display: flex;
    justify-content: center;
    gap: 2rem;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--sb-border);
    background: var(--sb-surface-secondary);
}

.sb-step {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    opacity: 0.5;
}

.sb-step.active,
.sb-step.completed {
    opacity: 1;
}

.sb-step-num {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--sb-border);
    color: var(--sb-text-primary);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 50%;
}

.sb-step.active .sb-step-num {
    background: var(--sb-accent);
    color: var(--sb-text-inverse);
}

.sb-step.completed .sb-step-num {
    background: var(--sb-success);
    color: var(--sb-text-inverse);
}

.sb-step-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--sb-text-primary);
}

@media (max-width: 500px) {
    .sb-step-label {
        display: none;
    }
}

/* Checkout Form */
.sb-checkout-step {
    animation: sb-fadeIn 0.3s ease;
}

@keyframes sb-fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.sb-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.sb-col-full {
    grid-column: 1 / -1;
}

@media (max-width: 500px) {
    .sb-form-grid {
        grid-template-columns: 1fr;
    }
}

.sb-checkout-step input,
.sb-checkout-step textarea,
.sb-checkout-step select {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.9375rem;
    border: 1px solid var(--sb-border);
    border-radius: var(--sb-radius);
    background: var(--sb-surface-primary);
    color: var(--sb-text-primary);
    transition: border-color var(--sb-transition-micro);
}

.sb-checkout-step input:focus,
.sb-checkout-step textarea:focus,
.sb-checkout-step select:focus {
    outline: none;
    border-color: var(--sb-accent);
    box-shadow: 0 0 0 3px var(--sb-accent-glow);
}

.sb-checkout-step input::placeholder,
.sb-checkout-step textarea::placeholder {
    color: var(--sb-text-muted);
}

.sb-checkout-step label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--sb-text-primary);
    margin-bottom: 0.5rem;
}

/* Review Step */
.sb-review-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

@media (max-width: 500px) {
    .sb-review-grid {
        grid-template-columns: 1fr;
    }
}

.sb-review-section {
    margin-bottom: 1.5rem;
}

.sb-review-section h4 {
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--sb-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.sb-review-content {
    font-size: 0.9375rem;
    line-height: 1.5;
}

.sb-review-content p {
    margin: 0.25rem 0;
}

.sb-review-items-wrapper {
    overflow-x: auto;
}

.sb-review-table {
    width: 100%;
    font-size: 0.875rem;
    border-collapse: collapse;
}

.sb-review-table th,
.sb-review-table td {
    padding: 0.625rem 0.5rem;
    text-align: left;
    border-bottom: 1px solid var(--sb-border);
}

.sb-review-table th {
    font-weight: 600;
    color: var(--sb-text-muted);
    font-size: 0.75rem;
    text-transform: uppercase;
}

.sb-review-table td:last-child {
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.sb-review-totals {
    background: var(--sb-surface-secondary);
    border-radius: var(--sb-radius);
    padding: 1rem;
}

.sb-free-shipping {
    color: var(--sb-success);
    font-weight: 500;
}

/* Confirmation */
.sb-confirmation {
    text-align: center;
    padding: 2rem 0;
}

.sb-confirm-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    background: var(--sb-success);
    color: var(--sb-text-inverse);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sb-confirmation h3 {
    color: var(--sb-text-primary);
    margin-bottom: 0.5rem;
}

.sb-confirmation p {
    color: var(--sb-text-secondary);
    margin-bottom: 0.5rem;
}

.sb-order-id {
    font-size: 1.125rem;
    margin: 1rem 0;
}

.sb-order-id strong {
    font-family: 'JetBrains Mono', monospace;
    color: var(--sb-accent);
}

.sb-next-steps {
    background: var(--sb-surface-secondary);
    border-radius: var(--sb-radius);
    padding: 1.25rem;
    text-align: left;
    margin: 1.5rem 0;
}

.sb-next-steps h4 {
    font-size: 0.875rem;
    margin: 0 0 0.75rem;
}

.sb-next-steps ol {
    margin: 0;
    padding-left: 1.25rem;
    font-size: 0.875rem;
    color: var(--sb-text-secondary);
}

.sb-next-steps li {
    margin-bottom: 0.5rem;
}

.sb-confirm-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1.5rem;
}

/* ========================================
   Responsive Adjustments
   ======================================== */
@media (max-width: 768px) {
    .sb-layout {
        gap: 1rem;
    }

    .sb-preview-section {
        position: static;
    }

    .sb-card,
    .sb-preview-card {
        padding: 1rem;
    }

    .sb-cart-fab {
        bottom: 1rem;
        right: 1rem;
        width: 56px;
        height: 56px;
    }

    .sb-modal-content {
        margin: 0.5rem;
        max-height: 95vh;
    }

    .sb-confirm-actions {
        flex-direction: column;
    }
}

/* ========================================
   DXF Upload Section
   ======================================== */
.sb-upload-section {
    margin-top: 1.5rem;
    padding-top: 1rem;
}

.sb-upload-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    color: var(--sb-text-muted);
    font-size: 0.8125rem;
}

.sb-upload-divider::before,
.sb-upload-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--sb-border);
}

.sb-file-drop {
    border: 2px dashed var(--sb-border);
    border-radius: var(--sb-radius-lg);
    padding: 2rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--sb-transition);
    background: var(--sb-surface-secondary);
}

.sb-file-drop:hover {
    border-color: var(--sb-accent);
    background: var(--sb-accent-light);
}

.sb-file-drop.sb-drag-over {
    border-color: var(--sb-accent);
    background: var(--sb-accent-light);
    border-style: solid;
    transform: scale(1.02);
}

.sb-file-drop-content svg {
    color: var(--sb-text-muted);
    margin-bottom: 0.75rem;
    transition: color var(--sb-transition);
}

.sb-file-drop:hover svg,
.sb-file-drop.sb-drag-over svg {
    color: var(--sb-accent);
}

.sb-upload-title {
    font-weight: 600;
    color: var(--sb-text-primary);
    margin: 0 0 0.25rem;
}

.sb-upload-hint {
    font-size: 0.875rem;
    color: var(--sb-text-secondary);
    margin: 0 0 0.5rem;
}

.sb-upload-link {
    color: var(--sb-accent);
    text-decoration: underline;
    cursor: pointer;
}

.sb-upload-link:hover {
    color: var(--sb-accent-hover);
}

.sb-upload-formats {
    font-size: 0.75rem;
    color: var(--sb-text-muted);
    margin: 0;
}

/* File Info Display */
.sb-file-info {
    background: var(--sb-surface-secondary);
    border: 1px solid var(--sb-border);
    border-radius: var(--sb-radius-lg);
    overflow: hidden;
    animation: sb-slideIn 0.3s ease;
}

.sb-file-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--sb-surface-primary);
    border-bottom: 1px solid var(--sb-border);
}

.sb-file-icon {
    width: 40px;
    height: 40px;
    background: var(--sb-accent-light);
    border-radius: var(--sb-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.sb-file-icon svg {
    color: var(--sb-accent);
}

.sb-file-details {
    flex: 1;
    min-width: 0;
}

.sb-file-name {
    display: block;
    font-weight: 600;
    color: var(--sb-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sb-file-size {
    display: block;
    font-size: 0.75rem;
    color: var(--sb-text-muted);
}

.sb-file-remove {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--sb-text-muted);
    cursor: pointer;
    border-radius: var(--sb-radius);
    transition: all var(--sb-transition-micro);
}

.sb-file-remove:hover {
    background: var(--sb-accent-light);
    color: var(--sb-accent);
}

/* File Stats Grid */
.sb-file-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--sb-border);
}

.sb-file-stat {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.75rem 1rem;
    background: var(--sb-surface-primary);
}

.sb-stat-label {
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--sb-text-muted);
}

.sb-stat-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--sb-text-primary);
}

/* File Warnings */
.sb-file-warnings {
    padding: 0.75rem 1rem;
    background: rgba(245, 158, 11, 0.1);
    border-top: 1px solid rgba(245, 158, 11, 0.2);
}

.sb-file-warning {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    font-size: 0.8125rem;
    color: var(--sb-warning);
    margin-bottom: 0.5rem;
}

.sb-file-warning:last-child {
    margin-bottom: 0;
}

.sb-file-warning svg {
    flex-shrink: 0;
    margin-top: 2px;
}

.sb-file-warning.sb-warning-info {
    color: var(--sb-text-secondary);
}

.sb-file-warning.sb-warning-info svg {
    color: var(--sb-accent);
}

/* Plate Check */
.sb-file-plate-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: rgba(16, 185, 129, 0.1);
    color: var(--sb-success);
    font-size: 0.8125rem;
    font-weight: 500;
}

/* Upload Mode Active State */
.sb-upload-mode .sb-template-btn {
    opacity: 0.5;
    pointer-events: none;
}

.sb-upload-mode .sb-template-btn.active {
    opacity: 1;
    border-color: var(--sb-border);
    background: var(--sb-surface-secondary);
    box-shadow: none;
}

.sb-upload-mode .sb-template-btn.active::after {
    display: none;
}

/* DXF Preview Badge */
.sb-dxf-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 0.25rem 0.75rem;
    background: var(--sb-accent);
    color: white;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 4px;
    z-index: 5;
}

/* File Error State */
.sb-file-error {
    padding: 1rem;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--sb-radius);
    color: var(--sb-error);
    font-size: 0.875rem;
    text-align: center;
}

.sb-file-error svg {
    display: block;
    margin: 0 auto 0.5rem;
}

/* DFM Warning Styles */
.sb-file-warning.sb-warning-error {
    color: var(--sb-error);
    background: rgba(239, 68, 68, 0.05);
    padding: 0.5rem;
    border-radius: var(--sb-radius);
    margin-bottom: 0.5rem;
}

.sb-file-warning.sb-warning-dfm {
    color: var(--sb-warning);
}

/* DFM Badge */
.sb-dfm-badge {
    padding: 0.25rem 0.5rem;
    font-size: 0.6875rem;
    font-weight: 600;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    flex-shrink: 0;
}

.sb-dfm-badge-warning {
    background: rgba(245, 158, 11, 0.15);
    color: var(--sb-warning);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.sb-dfm-badge-error {
    background: rgba(239, 68, 68, 0.15);
    color: var(--sb-error);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* DFM Markers in SVG Preview */
.sb-dfm-marker {
    animation: sb-dfm-pulse 2s ease-in-out infinite;
}

.sb-dfm-marker-pulse {
    animation: sb-dfm-ring 2s ease-out infinite;
}

@keyframes sb-dfm-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes sb-dfm-ring {
    0% { transform: scale(1); opacity: 0.4; }
    50% { transform: scale(1.3); opacity: 0; }
    100% { transform: scale(1); opacity: 0; }
}

/* DFM Info Section */
.sb-dfm-info {
    margin-top: 0.75rem;
    padding: 0.75rem;
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: var(--sb-radius);
}

.sb-dfm-info.sb-dfm-info-error {
    background: rgba(239, 68, 68, 0.08);
    border-color: rgba(239, 68, 68, 0.2);
}

.sb-dfm-info-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.sb-dfm-info-header svg {
    flex-shrink: 0;
}

.sb-dfm-info-list {
    font-size: 0.75rem;
    color: var(--sb-text-secondary);
    margin: 0;
    padding-left: 1.25rem;
}

.sb-dfm-info-list li {
    margin-bottom: 0.25rem;
}

.sb-dfm-info-list li:last-child {
    margin-bottom: 0;
}

/* DXF Dimensions Info */
.sb-dxf-dimensions-info {
    text-align: center;
    padding: 1rem;
    background: var(--sb-surface-secondary);
    border-radius: var(--sb-radius);
}

.sb-dxf-dimensions-info p {
    margin: 0;
    color: var(--sb-text-secondary);
    font-size: 0.875rem;
}

.sb-dxf-dimensions-values {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.25rem !important;
    font-weight: 600;
    color: var(--sb-text-primary) !important;
    margin-top: 0.5rem !important;
}

/* DXF Cart Item */
.sb-cart-item-dxf .sb-cart-item-preview {
    background: linear-gradient(135deg, var(--sb-accent) 0%, #B91C1C 100%);
}

.sb-cart-item-dxf .sb-cart-item-preview svg {
    color: white;
}

/* ========================================
   DXF Preview Zoom/Pan Controls
   ======================================== */

.sb-preview-container {
    position: relative;
    overflow: hidden;
}

.sb-dxf-zoom-controls {
    position: absolute;
    top: 12px;
    right: 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    z-index: 10;
}

.sb-dxf-zoom-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    color: white;
    cursor: pointer;
    transition: all 0.15s ease;
}

.sb-dxf-zoom-btn:hover {
    background: rgba(0, 0, 0, 0.8);
    border-color: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

.sb-dxf-zoom-btn:active {
    transform: scale(0.95);
}

.sb-dxf-zoom-btn svg {
    width: 16px;
    height: 16px;
}

/* DFM Tooltip */
.sb-dfm-tooltip {
    position: absolute;
    z-index: 100;
    pointer-events: none;
    opacity: 0;
    transform: translateX(-50%) translateY(-100%);
    transition: opacity 0.2s ease;
}

.sb-dfm-tooltip.visible {
    opacity: 1;
}

.sb-dfm-tooltip-content {
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    padding: 0;
    min-width: 200px;
    max-width: 280px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    overflow: hidden;
}

.sb-dfm-tooltip-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.sb-dfm-tooltip-header.warning {
    background: rgba(245, 158, 11, 0.2);
    color: #F59E0B;
    border-bottom: 1px solid rgba(245, 158, 11, 0.3);
}

.sb-dfm-tooltip-header.error {
    background: rgba(239, 68, 68, 0.2);
    color: #EF4444;
    border-bottom: 1px solid rgba(239, 68, 68, 0.3);
}

.sb-dfm-tooltip-icon {
    font-size: 1rem;
}

.sb-dfm-tooltip-content p {
    margin: 0;
    padding: 0.75rem;
    font-size: 0.8125rem;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.9);
}

/* Improved DFM Markers */
.sb-dfm-marker-group {
    cursor: pointer;
}

.sb-dfm-marker-group:hover .sb-dfm-marker {
    fill-opacity: 0.3 !important;
}

.sb-dfm-marker {
    transition: fill-opacity 0.15s ease;
}

/* SVG Preview Cursor */
.sb-preview svg {
    cursor: grab;
}

.sb-preview svg:active {
    cursor: grabbing;
}

/* Scale bar styling */
.sb-scale-bar text {
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8);
}

/* Material fill styling */
.sb-dxf-material path {
    transition: fill 0.2s ease;
}

/* Geometry hover effects */
.sb-dxf-geometry line,
.sb-dxf-geometry circle,
.sb-dxf-geometry path {
    transition: stroke 0.15s ease, stroke-width 0.15s ease;
}

/* Fullscreen mode (for future expansion) */
.sb-preview-container.fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    background: var(--sb-bg);
    padding: 20px;
}

.sb-preview-container.fullscreen .sb-preview {
    width: 100%;
    height: 100%;
}

.sb-preview-container.fullscreen .sb-dxf-badge {
    top: 32px;
    left: 32px;
}

.sb-preview-container.fullscreen .sb-dxf-zoom-controls {
    top: 32px;
    right: 32px;
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
    .sb-cart-fab,
    .sb-drawer,
    .sb-modal {
        display: none !important;
    }
}