/* ============================================
   SkanPort Garage Door Configurator
   ============================================ */

/* --- Design tokens --- */
:root {
  --color-primary: #2c5282;
  --color-primary-light: #3b6db5;
  --color-primary-dark: #1e3a5f;
  --color-accent: #f36827;
  --color-accent-light: #f5884f;
  --color-success: #2d6a4f;
  --color-error: #c53030;
  --color-bg: #f7f6f3;
  --color-surface: #ffffff;
  --color-text: #2d3748;
  --color-text-light: #718096;
  --color-border: #e2e0dc;
  --color-border-focus: var(--color-primary);

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  --transition: 0.2s ease;
  --font-sans: 'Barlow', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* --- Reset & base --- */
*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* --- Header --- */
.site-header {
  background: var(--color-primary-dark);
  color: #fff;
  padding: var(--space-md) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.site-nav a {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--transition);
}

.site-nav a:hover { color: #fff; }

/* --- Footer --- */
.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255,255,255,0.6);
  padding: var(--space-lg) 0;
  text-align: center;
  font-size: 0.85rem;
  margin-top: var(--space-2xl);
}

/* --- Configurator layout --- */
.configurator {
  padding: var(--space-xl) 0;
}

.configurator-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.configurator-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin: 0 0 var(--space-sm);
}

.configurator-subtitle {
  color: var(--color-text-light);
  font-size: 1rem;
  margin: 0;
}

.configurator-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.configurator-options {
  min-width: 0;
}

.configurator-sidebar {
  position: sticky;
  top: 80px;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

/* --- Progress bar --- */
.configurator-progress {
  margin-bottom: var(--space-xl);
  position: relative;
}

.progress-track {
  position: absolute;
  top: 18px;
  left: calc(100% / 12);
  right: calc(100% / 12);
  height: 3px;
  background: var(--color-border);
  border-radius: 2px;
  z-index: 0;
  /* Track spans from center of first step to center of last step.
     With 6 equal flex items, each is 1/6 wide, so centers are at
     1/12, 3/12, 5/12, 7/12, 9/12, 11/12. Inset = 1/12 from each side. */
}

.progress-fill {
  height: 100%;
  background: #f36827;
  border-radius: 2px;
  transition: width 0.4s ease;
  width: 0%;
}

.progress-steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  justify-content: space-between;
  position: relative;
  z-index: 1;
}

.progress-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  cursor: pointer;
  flex: 1;
}

.step-number {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-light);
  transition: all var(--transition);
}

.step-label {
  font-size: 0.75rem;
  color: var(--color-text-light);
  text-align: center;
  transition: color var(--transition);
  white-space: nowrap;
}

.progress-step.active .step-number {
  background: #f36827;
  border-color: #f36827;
  color: #fff;
}

.progress-step.active .step-label {
  color: #f36827;
  font-weight: 600;
}

.progress-step.completed .step-number {
  background: #f36827;
  border-color: #f36827;
  color: #fff;
}

.progress-step.completed .step-label {
  color: #f36827;
}

/* --- Step panels --- */
.step-panel {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  animation: fadeIn 0.3s ease;
}

.step-panel[hidden] { display: none; }

.step-header {
  margin-bottom: var(--space-lg);
}

.step-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 var(--space-xs);
}

.step-description {
  color: var(--color-text-light);
  font-size: 0.9rem;
  margin: 0;
}

/* --- Card options (models, windows) --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.card-option {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  cursor: pointer;
  text-align: center;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  font-family: inherit;
  font-size: inherit;
  color: var(--color-text);
}

.card-option:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.card-option.selected {
  border-color: var(--color-primary);
  background: rgba(44,82,130,0.04);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.card-option.unavailable {
  opacity: 0.35;
  pointer-events: none;
  display: none;
}

.card-icon {
  width: 64px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.card-img-wrap {
  position: relative;
  width: 100%;
}

.card-img {
  width: 100%;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius-sm);
  background: var(--color-bg);
}

.card-zoom-btn {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: none;
  background: rgba(0,0,0,0.5);
  color: #fff;
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.2s ease;
  padding: 0;
}

.card-img-wrap:hover .card-zoom-btn,
.card-option:hover .card-zoom-btn {
  opacity: 1;
}

.card-zoom-btn:hover {
  background: rgba(0,0,0,0.75);
}

/* Lightbox */
.lightbox-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(0,0,0,0.8);
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.lightbox-overlay.active {
  display: flex;
}

.lightbox-img {
  max-width: 90%;
  max-height: 85vh;
  object-fit: contain;
}

.lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: #fff;
  font-size: 2.5rem;
  cursor: pointer;
  line-height: 1;
  padding: 0;
  opacity: 0.8;
  transition: opacity 0.2s;
}

.lightbox-close:hover {
  opacity: 1;
}

/* Model card icons */
.model-classic {
  background: linear-gradient(to bottom,
    var(--color-border) 0%, var(--color-border) 24%,
    var(--color-bg) 24%, var(--color-bg) 26%,
    var(--color-border) 26%, var(--color-border) 49%,
    var(--color-bg) 49%, var(--color-bg) 51%,
    var(--color-border) 51%, var(--color-border) 74%,
    var(--color-bg) 74%, var(--color-bg) 76%,
    var(--color-border) 76%, var(--color-border) 100%
  );
  border: 1px solid #ccc;
}

.model-modern {
  background: var(--color-text-light);
  border: 1px solid #999;
}

.model-ribbed {
  background: repeating-linear-gradient(
    to bottom,
    #bbb 0px, #bbb 4px,
    #d0d0d0 4px, #d0d0d0 8px
  );
  border: 1px solid #aaa;
}

.model-woodgrain {
  background: linear-gradient(135deg, #c8a97e, #a67c52);
  border: 1px solid #8b6914;
}

.model-carriage {
  background: linear-gradient(to bottom, #b8956a, #9a7b54);
  border: 1px solid #7d6340;
  box-shadow: inset 2px 0 0 #7d6340, inset -2px 0 0 #7d6340, inset 0 2px 0 #7d6340, inset 0 -2px 0 #7d6340;
}

/* Window card icons */
.window-none { background: var(--color-border); }
.window-square { background: linear-gradient(to bottom, rgba(140,180,210,0.4) 40%, var(--color-border) 40%); }
.window-arch { background: radial-gradient(ellipse at top, rgba(140,180,210,0.4) 30%, var(--color-border) 50%); }
.window-panoramic { background: linear-gradient(to bottom, rgba(140,180,210,0.4) 25%, var(--color-border) 25%); }
.window-full-view { background: linear-gradient(to bottom, rgba(140,180,210,0.5) 60%, var(--color-border) 60%); }

.card-label {
  font-weight: 600;
  font-size: 0.9rem;
}

.card-description {
  font-size: 0.78rem;
  color: var(--color-text-light);
  line-height: 1.3;
}

.card-price {
  font-size: 0.8rem;
  color: var(--color-accent);
  font-weight: 600;
}

/* --- Swatch options (colors) --- */
.swatch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  gap: var(--space-md);
}

.swatch-option {
  background: none;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  cursor: pointer;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  transition: all var(--transition);
  font-family: inherit;
}

.swatch-option:hover {
  border-color: var(--color-border);
  background: rgba(0,0,0,0.02);
}

.swatch-option.selected {
  border-color: var(--color-primary);
  background: rgba(44,82,130,0.04);
}

.swatch-color {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: block;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,0.1), 0 1px 3px rgba(0,0,0,0.1);
  transition: transform var(--transition), box-shadow var(--transition);
}

.swatch-option.selected .swatch-color {
  transform: scale(1.1);
  box-shadow: inset 0 0 0 1px rgba(0,0,0,0.1), 0 0 0 3px var(--color-primary), 0 2px 8px rgba(0,0,0,0.15);
}

.swatch-label {
  font-size: 0.75rem;
  color: var(--color-text);
  font-weight: 500;
}

.swatch-price {
  font-size: 0.7rem;
  color: var(--color-accent);
  font-weight: 600;
}

/* --- Color section --- */
.color-section-title {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

/* --- RAL picker --- */
.ral-picker {
  margin-top: var(--space-xs);
}

.ral-search {
  width: 100%;
  padding: 10px 14px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color var(--transition);
  margin-bottom: var(--space-sm);
  box-sizing: border-box;
}

.ral-search:focus {
  border-color: var(--color-primary);
}

.ral-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
  gap: 6px;
  max-height: 280px;
  overflow-y: auto;
  padding: 4px;
}

.ral-swatch {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 6px 4px;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: none;
  font-family: inherit;
  transition: all var(--transition);
}

.ral-swatch:hover {
  border-color: var(--color-border);
  background: rgba(0,0,0,0.02);
}

.ral-swatch.selected {
  border-color: var(--color-primary);
  background: rgba(44,82,130,0.06);
}

.ral-swatch-color {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.1);
}

.ral-swatch.selected .ral-swatch-color {
  box-shadow: inset 0 0 0 1px rgba(0,0,0,0.1), 0 0 0 3px var(--color-primary), 0 2px 6px rgba(0,0,0,0.15);
  transform: scale(1.05);
}

.ral-swatch-label {
  font-size: 0.6rem;
  color: var(--color-text);
  font-weight: 600;
  text-align: center;
  line-height: 1.2;
}

.ral-swatch-name {
  font-size: 0.55rem;
  color: var(--color-text-light);
  font-weight: 400;
  text-align: center;
  line-height: 1.2;
}

/* --- Size selector --- */
.size-selector {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.dimension-label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

/* --- Size input fields --- */
.size-input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.size-input-wrapper {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  transition: border-color var(--transition);
}

.size-input-wrapper:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.size-input {
  border: none;
  outline: none;
  font-family: inherit;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-text);
  width: 100%;
  background: transparent;
  -moz-appearance: textfield;
}

.size-input::-webkit-outer-spin-button,
.size-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.size-input-unit {
  font-size: 0.9rem;
  color: var(--color-text-light);
  font-weight: 500;
  flex-shrink: 0;
}

.size-range-hint {
  font-size: 0.75rem;
  color: var(--color-text-light);
  padding-left: 2px;
}

.size-input.invalid {
  color: var(--color-error);
}

.size-input-wrapper.invalid {
  border-color: var(--color-error);
}

/* --- Background selector --- */
.background-selector {
  padding: var(--space-sm) var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  border-top: 1px solid var(--color-border);
}

.background-selector-label {
  font-size: 0.75rem;
  color: var(--color-text-light);
  font-weight: 500;
  white-space: nowrap;
}

.background-options {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.background-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 4px;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  background: none;
  cursor: pointer;
  font-family: inherit;
  transition: all var(--transition);
}

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

.background-option.selected {
  border-color: var(--color-primary);
}

.bg-swatch {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(0,0,0,0.12);
}

.bg-swatch-brick {
  background: repeating-linear-gradient(
    0deg,
    #b5614b 0px, #b5614b 10px,
    #c8bea0 10px, #c8bea0 12px
  );
}

.bg-label {
  font-size: 0.6rem;
  color: var(--color-text-light);
}

.size-preview-text {
  padding: var(--space-md);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  text-align: center;
  color: var(--color-text-light);
  font-size: 0.9rem;
}

.size-unavailable-alert,
.size-oversize-alert {
  margin-top: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: #fff5f5;
  border: 1px solid #feb2b2;
  border-radius: var(--radius-md);
  color: var(--color-error);
  font-size: 0.9rem;
  text-align: center;
  font-weight: 500;
}

.size-oversize-alert a {
  color: var(--color-primary);
  font-weight: 600;
}

/* --- Radio options --- */
.radio-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.radio-option {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition);
}

.radio-option:hover {
  border-color: var(--color-primary-light);
  background: rgba(44,82,130,0.02);
}

.radio-option:has(input:checked) {
  border-color: var(--color-primary);
  background: rgba(44,82,130,0.04);
}

.radio-option input[type="radio"] {
  appearance: none;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-radius: 50%;
  flex-shrink: 0;
  transition: all var(--transition);
  position: relative;
}

.radio-option input[type="radio"]:checked {
  border-color: var(--color-primary);
  background: var(--color-primary);
}

.radio-option input[type="radio"]:checked::after {
  content: '';
  width: 6px;
  height: 6px;
  background: #fff;
  border-radius: 50%;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.radio-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}

.radio-label {
  font-weight: 600;
  font-size: 0.9rem;
}

.radio-description {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

.radio-price {
  font-size: 0.85rem;
  color: var(--color-accent);
  font-weight: 600;
  white-space: nowrap;
}

/* --- Checkbox options --- */
.checkbox-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.checkbox-option {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition);
}

.checkbox-option:hover {
  border-color: var(--color-primary-light);
  background: rgba(44,82,130,0.02);
}

.checkbox-option:has(input:checked) {
  border-color: var(--color-primary);
  background: rgba(44,82,130,0.04);
}

.checkbox-option input[type="checkbox"] {
  appearance: none;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  transition: all var(--transition);
  position: relative;
}

.checkbox-option input[type="checkbox"]:checked {
  border-color: var(--color-primary);
  background: var(--color-primary);
}

.checkbox-option input[type="checkbox"]:checked::after {
  content: '';
  width: 5px;
  height: 9px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  position: absolute;
  top: 2px;
  left: 6px;
  transform: rotate(45deg);
}

.checkbox-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}

.checkbox-label {
  font-weight: 600;
  font-size: 0.9rem;
}

.checkbox-description {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

.checkbox-price {
  font-size: 0.85rem;
  color: var(--color-accent);
  font-weight: 600;
  white-space: nowrap;
}

/* --- Preview panel --- */
.preview-panel {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  position: relative;
}

.preview-badge {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: var(--color-success);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

.preview-canvas {
  aspect-ratio: 500 / 420;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
}

.door-svg {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
}

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

.preview-product-name {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 var(--space-sm);
  color: var(--color-text);
}

.preview-selections {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  justify-content: center;
}

.preview-tag {
  display: inline-block;
  background: var(--color-bg);
  color: var(--color-text-light);
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

/* --- Price summary --- */
.price-summary {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

.price-breakdown {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

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

.price-label {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.price-value {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
}

.price-item .price-label,
.price-item .price-value {
  font-size: 0.82rem;
}

.price-item .price-value {
  color: var(--color-accent);
}

.price-divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-xs) 0;
}

.price-total .price-label {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
}

.price-total .price-value {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-primary-dark);
}

/* --- Navigation buttons --- */
.configurator-nav {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-lg);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

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

.btn-primary:disabled {
  background: var(--color-border);
  border-color: var(--color-border);
  color: var(--color-text-light);
  cursor: not-allowed;
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

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

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

.btn-lg {
  padding: var(--space-md) var(--space-xl);
  font-size: 1.05rem;
  width: 100%;
  justify-content: center;
}

.btn-price {
  opacity: 0.85;
  font-weight: 500;
  margin-left: var(--space-sm);
}

/* --- Review panel --- */
.review-summary {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.review-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg);
  border-radius: var(--radius-sm);
}

.review-row-label {
  font-size: 0.85rem;
  color: var(--color-text-light);
  font-weight: 500;
}

.review-row-value {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
}

.review-checkboxes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
  padding: var(--space-lg);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.review-checkbox-group.full-width {
  grid-column: 1 / -1;
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-lg);
}

.review-checkbox-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 var(--space-sm) 0;
}

.review-checkbox-desc {
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin: 0 0 var(--space-sm) 0;
}

.review-checkbox-option {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--color-text);
  cursor: pointer;
  padding: 4px 0;
}

.review-checkbox-option input {
  margin-top: 2px;
  accent-color: var(--color-accent);
}

.review-checkbox-group.invalid {
  border-radius: var(--radius-sm);
  outline: 2px solid #e74c3c;
  outline-offset: 4px;
}

@media (max-width: 900px) {
  .review-checkboxes {
    grid-template-columns: 1fr;
  }
}

.review-actions {
  margin-top: var(--space-md);
}

.payment-note {
  text-align: center;
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-top: var(--space-sm);
}

/* --- Toast notification --- */
.toast {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  background: #e74c3c;
  color: #fff;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  opacity: 1;
  animation: slideInToast 0.3s ease;
  transition: opacity 0.5s ease;
  z-index: 200;
}

/* --- Animations --- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInToast {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeOutToast {
  from { opacity: 1; }
  to { opacity: 0; }
}

/* --- Responsive --- */
@media (hover: none) {
  .card-zoom-btn {
    opacity: 0.7;
  }
}

@media (max-width: 900px) {
  .configurator-body {
    grid-template-columns: 1fr;
  }

  .configurator-sidebar {
    position: static;
    order: -1;
  }

  .progress-steps {
    gap: 0;
  }

  .step-label {
    font-size: 0.65rem;
  }
}

@media (max-width: 600px) {
  .container {
    padding: 0 var(--space-md);
  }

  .configurator-title {
    font-size: 1.4rem;
  }

  .step-panel {
    padding: var(--space-md);
  }

  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .swatch-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .size-input-group {
    gap: var(--space-xs);
  }

  .size-input {
    font-size: 1rem;
  }

  .step-number {
    width: 28px;
    height: 28px;
    font-size: 0.75rem;
  }

  .progress-track {
    top: 14px;
  }
}