:root {
  --berkam-navy-800: #162D4A;
  --berkam-gold-500: #C4962E;
  --berkam-neutral-50: #FAFAF7;
  --berkam-border: #ded8cf;
  --berkam-bg-active: #f5f2ee;
  --berkam-text-main: #0a1628;
  --berkam-text-muted: #536071;
  --berkam-transition: 400ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.berkam-alert {
  padding: 16px;
  background-color: #fff3cd;
  color: #856404;
  border: 1px solid #ffeeba;
  border-radius: 4px;
  margin-bottom: 24px;
}

.berkam-shirt-configurator {
  max-width: 1180px;
  margin: 0 auto;
  padding: 48px 24px;
  font-family: sans-serif;
}

.berkam-shirt-configurator__layout {
  display: flex;
  gap: 32px;
  align-items: flex-start;
}

.berkam-shirt-configurator__main {
  flex: 1;
  min-width: 0;
  position: relative;
  overflow: hidden;
}

/* Stepper */
.berkam-shirt-configurator__progress {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
  position: relative;
}

.berkam-shirt-step-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  color: var(--berkam-text-muted);
  position: relative;
  z-index: 2;
}

.berkam-shirt-step-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--berkam-border);
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--berkam-transition);
}

.berkam-shirt-step-text {
  font-size: 0.85rem;
  font-weight: 600;
  transition: color var(--berkam-transition);
}

.berkam-shirt-step-btn[aria-selected="true"] .berkam-shirt-step-icon {
  border-color: var(--berkam-gold-500);
  background: var(--berkam-gold-500);
  box-shadow: 0 0 0 4px rgba(196, 150, 46, 0.2);
  animation: berkam-pulse 2s infinite;
}

.berkam-shirt-step-btn[data-status="completed"] .berkam-shirt-step-icon {
  border-color: var(--berkam-gold-500);
  background: var(--berkam-gold-500);
}

.berkam-shirt-step-btn[data-status="completed"] .berkam-shirt-step-icon::after {
  content: "✓";
  color: #fff;
  font-size: 14px;
}

.berkam-shirt-step-btn[aria-selected="true"] .berkam-shirt-step-text,
.berkam-shirt-step-btn[data-status="completed"] .berkam-shirt-step-text {
  color: var(--berkam-text-main);
}

.berkam-shirt-step-line {
  flex: 1;
  height: 2px;
  background: var(--berkam-border);
  margin: 0 12px;
  margin-top: -24px;
  transition: background var(--berkam-transition);
  position: relative;
  z-index: 1;
}

.berkam-shirt-step-line[data-status="completed"] {
  background: var(--berkam-gold-500);
}

@keyframes berkam-pulse {
  0% { box-shadow: 0 0 0 0 rgba(196, 150, 46, 0.4); }
  70% { box-shadow: 0 0 0 10px rgba(196, 150, 46, 0); }
  100% { box-shadow: 0 0 0 0 rgba(196, 150, 46, 0); }
}

/* Body & Panels */
.berkam-shirt-configurator__body-wrapper {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--berkam-border);
  background: #fff;
}

.berkam-shirt-configurator__body {
  position: relative;
  display: grid;
}

.berkam-shirt-panel {
  grid-area: 1 / 1;
  padding: 28px;
  border: 0;
  margin: 0;
  width: 100%;
  box-sizing: border-box;
  opacity: 1;
  transform: translateX(0);
  transition: transform var(--berkam-transition), opacity var(--berkam-transition);
}

.berkam-shirt-panel[hidden] {
  display: block !important;
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
}

.berkam-shirt-panel.slide-out-left {
  transform: translateX(-100%);
  opacity: 0;
}

.berkam-shirt-panel.slide-out-right {
  transform: translateX(100%);
  opacity: 0;
}

.berkam-shirt-panel.slide-in-right {
  animation: slideInRight var(--berkam-transition) forwards;
}

.berkam-shirt-panel.slide-in-left {
  animation: slideInLeft var(--berkam-transition) forwards;
}

@keyframes slideInRight {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes slideInLeft {
  from { transform: translateX(-100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.berkam-shirt-panel-title {
  margin-top: 0;
  margin-bottom: 20px;
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--berkam-text-main);
}

.berkam-shirt-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.berkam-shirt-options label {
  cursor: pointer;
}

.berkam-shirt-options input {
  position: absolute;
  opacity: 0;
}

.berkam-shirt-options span {
  display: flex;
  align-items: center;
  min-height: 64px;
  padding: 14px 18px;
  border: 1px solid var(--berkam-border);
  transition: all 0.2s ease;
}

.berkam-shirt-options input:checked + span {
  border: 2px solid var(--berkam-gold-500);
  background: var(--berkam-bg-active);
}

/* Fabrics */
.berkam-shirt-fabric-note {
  margin: -6px 0 20px;
  color: var(--berkam-text-muted);
}

.berkam-shirt-fabric-tools {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 12px;
  margin-bottom: 10px;
}

.berkam-shirt-fabric-tools label {
  display: grid;
  gap: 6px;
  color: var(--berkam-text-muted);
  font-size: 0.84rem;
}

.berkam-shirt-fabric-tools input,
.berkam-shirt-fabric-tools select {
  min-height: 44px;
  padding: 9px 12px;
  border: 1px solid #cfc7bb;
  background: #fff;
  color: var(--berkam-text-main);
}

.berkam-shirt-fabric-results {
  margin: 0 0 12px;
  color: var(--berkam-text-muted);
  font-size: 0.9rem;
}

.berkam-shirt-fabrics-container {
  max-height: 680px;
  overflow-y: auto;
  padding: 2px;
}

.berkam-shirt-fabric-group {
  margin-bottom: 24px;
}

.berkam-shirt-fabric-group-title {
  margin: 0 0 12px;
  font-size: 1.2rem;
  color: var(--berkam-text-main);
  border-bottom: 1px solid var(--berkam-border);
  padding-bottom: 8px;
}

.berkam-fabric-group-toggle {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  color: inherit;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  width: 100%;
  align-items: center;
}

.berkam-fabric-group-toggle .berkam-fabric-group-icon {
  font-size: 0.8em;
  transition: transform 0.3s ease;
}

.berkam-fabric-group-toggle[aria-expanded="false"] .berkam-fabric-group-icon {
  transform: rotate(-90deg);
}

.berkam-shirt-fabrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.berkam-shirt-fabric-card-wrapper {
  position: relative;
}

.berkam-shirt-fabric-card {
  cursor: pointer;
  display: block;
  height: 100%;
}

.berkam-shirt-fabric-card input {
  position: absolute;
  opacity: 0;
}

.berkam-shirt-fabric-card__inner {
  display: flex;
  height: 100%;
  min-height: 260px;
  flex-direction: column;
  border: 1px solid var(--berkam-border);
  background: #fff;
  overflow: hidden;
  transition: all 0.2s ease;
}

.berkam-shirt-fabric-card input:focus-visible + .berkam-shirt-fabric-card__inner {
  outline: 2px solid var(--berkam-navy-800);
  outline-offset: 2px;
}

.berkam-shirt-fabric-card input:checked + .berkam-shirt-fabric-card__inner {
  outline: 3px solid var(--berkam-gold-500);
  outline-offset: -3px;
  background: #faf7f2;
}

.berkam-fabric-image-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
  overflow: hidden;
}

.berkam-fabric-image-wrapper img,
.berkam-shirt-fabric-card__placeholder {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: linear-gradient(135deg, #f5f2ee, #ded8cf);
}

.berkam-fabric-zoom-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(255, 255, 255, 0.8);
  border: none;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transform: translateY(-10px);
  transition: all 0.2s ease;
  backdrop-filter: blur(4px);
}

.berkam-shirt-fabric-card:hover .berkam-fabric-zoom-btn {
  opacity: 1;
  transform: translateY(0);
}

.berkam-fabric-zoom-btn:hover {
  background: #fff;
  transform: scale(1.1);
}

.berkam-shirt-fabric-card strong {
  padding: 14px 14px 5px;
  color: var(--berkam-text-main);
}

.berkam-shirt-fabric-color {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 14px 5px;
  color: var(--berkam-text-muted);
  font-size: 0.78rem;
}

.berkam-shirt-fabric-color i {
  width: 16px;
  height: 16px;
  border: 1px solid #cfc7bb;
  border-radius: 50%;
}

.berkam-shirt-fabric-specs {
  padding: 0 14px 15px;
  color: var(--berkam-text-muted);
  line-height: 1.45;
}

.berkam-shirt-fabric-specs span {
  display: block;
  margin-top: 3px;
}

.berkam-shirt-fabric-card--later .berkam-shirt-fabric-card__placeholder {
  position: relative;
}

.berkam-shirt-fabric-card--later .berkam-shirt-fabric-card__placeholder:after {
  content: "?";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: #8b6a31;
  font-size: 56px;
  font-weight: 700;
}

/* Actions */
.berkam-shirt-configurator__actions {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 20px 28px;
  background: #fafaf7;
  border-top: 1px solid var(--berkam-border);
}

.berkam-shirt-configurator__actions button {
  min-height: 48px;
  padding: 0 22px;
  cursor: pointer;
  font-weight: 600;
  border: none;
  transition: background 0.2s;
}

.berkam-btn-primary {
  background: var(--berkam-navy-800);
  color: #fff;
}
.berkam-btn-primary:hover {
  background: #0f1f33;
}

.berkam-btn-secondary {
  background: #e2e8f0;
  color: var(--berkam-text-main);
}
.berkam-btn-secondary:hover {
  background: #cbd5e1;
}
.berkam-btn-secondary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.berkam-btn-outline {
  background: transparent;
  border: 1px solid var(--berkam-text-main) !important;
  color: var(--berkam-text-main);
  padding: 8px 16px;
  cursor: pointer;
}
.berkam-btn-outline:hover {
  background: #f1f5f9;
}

/* Summary Card */
.berkam-shirt-summary-wrapper {
  width: 320px;
  flex-shrink: 0;
}

.berkam-shirt-summary {
  position: sticky;
  top: 24px;
  background: var(--berkam-neutral-50);
  border: 1px solid var(--berkam-border);
  padding: 24px;
  border-radius: 4px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.berkam-shirt-summary.highlight {
  box-shadow: 0 0 0 2px var(--berkam-gold-500);
  transform: translateY(-2px);
}

.berkam-shirt-summary h3 {
  margin-top: 0;
  margin-bottom: 16px;
  font-size: 1.2rem;
  color: var(--berkam-text-main);
}

.berkam-shirt-summary-list {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
  font-size: 0.9rem;
}

.berkam-shirt-summary-list li {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--berkam-border);
}

.berkam-shirt-summary-list span.label {
  color: var(--berkam-text-muted);
}

.berkam-shirt-summary-list span.value {
  color: var(--berkam-text-main);
  font-weight: 600;
  text-align: right;
  max-width: 60%;
}

.berkam-shirt-summary-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Modal */
.berkam-fabric-modal,
.berkam-dialog {
  padding: 0;
  border: none;
  background: transparent;
  max-width: 100vw;
  max-height: 100vh;
}

.berkam-fabric-modal::backdrop,
.berkam-dialog::backdrop {
  background: rgba(10, 22, 40, 0.6);
  backdrop-filter: blur(4px);
}

.berkam-fabric-modal-content {
  background: #fff;
  width: 90vw;
  max-width: 800px;
  max-height: 90vh;
  overflow: auto;
  position: relative;
  border-radius: 8px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

.berkam-fabric-modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: rgba(0,0,0,0.5);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  font-size: 20px;
  cursor: pointer;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
}
.berkam-fabric-modal-close:hover {
  background: rgba(0,0,0,0.8);
}

.berkam-fabric-modal-body {
  display: flex;
  flex-direction: column;
}

.berkam-fabric-modal-body img {
  width: 100%;
  height: auto;
  display: block;
}

.berkam-fabric-modal-specs {
  padding: 24px;
}
.berkam-fabric-modal-specs h3 {
  margin-top: 0;
}
.berkam-fabric-modal-specs ul {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.berkam-dialog-content {
  background: #fff;
  padding: 32px;
  max-width: 400px;
  border-radius: 8px;
  text-align: center;
}

.berkam-dialog-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 24px;
}

/* Utilities */
.screen-reader-text {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Responsive */
@media (max-width: 992px) {
  .berkam-shirt-configurator__layout {
    flex-direction: column;
  }
  .berkam-shirt-summary-wrapper {
    width: 100%;
    order: 2;
  }
  
  .berkam-shirt-summary {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    top: auto;
    z-index: 100;
    border-radius: 0;
    padding: 16px;
    box-shadow: 0 -4px 12px rgba(0,0,0,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .berkam-shirt-summary h3 {
    margin: 0;
    font-size: 1rem;
  }
  .berkam-shirt-summary-list {
    display: none; /* Hide details on mobile to save space */
  }
  .berkam-shirt-summary-actions {
    flex-direction: row;
  }
  
  .berkam-shirt-configurator {
    padding-bottom: 100px; /* Space for fixed summary */
  }
}

@media (max-width: 820px) {
  .berkam-shirt-configurator {
    padding: 28px 16px 100px;
  }
  
  .berkam-shirt-configurator__progress {
    overflow-x: auto;
    padding-bottom: 12px;
    justify-content: flex-start;
    gap: 24px;
  }
  
  .berkam-shirt-step-line {
    display: none;
  }
  
  .berkam-shirt-options,
  .berkam-shirt-fabrics,
  .berkam-shirt-fabric-tools {
    grid-template-columns: 1fr;
  }
  
  .berkam-shirt-fabrics-container {
    max-height: none;
  }
  
  .berkam-shirt-fabric-card__inner {
    min-height: 0;
  }
  
  .berkam-fabric-modal-specs ul {
    grid-template-columns: 1fr;
  }
}