/* ==========================================================================
   Design Spectrum — Modal & Preview Emulation Styles
   ========================================================================== */

/* Full Screen Modal Overlay */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(17, 24, 39, 0.82);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  transition: opacity 280ms ease, visibility 280ms ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Modal Inner Container */
.modal-container {
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  max-width: 100vw;
  max-height: 100vh;
  background-color: #0f172a;
  overflow: hidden;
}

/* Browser Window Header */
.browser-header {
  height: 56px;
  background-color: #1e293b;
  border-bottom: 1px solid #334155;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-4);
  color: #f8fafc;
  user-select: none;
  flex-shrink: 0;
}

.browser-header-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  min-width: 200px;
}

.window-dots {
  display: flex;
  align-items: center;
  gap: 6px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}

.dot-red { background-color: #ef4444; }
.dot-yellow { background-color: #f59e0b; }
.dot-green { background-color: #10b981; }

.modal-title-group {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  overflow: hidden;
}

.modal-demo-title {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: #f8fafc;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.modal-category-badge {
  font-size: 0.65rem;
  padding: 2px 8px;
  background-color: #334155;
  color: #94a3b8;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: var(--fw-medium);
  white-space: nowrap;
}

/* Viewport Selector Controls */
.viewport-controls {
  display: flex;
  align-items: center;
  background-color: #0f172a;
  padding: 3px;
  border-radius: var(--radius-md);
  border: 1px solid #334155;
}

.viewport-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px 12px;
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  color: #94a3b8;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.viewport-btn svg {
  width: 16px;
  height: 16px;
}

.viewport-btn:hover {
  color: #f8fafc;
  background-color: rgba(255, 255, 255, 0.05);
}

.viewport-btn.active {
  background-color: #2563eb;
  color: #ffffff;
  font-weight: var(--fw-semibold);
}

.browser-header-right {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-width: 200px;
  justify-content: flex-end;
}

.action-icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: #94a3b8;
  transition: all var(--transition-fast);
}

.action-icon-btn:hover {
  background-color: #334155;
  color: #ffffff;
}

.action-icon-btn svg {
  width: 18px;
  height: 18px;
}

.close-modal-btn {
  background-color: #334155;
  color: #ffffff;
  margin-left: var(--space-2);
}

.close-modal-btn:hover {
  background-color: #ef4444;
}

/* Viewport Stage & Frame Container */
.preview-stage {
  flex-grow: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #090d16;
  padding: var(--space-4);
  position: relative;
  overflow: hidden;
}

.iframe-wrapper {
  height: 100%;
  width: 100%;
  max-width: 1440px;
  background-color: #ffffff;
  border-radius: var(--radius-sm);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  transition: width 300ms cubic-bezier(0.16, 1, 0.3, 1), height 300ms cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

/* Device Viewport Presets */
.iframe-wrapper[data-viewport="desktop"] {
  width: 100%;
  max-width: 1440px;
  height: 100%;
}

.iframe-wrapper[data-viewport="tablet"] {
  width: 768px;
  max-width: 100%;
  height: 94%;
  border-radius: var(--radius-md);
  border: 8px solid #1e293b;
}

.iframe-wrapper[data-viewport="mobile"] {
  width: 390px;
  max-width: 100%;
  height: 85%;
  border-radius: 28px;
  border: 10px solid #1e293b;
}

/* Loading Overlay */
.preview-loader {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #ffffff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  z-index: 10;
  transition: opacity 250ms ease;
}

.preview-loader.hidden {
  opacity: 0;
  pointer-events: none;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-light);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.demo-iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

@media (max-width: 768px) {
  .viewport-controls {
    display: none;
  }
  .browser-header-left {
    min-width: auto;
  }
}