/* ==========================================================================
   ROOM-Acoustics Web - Material Theme Components
   Cards, Inputs, Buttons, Segmented Controls, Sheets & Dialogs
   ========================================================================== */

/* Cards (MaterialCard) */
.material-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.material-card.interactive:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  cursor: pointer;
}

.material-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.card-subtitle {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

/* Material Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 10px 18px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
  text-decoration: none;
}

.btn:active {
  transform: scale(0.97);
}

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

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

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-full);
  background: var(--color-surface-secondary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-subtle);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  background: var(--color-surface-tertiary);
}

.btn-icon:active {
  transform: scale(0.92);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.82rem;
  border-radius: var(--radius-sm);
}

/* Material Inputs & Dimension Fields */
.dimension-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.dimension-field {
  background: var(--color-surface-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-fast);
}

.dimension-field:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-light);
}

.dimension-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  margin-bottom: 4px;
}

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

.dimension-input {
  width: 100%;
  border: none;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-text-primary);
  outline: none;
}

.dimension-unit {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-left: 6px;
}

/* Segmented Controls (iOS Tab bar style) */
.segmented-control {
  display: flex;
  background: var(--color-surface-secondary);
  padding: 4px;
  border-radius: var(--radius-md);
  gap: 4px;
  border: 1px solid var(--color-border-subtle);
  overflow-x: auto;
}

.segment-item {
  flex: 1;
  text-align: center;
  padding: 8px 14px;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  user-select: none;
}

.segment-item.active {
  background: var(--color-surface);
  color: var(--color-text-primary);
  box-shadow: var(--shadow-sm);
}

/* Sliders */
.slider-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: var(--space-sm);
}

.slider-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.slider-input {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--color-surface-tertiary);
  outline: none;
}

.slider-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0,0,0,0.25);
  transition: transform var(--transition-fast);
}

.slider-input::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

/* Badges & Status Tags */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-optimal {
  background: rgba(52, 199, 89, 0.15);
  color: var(--color-success);
}

.badge-warning {
  background: rgba(255, 149, 0, 0.15);
  color: var(--color-warning);
}

.badge-poor {
  background: rgba(255, 59, 48, 0.15);
  color: var(--color-danger);
}

.badge-primary {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

/* Modal Sheets & Overlays */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  padding: var(--space-lg);
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .modal-card {
  transform: scale(1);
}

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

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
}