/**
 * Bill Split Calculator — Calculator Component Styles
 *
 * @package BillSplit
 * @version 1.0.0
 */

/* ========================================
   CALCULATOR WRAPPER
======================================== */
.bsc-calculator {
  background: var(--bs-bg);
  border: 2px solid var(--bs-border);
  border-radius: var(--bs-radius-xl);
  overflow: hidden;
}

.bsc-calculator--loaded {
  border-color: var(--bs-primary);
}

.bsc-calculator__loading {
  padding: 3rem;
  text-align: center;
  color: var(--bs-text-muted);
}

/* ========================================
   FORM SECTIONS
======================================== */
.bsc-form {
  padding: 1.75rem;
}

.bsc-form-section {
  margin-bottom: 1.75rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--bs-border);
}

.bsc-form-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.bsc-form-section__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--bs-text);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  font-size: 0.8125rem;
}

.bsc-form-section__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.bsc-form-section__header .bsc-form-section__title {
  margin-bottom: 0;
}

/* ========================================
   FORM GRID
======================================== */
.bsc-form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

/* ========================================
   FIELDS & INPUTS
======================================== */
.bsc-field {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.bsc-field--name {
  flex: 1;
  min-width: 120px;
}

.bsc-field--sm {
  flex: 0 0 120px;
}

.bsc-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--bs-text-secondary);
}

.bsc-input {
  width: 100%;
  padding: 0.625rem 0.875rem;
  border: 2px solid var(--bs-border);
  border-radius: var(--bs-radius-sm);
  font-size: 0.9375rem;
  font-family: var(--bs-font);
  color: var(--bs-text);
  background: var(--bs-bg);
  transition: border-color var(--bs-transition), box-shadow var(--bs-transition);
  -moz-appearance: textfield;
  appearance: textfield;
}

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

.bsc-input:focus {
  border-color: var(--bs-primary);
  box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.15);
  outline: none;
}

.bsc-input:invalid {
  border-color: #EF4444;
}

.bsc-select {
  width: 100%;
  padding: 0.625rem 0.875rem;
  border: 2px solid var(--bs-border);
  border-radius: var(--bs-radius-sm);
  font-size: 0.9375rem;
  font-family: var(--bs-font);
  color: var(--bs-text);
  background: var(--bs-bg);
  cursor: pointer;
  transition: border-color var(--bs-transition);
}

.bsc-select:focus {
  border-color: var(--bs-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.15);
}

/* ========================================
   SPLIT MODE SELECTOR
======================================== */
.bsc-mode-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.5rem;
}

.bsc-mode-btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.2rem;
  padding: 0.75rem 1rem;
  background: var(--bs-bg);
  border: 2px solid var(--bs-border);
  border-radius: var(--bs-radius);
  cursor: pointer;
  transition: all var(--bs-transition);
  font-family: var(--bs-font);
  text-align: left;
}

.bsc-mode-btn:hover {
  border-color: var(--bs-primary);
  background: var(--bs-primary-lighter);
}

.bsc-mode-btn.is-active {
  border-color: var(--bs-primary);
  background: var(--bs-primary-light);
}

.bsc-mode-btn__label {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--bs-text);
}

.bsc-mode-btn__desc {
  font-size: 0.75rem;
  color: var(--bs-text-muted);
  line-height: 1.3;
}

.bsc-mode-btn--sm {
  flex-direction: row;
  justify-content: center;
  align-items: center;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--bs-text);
}

/* ========================================
   PEOPLE CARDS
======================================== */
.bsc-people {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.bsc-person-card {
  background: var(--bs-bg-alt);
  border: 1px solid var(--bs-border);
  border-radius: var(--bs-radius);
  padding: 0.875rem;
}

.bsc-person-card__row {
  display: flex;
  gap: 0.75rem;
  align-items: flex-end;
  flex-wrap: wrap;
}

/* ========================================
   BUTTONS
======================================== */
.bsc-btn-icon {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  font-family: var(--bs-font);
  color: var(--bs-primary);
  background: var(--bs-primary-lighter);
  border: 1px dashed var(--bs-primary);
  border-radius: var(--bs-radius-sm);
  cursor: pointer;
  transition: all var(--bs-transition);
}

.bsc-btn-icon:hover {
  background: var(--bs-primary-light);
}

.bsc-btn-remove {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--bs-border);
  border-radius: 50%;
  background: var(--bs-bg);
  color: var(--bs-text-muted);
  font-size: 1.125rem;
  cursor: pointer;
  transition: all var(--bs-transition);
  font-family: var(--bs-font);
  margin-bottom: 2px;
}

.bsc-btn-remove:hover {
  background: #FEE2E2;
  border-color: #EF4444;
  color: #EF4444;
}

.bsc-btn-calculate {
  width: 100%;
  padding: 0.875rem 2rem;
  font-size: 1.0625rem;
  font-weight: 700;
  font-family: var(--bs-font);
  color: #fff;
  background: var(--bs-primary);
  border: none;
  border-radius: var(--bs-radius);
  cursor: pointer;
  transition: all var(--bs-transition);
  margin-top: 1rem;
}

.bsc-btn-calculate:hover {
  background: var(--bs-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--bs-shadow-md);
}

.bsc-btn-calculate:active {
  transform: translateY(0);
}

/* ========================================
   ACTIONS ROW
======================================== */
.bsc-actions {
  display: flex;
  flex-direction: column;
}

/* ========================================
   RESULTS
======================================== */
.bsc-results {
  display: none;
}

.bsc-results--visible {
  display: block;
  padding: 1.75rem;
  border-top: 2px solid var(--bs-primary);
  background: var(--bs-primary-lighter);
  animation: bscSlideIn 0.3s ease;
}

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

.bsc-results__header {
  margin-bottom: 1.25rem;
}

.bsc-results__header h3 {
  font-size: 1.25rem;
  color: var(--bs-dark-green);
  margin-bottom: 0.25rem;
}

.bsc-results__total {
  color: var(--bs-text-secondary);
  font-size: 0.9375rem;
}

.bsc-results__total strong {
  color: var(--bs-dark-green);
  font-size: 1.25rem;
}

/* Breakdown Row */
.bsc-results__breakdown {
  background: var(--bs-bg);
  border-radius: var(--bs-radius);
  padding: 1rem;
  margin-bottom: 1.25rem;
}

.bsc-results__row {
  display: flex;
  justify-content: space-between;
  padding: 0.4rem 0;
  font-size: 0.9375rem;
  color: var(--bs-text-secondary);
}

.bsc-results__row + .bsc-results__row {
  border-top: 1px solid var(--bs-border);
}

/* Results Table */
.bsc-results__table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bs-bg);
  border-radius: var(--bs-radius);
  overflow: hidden;
  margin-bottom: 1.25rem;
}

.bsc-results__table th {
  background: var(--bs-dark-green);
  color: #fff;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 0.75rem 1rem;
  text-align: left;
}

.bsc-results__table td {
  padding: 0.75rem 1rem;
  font-size: 0.9375rem;
  border-bottom: 1px solid var(--bs-border);
}

.bsc-results__table tr:last-child td {
  border-bottom: none;
}

.bsc-results__table tr:nth-child(even) {
  background: var(--bs-bg-alt);
}

.bsc-results__amount {
  font-weight: 700;
  color: var(--bs-dark-green);
  font-size: 1rem !important;
}

/* Result Actions */
.bsc-results__actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.bsc-btn-copy,
.bsc-btn-reset {
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  font-family: var(--bs-font);
  border-radius: var(--bs-radius-sm);
  cursor: pointer;
  transition: all var(--bs-transition);
  border: none;
}

.bsc-btn-copy {
  background: var(--bs-primary);
  color: #fff;
}

.bsc-btn-copy:hover {
  background: var(--bs-primary-hover);
}

.bsc-btn-reset {
  background: var(--bs-bg);
  color: var(--bs-text-secondary);
  border: 1px solid var(--bs-border);
}

.bsc-btn-reset:hover {
  background: var(--bs-bg-alt);
  border-color: var(--bs-border-dark);
}

/* ========================================
   ERROR
======================================== */
.bsc-error {
  background: #FEF2F2;
  border: 1px solid #FECACA;
  color: #991B1B;
  padding: 1rem 1.25rem;
  border-radius: var(--bs-radius);
  font-weight: 500;
  font-size: 0.9375rem;
}

/* ========================================
   RECURRING ITEMS (HOUSEHOLD)
======================================== */
.bsc-recurring-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.bsc-recurring-item {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.bsc-recurring-item .bsc-input {
  flex: 1;
}

.bsc-recurring-item .bsc-input:last-of-type {
  flex: 0 0 140px;
}

/* ========================================
   COUPLE TOGGLE
======================================== */
.bsc-couple-toggle {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.bsc-couple-custom {
  gap: 1rem;
}

/* ========================================
   RESPONSIVE
======================================== */
@media (max-width: 640px) {
  .bsc-form {
    padding: 1.25rem;
  }

  .bsc-results--visible {
    padding: 1.25rem;
  }

  .bsc-form-grid {
    grid-template-columns: 1fr;
  }

  .bsc-mode-grid {
    grid-template-columns: 1fr 1fr;
  }

  .bsc-person-card__row {
    flex-direction: column;
    align-items: stretch;
  }

  .bsc-field--sm {
    flex: 1;
  }

  .bsc-btn-remove {
    align-self: flex-end;
  }

  .bsc-results__table {
    font-size: 0.875rem;
  }

  .bsc-results__table th,
  .bsc-results__table td {
    padding: 0.5rem 0.75rem;
  }

  .bsc-recurring-item {
    flex-wrap: wrap;
  }

  .bsc-recurring-item .bsc-input:last-of-type {
    flex: 1;
  }
}

@media (max-width: 400px) {
  .bsc-mode-grid {
    grid-template-columns: 1fr;
  }
}