/* ===== PAGE HEADER ===== */
.app-page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.app-page-header__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-gray-900);
  margin: 0;
  line-height: var(--line-height-tight);
}

.app-page-header__subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  margin: var(--space-1) 0 0;
}

.app-page-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* ===== CARDS ===== */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.card--clickable {
  cursor: pointer;
  transition: all var(--transition-fast);
}

.card--clickable:hover {
  border-color: var(--color-gray-300);
  box-shadow: var(--shadow-md);
}

.card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-gray-100);
}

.card__title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
  margin: 0;
}

.card__body {
  padding: var(--space-5);
}

.card__footer {
  padding: var(--space-3) var(--space-5);
  border-top: 1px solid var(--color-gray-100);
}

/* ===== BADGE ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  white-space: nowrap;
  line-height: 1.4;
}

.badge--default {
  background: rgb(113 113 122 / 0.1);
  color: var(--color-gray-700);
}

.badge--success {
  background: rgb(34 197 94 / 0.12);
  color: var(--color-success-700);
}

.badge--info {
  background: rgb(59 130 246 / 0.12);
  color: var(--color-primary-700);
}

.badge--warning {
  background: rgb(245 158 11 / 0.15);
  color: #92400e;
}

.badge--danger {
  background: rgb(239 68 68 / 0.12);
  color: var(--color-error-700);
}

.badge--purple {
  background: rgb(139 92 246 / 0.12);
  color: #6d28d9;
}

.badge--teal {
  background: rgb(20 184 166 / 0.12);
  color: #0f766e;
}

.badge--amber {
  background: rgb(251 191 36 / 0.18);
  color: #92400e;
}

.badge--cyan {
  background: rgb(34 211 238 / 0.12);
  color: #155e75;
}

.badge--rose {
  background: rgb(244 63 94 / 0.12);
  color: #9f1239;
}

.badge--emerald {
  background: rgb(16 185 129 / 0.12);
  color: #065f46;
}

/* ===== STAT CARDS ===== */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.stat-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
}

.stat-card__label {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
  margin: 0 0 var(--space-1);
}

.stat-card__value {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
  margin: 0;
}

.stat-card__detail {
  font-size: var(--font-size-xs);
  color: var(--color-gray-400);
  margin: var(--space-1) 0 0;
}

/* ===== TABLE ===== */
.table-container {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
}

.data-table th {
  text-align: left;
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-500);
  background: transparent;
  border-bottom: 1px solid var(--color-gray-200);
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.data-table td {
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  border-bottom: 1px solid var(--color-gray-100);
  vertical-align: middle;
}

.data-table tbody tr {
  transition: background var(--transition-fast);
}

.data-table tbody tr:hover td {
  background: rgb(0 0 0 / 0.015);
}

.data-table--striped tbody tr:nth-child(even) td {
  background: rgb(0 0 0 / 0.015);
}

.data-table--striped tbody tr:nth-child(even):hover td {
  background: rgb(0 0 0 / 0.03);
}

.data-table--dense th {
  padding: var(--space-1_5) var(--space-3);
}

.data-table--dense td {
  padding: var(--space-2) var(--space-3);
}

.data-table__link {
  color: var(--color-gray-900);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
}

.data-table__link:hover {
  color: var(--color-primary-600);
}

.data-table__row--highlighted td {
  background: var(--color-primary-50);
}

/* ===== EMPTY STATE ===== */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  text-align: center;
}

.empty-state__icon {
  width: 48px;
  height: 48px;
  color: var(--color-gray-300);
  margin-bottom: var(--space-4);
}

.empty-state__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
  margin: 0 0 var(--space-2);
}

.empty-state__description {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  margin: 0 0 var(--space-6);
  max-width: 400px;
}

.empty-state__actions {
  display: flex;
  gap: var(--space-3);
}

/* ===== PROGRESS BAR ===== */
.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--color-gray-100);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar__fill {
  height: 100%;
  background: var(--color-primary-500);
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

.progress-bar__fill--success { background: var(--color-success-500); }
.progress-bar__fill--warning { background: var(--color-warning-500); }
.progress-bar__fill--danger { background: var(--color-error-500); }
.progress-bar__fill--error { background: var(--color-error-500); }

/* ===== FORM COMPONENTS ===== */
.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
  margin-bottom: var(--space-1_5);
}

.form-input {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  background: var(--color-white);
  transition: all var(--transition-fast);
  font-family: inherit;
  box-shadow: inset 0 1px 2px rgb(0 0 0 / 0.04);
}

.form-input:hover {
  border-color: var(--color-gray-300);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px rgb(59 130 246 / 0.15);
}

.form-input--error {
  border-color: var(--color-error-500);
}

.form-input--error:focus {
  box-shadow: 0 0 0 3px rgb(239 68 68 / 0.15);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16' fill='none' stroke='%2394a3b8' stroke-width='1.5'%3E%3Cpath d='M5.75 10.75L8 13L10.25 10.75' stroke-linecap='round' stroke-linejoin='round'/%3E%3Cpath d='M10.25 5.25L8 3L5.75 5.25' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 16px;
  padding-right: var(--space-8);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

.form-hint {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
  margin-top: var(--space-1);
}

.form-error {
  font-size: var(--font-size-xs);
  color: var(--color-error-600);
  margin-top: var(--space-1);
}

.form-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

/* ===== GRID LAYOUTS ===== */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

@media (max-width: 768px) {
  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }
}

/* ===== TABS ===== */
.tabs {
  display: flex;
  gap: var(--space-1);
  margin-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-gray-200);
  padding: 0 var(--space-1);
}

.tab {
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-500);
  text-decoration: none;
  border: none;
  background: transparent;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  margin-bottom: -1px;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  border-bottom: 2px solid transparent;
}

.tab:hover {
  color: var(--color-gray-900);
  background: var(--color-gray-50);
}

.tab--active {
  color: var(--color-gray-900);
  border-bottom-color: var(--color-gray-900);
  font-weight: var(--font-weight-semibold);
}

.tab--active:hover {
  background: transparent;
}

/* ===== DETAIL LIST ===== */
.detail-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
}

.detail-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.detail-item__label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.detail-item__value {
  font-size: var(--font-size-xs);
  color: var(--color-gray-900);
  font-weight: var(--font-weight-medium);
}

/* ===== WORKFLOW STEPPER ===== */

/*
 * Stepper design modeled after SvelteKit StepProgressBar:
 * - Centered layout with evenly spaced steps
 * - Continuous progress line running behind step circles
 * - Larger 40px circles with 2px border and background fill
 * - Color-coded states: completed (green), active (blue), pending (yellow), running (blue pulse), failed (red)
 * - Step labels below each circle with matching text color
 */

.stepper {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  max-width: 640px;
  width: 100%;
  margin: 0 auto var(--space-8) auto;
  padding: var(--space-2) 0;
}

/* Background progress line spanning between first and last step circles */
.stepper__track {
  position: absolute;
  top: calc(var(--space-2) + 20px); /* padding-top + half of 40px circle */
  left: calc(100% / 2 / var(--stepper-steps));
  right: calc(100% / 2 / var(--stepper-steps));
  height: 2px;
  background: var(--color-gray-200);
  border-radius: 2px;
  z-index: 0;
  transform: translateY(-50%);
}

/* Animated fill bar representing completed progress */
.stepper__track-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-success-500) 0%, var(--color-success-600) 100%);
  border-radius: 2px;
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.stepper__step {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  z-index: 1;
  flex: 1;
}

.stepper__circle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 2px solid;
  background: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  flex-shrink: 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Completed: green border, light green background, green icon/text */
.stepper__circle--completed {
  border-color: var(--color-success-600);
  background: var(--color-success-50);
  color: var(--color-success-700);
}

/* Active: blue border, light blue background, blue text */
.stepper__circle--active {
  border-color: var(--color-primary-600);
  background: var(--color-primary-50);
  color: var(--color-primary-700);
  font-weight: var(--font-weight-bold);
}

/* Pending: gray border, gray background, subdued text */
.stepper__circle--pending {
  border-color: var(--color-gray-300);
  background: var(--color-gray-50);
  color: var(--color-gray-400);
}

/* Running: blue border with pulse, matching active but animated */
.stepper__circle--running {
  border-color: var(--color-primary-600);
  background: var(--color-primary-50);
  color: var(--color-primary-700);
  animation: stepper-pulse 1.5s infinite;
  position: relative;
}

/* Spinning border indicator for running state */
.stepper__circle--running::after {
  content: "";
  position: absolute;
  inset: -4px;
  border: 2px solid transparent;
  border-top-color: var(--color-primary-600);
  border-radius: 50%;
  animation: stepper-spin 1s linear infinite;
}

/* Failed: red border, light red background */
.stepper__circle--failed {
  border-color: var(--color-error-600);
  background: var(--color-error-50);
  color: var(--color-error-700);
}

@keyframes stepper-pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.8;
  }
}

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

.stepper__label {
  margin-top: var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  white-space: nowrap;
  text-align: center;
}

/* Label text colors matching circle state */
.stepper__label--completed {
  color: var(--color-success-700);
}

.stepper__label--active {
  color: var(--color-primary-700);
  font-weight: var(--font-weight-semibold);
}

.stepper__label--running {
  color: var(--color-primary-700);
  font-weight: var(--font-weight-semibold);
}

.stepper__label--pending {
  color: var(--color-gray-500);
}

.stepper__label--failed {
  color: var(--color-error-700);
}

/* Legacy connector (still usable if track is not present) */
.stepper__connector {
  flex: 1;
  height: 3px;
  background: var(--color-gray-200);
  border-radius: 2px;
  align-self: center;
}

.stepper__connector--completed {
  background: linear-gradient(90deg, var(--color-success-500), var(--color-success-600));
}

/* Responsive: stack into grid on small screens */
@media (max-width: 640px) {
  .stepper {
    max-width: 100%;
  }

  .stepper__track {
    display: none;
  }

  .stepper__circle {
    width: 36px;
    height: 36px;
  }

  .stepper__label {
    font-size: 11px;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .stepper__circle,
  .stepper__track-fill {
    transition: none;
  }

  .stepper__circle--running {
    animation: none;
  }

  .stepper__circle--running::after {
    animation: none;
    border-color: var(--color-primary-600);
  }
}

/* ===== ICON UTILITIES ===== */
.icon-xs {
  width: 14px;
  height: 14px;
}

.icon-sm {
  width: 18px;
  height: 18px;
}

.icon-md {
  width: 24px;
  height: 24px;
}

.icon-lg {
  width: 32px;
  height: 32px;
}

/* ===== SECTION DIVIDER ===== */
.section-divider {
  height: 1px;
  background: var(--color-gray-200);
  margin: var(--space-6) 0;
}

/* ===== INLINE LIST ===== */
.inline-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.inline-list__item {
  background: var(--color-gray-100);
  color: var(--color-gray-700);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
}

/* ===== TOOLBAR ===== */
.toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.toolbar__search {
  flex: 1;
  max-width: 320px;
  position: relative;
}

.toolbar__search-icon {
  position: absolute;
  left: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-gray-400);
}

.toolbar__search-input {
  width: 100%;
  padding: var(--space-2) var(--space-3) var(--space-2) var(--space-10);
  font-size: var(--font-size-sm);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  background: var(--color-white);
}

.toolbar__search-input:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px rgb(59 130 246 / 0.1);
}

.toolbar__filter {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}