:root {
  --bg-core: hsl(220, 20%, 8%);
  --bg-surface: hsl(220, 16%, 12%);
  --bg-surface-elevated: hsl(220, 16%, 16%);

  --text-primary: hsl(220, 20%, 95%);
  --text-secondary: hsl(220, 10%, 70%);
  --text-muted: hsl(220, 10%, 50%);

  --brand-primary: hsl(210, 100%, 60%);
  --brand-primary-hover: hsl(210, 100%, 65%);

  --success: hsl(150, 70%, 45%);
  --success-glow: hsla(150, 70%, 45%, 0.15);
  --warning: hsl(35, 90%, 55%);
  --warning-glow: hsla(35, 90%, 55%, 0.15);

  --border-subtle: hsl(220, 16%, 20%);
  --glass-bg: hsla(220, 16%, 12%, 0.6);
  --glass-border: hsla(220, 16%, 100%, 0.05);

  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', -apple-system, sans-serif;
  background-color: var(--bg-core);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.app-container {
  width: 100%;
  padding: 2rem;
  margin: 0 auto;
  padding: 2rem;
  display: flex;
  flex-direction: column;
}

/* Header & Stats */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.brand h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.brand p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.stats {
  display: flex;
  gap: 1rem;
}

.stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1rem 1.5rem;
  display: flex;
  flex-direction: column;
  min-width: 120px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition);
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 0.25rem;
}

.bg-success {
  border-color: var(--success);
  box-shadow: 0 0 15px var(--success-glow);
}

.bg-success .stat-value {
  color: var(--success);
}

.bg-warning {
  border-color: var(--warning);
  box-shadow: 0 0 15px var(--warning-glow);
}

.bg-warning .stat-value {
  color: var(--warning);
}

/* Table Setup */
.data-table {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.table-header,
.table-row {
  display: grid;
  grid-template-columns: 80px 300px minmax(300px, 1fr);
  align-items: stretch;
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
}

.table-header {
  background: var(--bg-surface-elevated);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.table-row {
  transition: background-color var(--transition);
}

.table-row:hover {
  background-color: var(--bg-surface-elevated);
}

.table-row.is-reviewed {
  background-color: hsla(150, 70%, 45%, 0.03);
  border-left: 3px solid var(--success);
}

.table-row.is-reviewed .page-title {
  color: var(--text-secondary);
  text-decoration: line-through;
  opacity: 0.7;
}

/* Typography & Layout per column */
.col-status {
  display: flex;
  justify-content: center;
  position: sticky;
  top: 2rem;
}

.col-info {
  position: sticky;
  top: 2rem;
}

.col-id {
  font-family: monospace;
  color: var(--text-secondary);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.col-page {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.page-title {
  font-weight: 600;
  line-height: 1.3;
  transition: color var(--transition);
}

.page-path {
  font-size: 0.8rem;
  color: var(--brand-primary);
  opacity: 0.8;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-decoration: none;
}

.page-path:hover {
  text-decoration: underline;
}

/* Custom Checkbox */
.custom-cb {
  appearance: none;
  width: 24px;
  height: 24px;
  border: 2px solid var(--border-subtle);
  border-radius: 6px;
  background: var(--bg-core);
  cursor: pointer;
  position: relative;
  transition: all var(--transition);
}

.custom-cb:checked {
  background: var(--success);
  border-color: var(--success);
  box-shadow: 0 0 12px var(--success-glow);
}

.custom-cb:checked::after {
  content: "✔";
  position: absolute;
  color: white;
  font-size: 16px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

/* Actions */
.col-actions {
  display: flex;
  flex-direction: row;
  gap: 0.5rem;
  margin-top: 1rem;
}

.action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 0.75rem;
  background: var(--bg-core);
  color: var(--brand-primary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid var(--border-subtle);
  transition: all var(--transition);
  cursor: pointer;
}

.action-btn:hover {
  border-color: var(--brand-primary);
  background: hsla(210, 100%, 60%, 0.08);
  transform: translateY(-1px);
}

.action-btn--edit {
  border-color: var(--border-subtle);
  color: var(--warning);
}

.action-btn--edit:hover {
  border-color: var(--warning);
  background: var(--warning-glow);
}

/* Screenshot Thumbnail */
.col-visuals {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.screenshot-wrapper {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  width: 100%;
  max-width: 1204px;
  background: var(--bg-core);
  transition: transform var(--transition);
}

.screenshot-wrapper:hover {
  border-color: var(--brand-primary);
  box-shadow: 0 0 20px hsla(210, 100%, 60%, 0.2);
  transform: scale(1.03);
  z-index: 10;
}

.screenshot-img {
  width: 100%;
  height: auto;
  display: block;
  opacity: 0.95;
  transition: opacity var(--transition);
}

.screenshot-wrapper:hover .screenshot-img {
  opacity: 1;
}

.loading-state {
  text-align: center;
  padding: 3rem;
  color: var(--text-secondary);
}