/* ═══════════════════════════════════════════════════════════════════
   Layout — Topbar, Panels, Table, Paginator
   ═══════════════════════════════════════════════════════════════════ */

/* ── Top Navigation Bar ── */
.top-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  height: var(--topbar-h);
  padding: 0 20px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border-default);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

/* ── Tabs ── */
.top-tabs {
  display: flex;
  align-items: center;
  gap: 4px;
}

.top-tab {
  padding: 8px 20px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.9em;
  font-weight: 500;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
  position: relative;
  user-select: none;
}

.top-tab:hover { color: var(--text-primary); background: var(--surface-3); }

.top-tab:active {
  transform: scale(0.95);
  filter: brightness(0.9);
  transition: all 60ms var(--ease-out);
}

.top-tab.active {
  color: var(--brand);
  background: rgba(75, 200, 192, 0.08);
}

.top-tab.active:active {
  transform: scale(0.95);
  filter: brightness(0.85);
}

.top-tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 2px;
  background: var(--brand);
  border-radius: 1px;
}

/* ── Top Actions ── */
.top-actions {
  position: absolute;
  right: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.top-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-default);
  background: var(--surface-3);
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
  user-select: none;
}

.top-btn:hover {
  color: var(--text-primary);
  background: var(--surface-4);
  border-color: var(--border-strong);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.top-btn:active {
  transform: scale(0.9);
  filter: brightness(0.85);
  transition: all 60ms var(--ease-out);
}

/* ── Main Content ── */
.main-area {
  max-width: 1280px;
  margin: 0 auto;
  padding: 20px 24px;
  padding-top: calc(var(--topbar-h) + 20px);
  min-height: 100vh;
}

/* ── Panels ── */
.panel { display: none; }
.panel.active { display: block; }

.panel-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  padding: 12px 16px;
  background: var(--surface-2);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
}

.panel-toolbar .muted { margin-left: auto; }

/* ── Data Table ── */
.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 0.88em;
  background: var(--surface-2);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.data-table thead {
  background: var(--surface-3);
}

.data-table th {
  padding: 12px 14px;
  text-align: left;
  font-weight: 600;
  font-size: 0.8em;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--border-strong);
  white-space: nowrap;
  background: var(--surface-3);
}

.data-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-default);
  color: var(--text-primary);
  vertical-align: middle;
  transition: background var(--duration-fast) var(--ease-out);
}

.data-table tbody tr:last-child td { border-bottom: none; }

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

.data-table tbody tr:hover {
  background: var(--surface-3);
}

.data-table tbody tr:hover td {
  background: transparent;
}

/* ── Column Widths ── */
.col-name    { min-width: 180px; }
.col-buff    { width: 100px; text-align: right; white-space: nowrap; }
.col-steam   { width: 100px; text-align: right; white-space: nowrap; }
.col-ratio   { width: 90px;  text-align: center; }
.col-profit  { width: 100px; text-align: right; white-space: nowrap; }
.col-vol     { width: 80px;  text-align: right; white-space: nowrap; }

.data-table th.col-buff,
.data-table th.col-steam,
.data-table th.col-profit,
.data-table th.col-vol { text-align: right; }
.data-table th.col-ratio { text-align: center; }

/* ── Row Content ── */
.col-name {
  display: flex;
  align-items: center;
  gap: 10px;
}

.item-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-xs);
  object-fit: contain;
  background: var(--surface-3);
  flex-shrink: 0;
}

.item-icon-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1em;
  font-weight: 700;
  color: var(--text-disabled);
  background: var(--surface-3);
  border: 1px dashed var(--border-strong);
}

.row-name {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 500;
  min-width: 0;
  display: block;
}

/* ── Price Links ── */
.price-link {
  color: inherit;
  text-decoration: none;
  transition: opacity var(--duration-fast) var(--ease-out);
}

.price-link:hover {
  opacity: 0.75;
  text-decoration: underline;
}

.price-link.price-lowest {
  color: var(--success);
  font-weight: 700;
}

/* ── Table Messages ── */
.table-msg {
  text-align: center;
  padding: 48px 12px;
  color: var(--text-tertiary);
  font-size: 0.9em;
}

/* ── Paginator ── */
.paginator {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding: 12px;
  background: var(--surface-2);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
}

/* ── Settings Form ── */
.settings-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: start;
}

.settings-section {
  padding: 24px;
  background: var(--surface-2);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
}

.settings-heading {
  font-size: 0.9em;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-default);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.settings-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 0.88em;
}

.settings-row label {
  min-width: 120px;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.settings-actions {
  grid-column: 1 / -1;
  margin-top: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 768px) {
  .settings-form {
    grid-template-columns: 1fr;
  }
}

/* ── Toast ── */
.toast {
  min-width: 280px;
  max-width: 420px;
  padding: 14px 18px;
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  animation: toastIn var(--duration-slow) var(--ease-out);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.toast .t {
  font-weight: 600;
  font-size: 0.9em;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.toast .d {
  font-size: 0.82em;
  color: var(--text-tertiary);
}

.toast-exit {
  animation: toastOut var(--duration-normal) var(--ease-in-out) forwards;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(-8px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateY(0) scale(1); }
  to   { opacity: 0; transform: translateY(-8px) scale(0.96); }
}