/*
 * panel.css
 * ---------
 * Right-side large panel overlay for theme/code/settings.
 *
 * Design Tokens from reflct.co DESIGN.md
 */

/* ================================================================
   Side Panel Overlay
   ================================================================ */

.side-panel {
  position: absolute;
  top: 0;
  right: 0;
  width: var(--side-panel-width);
  height: 100%;
  background: var(--color-surface);
  border-left: 1px solid var(--color-border-default);
  box-shadow: -4px 0 16px rgba(0, 0, 0, 0.06);
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow: hidden;
}

.side-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6) var(--space-8);
  border-bottom: 1px solid var(--color-border-default);
  flex-shrink: 0;
}

.side-panel-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text-primary);
}

.side-panel-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--space-8);
  height: var(--space-8);
  border: none;
  background: transparent;
  border-radius: var(--radius-xs);
  color: var(--color-text-tertiary);
  cursor: pointer;
  transition: all var(--motion-instant);
}

.side-panel-close:hover {
  background: var(--color-surface-raised);
  color: var(--color-text-primary);
  transform: translateY(-1px);
}

.side-panel-close:active {
  transform: translateY(0);
}

.side-panel-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-6) var(--space-8);
}

.side-panel-body::-webkit-scrollbar { width: var(--space-1); }
.side-panel-body::-webkit-scrollbar-thumb { background: var(--color-border-default); border-radius: var(--space-1); }

/* ================================================================
   Transition
   ================================================================ */

.side-panel-enter-active,
.side-panel-leave-active {
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.side-panel-enter-from,
.side-panel-leave-to {
  transform: translateX(100%);
  opacity: 0;
}

/* ================================================================
   Theme Grid
   ================================================================ */

.theme-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: var(--space-3);
}

.theme-category-label {
  grid-column: 1 / -1;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding-top: var(--space-3);
  padding-bottom: var(--space-2);
}

.theme-category-label:first-child { padding-top: 0; }

.theme-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-3);
  padding-right: var(--space-6);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  cursor: pointer;
  transition: all var(--motion-instant);
  position: relative;
  overflow: hidden;
}

.theme-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-2);
  transform: translateY(-2px);
}

.theme-card:active {
  transform: translateY(0);
}

.theme-card.active {
  border-color: var(--color-accent);
  background: var(--color-accent-light);
}

.theme-card-name {
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  text-align: center;
  line-height: 1.3;
  font-weight: 500;
}

.theme-card.active .theme-card-name {
  color: var(--color-accent);
}

.theme-card-star {
  position: absolute;
  top: var(--space-1);
  right: var(--space-1);
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-tertiary);
  cursor: pointer;
  border-radius: var(--radius-2xl);
  font-size: 14px;
  line-height: 1;
  transition: all var(--motion-instant);
}

.theme-card-star:hover {
  color: #f5a623;
  transform: scale(1.1);
}

.theme-card-star:active {
  transform: scale(0.95);
}

.theme-card-star.empty {
  color: var(--color-border-default);
}

.theme-card-star.empty:hover {
  color: #f5a623;
}

.theme-card-star.filled {
  color: #f5a623;
}

.theme-card-star:active {
  transform: translateY(0);
}

.theme-card-star.empty {
  color: var(--color-border-default);
}

.theme-card-star.empty:hover {
  color: #f5a623;
}

.theme-card-badge {
  position: absolute;
  top: 0;
  left: 0;
  font-size: 9px;
  padding: 2px 6px 2px 10px;
  background: var(--color-accent);
  color: white;
  border-radius: 10px;
  border-top-left-radius: 0;
  border-top-right-radius: 0;
  border-bottom-left-radius: 0;
  line-height: 1.3;
  font-weight: 500;
}

/* ================================================================
   Code Theme Grid
   ================================================================ */

.code-theme-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.code-panel-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.code-panel-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.code-panel-section + .code-panel-section {
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border-default);
}

.code-panel-section-title {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.code-theme-card {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: var(--space-3);
  padding: var(--space-3);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  cursor: pointer;
  transition: all var(--motion-instant);
  overflow: hidden;
}

.code-theme-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
}

.code-theme-card:active {
  transform: translateY(0);
}

.code-theme-card.active {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent-light), var(--shadow-2);
}

.code-theme-preview {
  border: 1px solid;
  border-radius: 12px;
  overflow: hidden;
  min-height: 118px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.06);
}

.code-theme-preview-topbar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 12px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.code-theme-preview-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  opacity: 0.9;
}

.code-theme-preview-dot.dot-red { background: #ff5f57; }
.code-theme-preview-dot.dot-amber { background: #febc2e; }
.code-theme-preview-dot.dot-green { background: #28c840; }

.code-theme-preview-code {
  padding: 14px 14px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.65;
}

.code-theme-preview-line {
  white-space: pre;
}

.code-theme-preview-segment {
  white-space: pre;
}

.code-theme-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 0 2px 2px;
}

.code-theme-name {
  font-size: var(--font-size-md);
  color: var(--color-text-primary);
  text-align: left;
  font-weight: 600;
}

.code-theme-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  text-align: left;
  line-height: 1.4;
}

.code-theme-card.active .code-theme-name {
  color: var(--color-accent);
}

/* ================================================================
   Misc Panel
   ================================================================ */

.misc-panel-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.misc-panel-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.misc-panel-section + .misc-panel-section {
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border-default);
}

.misc-setting-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.misc-control-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.misc-control-stack.disabled {
  opacity: 0.56;
}

.misc-setting-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: 500;
}

.misc-range-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.misc-range-value {
  font-size: 12px;
  color: var(--color-text-tertiary);
  font-family: var(--font-mono);
}

.misc-range-input {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 76px;
  gap: 10px;
  align-items: center;
}

.misc-range-input input[type="range"] {
  width: 100%;
  accent-color: var(--color-accent);
}

.misc-button-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.misc-button-row.compact {
  gap: 8px;
}

.misc-button-grid {
  display: grid;
  gap: 10px;
}

.misc-button-grid-dual {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.misc-button-grid-font {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.segmented-option-btn {
  display: inline-flex;
  flex-direction: row;
  align-items: center;
  justify-content: flex-start;
  gap: 4px;
  width: 100%;
  min-width: 0;
  min-height: 50px;
  padding: 12px 14px;
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: 16px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(245, 248, 252, 0.96));
  color: var(--color-text-secondary);
  cursor: pointer;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.92),
    0 8px 20px rgba(15, 23, 42, 0.04);
  transition: transform var(--motion-instant), border-color var(--motion-instant), box-shadow var(--motion-instant), color var(--motion-instant), background var(--motion-instant);
  position: relative;
  overflow: hidden;
}

.segmented-option-btn.compact {
  min-height: 52px;
  align-items: center;
  text-align: center;
  padding: 11px 12px;
}

.segmented-option-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-text-primary);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.92),
    0 14px 28px rgba(15, 23, 42, 0.08);
  transform: translateY(-2px);
}

.segmented-option-btn:disabled {
  cursor: not-allowed;
  opacity: 0.6;
  transform: none;
  box-shadow: none;
}

.segmented-option-btn:active {
  transform: translateY(0);
}

.segmented-option-btn.active {
  border-color: var(--color-accent);
  background:
    linear-gradient(180deg, rgba(233, 243, 255, 0.98), rgba(244, 249, 255, 1));
  color: var(--color-accent);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.98),
    0 0 0 1px rgba(52, 120, 246, 0.18),
    0 14px 30px rgba(52, 120, 246, 0.12);
}

.segmented-option-btn.active::after {
  content: '';
  position: absolute;
  inset: auto 12px 10px;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(52, 120, 246, 0.95), rgba(116, 173, 255, 0.9));
}

.segmented-option-btn span {
  font-size: var(--font-size-sm);
  font-weight: 600;
  line-height: 1.3;
}

.segmented-option-btn small {
  font-size: 11px;
  color: var(--color-text-tertiary);
  line-height: 1.2;
}

.segmented-option-btn.active small {
  color: rgba(52, 120, 246, 0.78);
}

.misc-number-input,
.misc-text-input {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  transition: border-color var(--motion-instant), box-shadow var(--motion-instant);
}

.misc-number-input:focus,
.misc-text-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(52, 120, 246, 0.12);
}

.misc-number-input:disabled,
.misc-text-input:disabled {
  cursor: not-allowed;
  background: var(--color-surface-raised);
}

.misc-shadow-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.misc-shadow-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  color: var(--color-text-tertiary);
}

.misc-color-row {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
}

.misc-color-input {
  width: 52px;
  height: 38px;
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  padding: 4px;
}

.misc-color-input:disabled {
  cursor: not-allowed;
}

.misc-shadow-preview {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(255,255,255,0.96), rgba(244, 247, 250, 0.94));
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  border: 1px solid rgba(15, 23, 42, 0.06);
}

.misc-panel-note {
  margin: 0;
  font-size: var(--font-size-sm);
  line-height: 1.6;
  color: var(--color-text-tertiary);
  padding: 12px 14px;
  border: 1px solid rgba(52, 120, 246, 0.12);
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(52, 120, 246, 0.06), rgba(52, 120, 246, 0.02));
}

/* ================================================================
   Settings
   ================================================================ */

.panel-settings-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.panel-settings-group.compact {
  gap: var(--space-2);
}

.panel-settings-group + .panel-settings-group {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border-default);
}

.settings-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--font-size-md);
  color: var(--color-text-primary);
  font-weight: 500;
}

.settings-note {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  line-height: 1.5;
  padding-left: 2px;
}

.settings-shortcuts {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3) 0;
}

.settings-shortcuts div {
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.settings-shortcuts kbd {
  display: inline-block;
  padding: var(--space-1) var(--space-2);
  font-size: var(--font-size-sm);
  font-family: var(--font-mono);
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  line-height: 1.4;
}

/* ── Toggle Switch ── */
.toggle-switch {
  position: relative;
  width: 36px;
  height: 20px;
  background: var(--color-border-default);
  border-radius: var(--radius-2xl);
  cursor: pointer;
  transition: background var(--motion-instant);
  flex-shrink: 0;
}

.toggle-switch:hover {
  background: var(--color-border-strong);
}

.toggle-switch.active {
  background: var(--color-surface-strong);
}

.toggle-switch::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  background: white;
  border-radius: var(--radius-2xl);
  transition: transform var(--motion-instant);
  box-shadow: var(--shadow-1);
}

.toggle-switch.active::after {
  transform: translateX(16px);
}

/* ================================================================
   Responsive
   ================================================================ */

@media (max-width: 768px) {
  .side-panel { width: 100% !important; }
  .side-panel-body { padding: var(--space-6); }

  .theme-grid {
    grid-template-columns: repeat(auto-fill, minmax(85px, 1fr));
    gap: var(--space-2);
  }

  .theme-card {
    padding: var(--space-3) var(--space-2);
  }

  .code-theme-grid {
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: var(--space-2);
  }

  .segmented-option-btn,
  .segmented-option-btn.compact {
    min-width: calc(50% - var(--space-1));
  }

  .misc-button-grid-dual,
  .misc-button-grid-font,
  .misc-range-input,
  .misc-color-row,
  .misc-shadow-grid {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .side-panel { --side-panel-width: 360px; }
}