:root {
  color-scheme: light;
  --md-primary: #3358e0;
  --md-on-primary: #ffffff;
  --md-primary-container: #dde1ff;
  --md-on-primary-container: #00105c;
  --md-surface: #f7f7fb;
  --md-surface-container: #ffffff;
  --md-surface-container-high: #eeeef6;
  --md-surface-dim: #e7e7ef;
  --md-on-surface: #1a1b21;
  --md-on-surface-variant: #46464f;
  --md-outline: #c9c9d2;
  --md-outline-variant: #dedee6;
  --md-error: #b3261e;
  --md-error-container: #ffe9e6;
  --md-state-hover: rgba(26, 27, 33, 0.06);
  --md-state-press: rgba(26, 27, 33, 0.1);
  --md-elevation-1: 0 1px 2px rgba(0, 0, 0, 0.12), 0 1px 3px rgba(0, 0, 0, 0.08);
  --md-elevation-2: 0 2px 4px rgba(0, 0, 0, 0.1), 0 4px 10px rgba(0, 0, 0, 0.1);
  --md-elevation-3: 0 4px 8px rgba(0, 0, 0, 0.12), 0 8px 20px rgba(0, 0, 0, 0.12);
  --md-shadow: var(--md-elevation-1);
  --md-font: "Roboto", system-ui, sans-serif;
  --md-ease: cubic-bezier(0.2, 0, 0, 1);
}

html[data-theme="dark"] {
  color-scheme: dark;
  --md-primary: #b3c3ff;
  --md-on-primary: #10205f;
  --md-primary-container: #2a3d8f;
  --md-on-primary-container: #dde1ff;
  --md-surface: #121218;
  --md-surface-container: #1c1c24;
  --md-surface-container-high: #26262f;
  --md-surface-dim: #0c0c10;
  --md-on-surface: #e5e5ec;
  --md-on-surface-variant: #c7c6d1;
  --md-outline: #45454f;
  --md-outline-variant: #333340;
  --md-error: #ffb4a9;
  --md-error-container: #4c0002;
  --md-state-hover: rgba(229, 229, 236, 0.08);
  --md-state-press: rgba(229, 229, 236, 0.12);
  --md-elevation-1: 0 1px 2px rgba(0, 0, 0, 0.5), 0 1px 3px rgba(0, 0, 0, 0.4);
  --md-elevation-2: 0 2px 4px rgba(0, 0, 0, 0.45), 0 4px 10px rgba(0, 0, 0, 0.35);
  --md-elevation-3: 0 4px 8px rgba(0, 0, 0, 0.5), 0 8px 20px rgba(0, 0, 0, 0.4);
  --md-shadow: var(--md-elevation-1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--md-surface);
  color: var(--md-on-surface);
  font-family: var(--md-font);
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.2s var(--md-ease), color 0.2s var(--md-ease);
}

:focus-visible {
  outline: 2px solid var(--md-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

.material-symbols-outlined {
  font-variation-settings: "FILL" 0, "wght" 400, "GRAD" 0, "opsz" 22;
  font-size: 22px;
  line-height: 1;
}

/* Top app bar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  background: var(--md-surface-container);
  border-bottom: 1px solid var(--md-outline-variant);
  transition: box-shadow 0.2s var(--md-ease), background-color 0.2s var(--md-ease);
}

.topbar.scrolled { box-shadow: var(--md-elevation-2); }

.topbar-icon { color: var(--md-primary); font-size: 26px; }

.topbar-title {
  flex: 1;
  margin: 0;
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.icon-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: none;
  background: transparent;
  color: var(--md-on-surface-variant);
  cursor: pointer;
  overflow: hidden;
  transition: background-color 0.15s var(--md-ease), transform 0.1s var(--md-ease);
}

.icon-button:hover { background: var(--md-state-hover); }
.icon-button:active { transform: scale(0.92); }

.icon-button.filled {
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
}

.icon-button.filled:hover { filter: brightness(0.96); }

#themeIcon {
  display: inline-block;
  transition: transform 0.35s var(--md-ease);
}

.icon-button:active #themeIcon { transform: rotate(160deg); }

/* Layout */
.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 28px 20px 56px;
}

.subtitle {
  color: var(--md-on-surface-variant);
  margin: 0 0 24px;
  font-size: 0.95rem;
}

.workspace {
  display: grid;
  grid-template-columns: 200px minmax(280px, 380px) 1fr;
  gap: 20px;
  align-items: start;
}

@media (max-width: 980px) {
  .workspace { grid-template-columns: 1fr 1fr; }
  .sidebar { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .workspace { grid-template-columns: 1fr; }
  .wrap { padding: 20px 14px 40px; }
  .card { padding: 20px; }
}

.card {
  background: var(--md-surface-container);
  border-radius: 20px;
  box-shadow: var(--md-elevation-1);
  padding: 24px;
  transition: box-shadow 0.2s var(--md-ease), background-color 0.2s var(--md-ease);
  animation: rise 0.3s var(--md-ease) both;
}

.card:hover { box-shadow: var(--md-elevation-2); }

@keyframes rise {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Sidebar */
.sidebar {
  padding: 8px;
  max-height: 640px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sidebar-search {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  margin: 2px 2px 8px;
  border: 1px solid var(--md-outline);
  border-radius: 999px;
  color: var(--md-on-surface-variant);
}

.sidebar-search .material-symbols-outlined { font-size: 18px; }

.sidebar-search input {
  flex: 1;
  min-width: 0;
  border: none;
  outline: none;
  background: transparent;
  color: var(--md-on-surface);
  font: inherit;
  font-size: 0.85rem;
}

.sidebar-scroll {
  flex: 1;
  overflow-y: auto;
  scrollbar-width: thin;
}

.type-group-label.hidden-group,
.type-item.hidden-item { display: none; }

.sidebar-empty {
  padding: 16px 12px;
  color: var(--md-on-surface-variant);
  font-size: 0.85rem;
  text-align: center;
}

.type-group-label {
  position: sticky;
  top: 0;
  z-index: 1;
  padding: 10px 12px 6px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--md-on-surface-variant);
  background: var(--md-surface-container);
}

.type-item {
  display: block;
  width: 100%;
  text-align: left;
  border: none;
  background: transparent;
  color: var(--md-on-surface);
  font: inherit;
  font-size: 0.86rem;
  padding: 9px 12px;
  border-radius: 10px;
  cursor: pointer;
  transition: background-color 0.15s var(--md-ease), color 0.15s var(--md-ease);
}

.type-item:hover { background: var(--md-state-hover); }

.type-item.active {
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  font-weight: 500;
}

/* Main panel */
.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.panel-header h2 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 500;
}

.quick-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 8px;
}

.advanced-options {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px dashed var(--md-outline-variant);
}

.advanced-options[hidden] { display: none; }

.example-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: none;
  background: transparent;
  color: var(--md-primary);
  font: inherit;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 6px 2px 18px;
  margin-top: -12px;
  cursor: pointer;
}

.example-link .material-symbols-outlined { font-size: 16px; }
.example-link:hover { text-decoration: underline; }

.error-banner {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  background: var(--md-error-container);
  color: var(--md-error);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 0.82rem;
  margin-bottom: 16px;
}

.error-banner[hidden] { display: none; }

.field[hidden], .row[hidden] { display: none; }

/* Fields */
.field { margin-bottom: 20px; }

.field-label {
  display: block;
  font-size: 0.8rem;
  color: var(--md-on-surface-variant);
  margin-bottom: 8px;
}

.field-outlined {
  position: relative;
}

.field-outlined input,
.field-outlined textarea {
  width: 100%;
  font: inherit;
  color: var(--md-on-surface);
  background: transparent;
  border: 1px solid var(--md-outline);
  border-radius: 8px;
  padding: 16px 14px 8px;
  outline: none;
  resize: vertical;
  transition: border-color 0.15s var(--md-ease);
}

.field-outlined textarea { min-height: 56px; }

.field-outlined label {
  position: absolute;
  left: 12px;
  top: 14px;
  padding: 0 4px;
  color: var(--md-on-surface-variant);
  font-size: 1rem;
  background: var(--md-surface-container);
  pointer-events: none;
  transition: all 0.15s var(--md-ease);
}

.field-outlined input:hover,
.field-outlined textarea:hover { border-color: var(--md-on-surface-variant); }

.field-outlined input:focus,
.field-outlined textarea:focus {
  border-color: var(--md-primary);
  border-width: 1.5px;
  padding-left: 13.5px;
}

.field-outlined input:focus + label,
.field-outlined textarea:focus + label,
.field-outlined input:not(:placeholder-shown) + label,
.field-outlined textarea:not(:placeholder-shown) + label {
  top: -8px;
  font-size: 0.75rem;
  color: var(--md-primary);
}

.field-select {
  position: relative;
}

.field-select > label {
  display: block;
  font-size: 0.8rem;
  color: var(--md-on-surface-variant);
  margin-bottom: 8px;
}

.field-select select {
  width: 100%;
  font: inherit;
  color: var(--md-on-surface);
  background: transparent;
  border: 1px solid var(--md-outline);
  border-radius: 8px;
  padding: 12px 36px 12px 14px;
  outline: none;
  appearance: none;
  transition: border-color 0.15s var(--md-ease);
  cursor: pointer;
}

.field-select select:hover { border-color: var(--md-on-surface-variant); }

.field-select select:focus {
  border-color: var(--md-primary);
  border-width: 1.5px;
}

.select-caret {
  position: absolute;
  right: 10px;
  bottom: 12px;
  color: var(--md-on-surface-variant);
  pointer-events: none;
  transition: transform 0.15s var(--md-ease);
}

.field-select select:focus ~ .select-caret { transform: rotate(180deg); color: var(--md-primary); }

.row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 14px;
}

.row3 { grid-template-columns: repeat(auto-fit, minmax(108px, 1fr)); }

/* Segmented buttons */
.segmented {
  display: inline-flex;
  border: 1px solid var(--md-outline);
  border-radius: 999px;
  overflow: hidden;
}

.segmented input { display: none; }

.segmented label {
  position: relative;
  padding: 8px 18px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  color: var(--md-on-surface-variant);
  border-right: 1px solid var(--md-outline);
  transition: background-color 0.15s var(--md-ease), color 0.15s var(--md-ease);
  overflow: hidden;
}

.segmented label:last-of-type { border-right: none; }

.segmented label:hover { background: var(--md-state-hover); }

.segmented input:checked + label {
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
}

.segmented input:checked + label:hover { filter: brightness(0.97); }

/* Switch */
.switch-row {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  margin-bottom: 20px;
  cursor: pointer;
  width: fit-content;
}

.switch { position: relative; display: inline-flex; }
.switch input { position: absolute; opacity: 0; width: 0; height: 0; }

.switch-track {
  width: 40px;
  height: 24px;
  border-radius: 999px;
  background: var(--md-outline);
  display: inline-flex;
  align-items: center;
  padding: 2px;
  transition: background-color 0.2s var(--md-ease);
}

.switch-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--md-surface-container);
  transition: transform 0.2s var(--md-ease), width 0.1s var(--md-ease);
  box-shadow: var(--md-elevation-1);
}

.switch input:checked ~ .switch-track {
  background: var(--md-primary);
  justify-content: flex-end;
}

.switch input:checked ~ .switch-track .switch-thumb {
  background: var(--md-on-primary);
}

.switch-row:active .switch-thumb { width: 20px; }

/* Color fields */
.color-field label {
  display: block;
  font-size: 0.8rem;
  color: var(--md-on-surface-variant);
  margin-bottom: 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.color-input {
  display: flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--md-outline);
  border-radius: 8px;
  padding: 6px 8px;
  min-width: 0;
  transition: border-color 0.15s var(--md-ease);
}

.color-input:hover { border-color: var(--md-on-surface-variant); }
.color-input:focus-within { border-color: var(--md-primary); border-width: 1.5px; }

.color-input input[type="color"] {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  padding: 0;
  border: none;
  border-radius: 4px;
  background: none;
  cursor: pointer;
}

.color-input input[type="text"] {
  flex: 1;
  min-width: 0;
  border: none;
  outline: none;
  background: transparent;
  color: var(--md-on-surface);
  font: inherit;
}

/* Preview */
.preview-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.preview-card > .preview-surface { flex: 1; }

.preview-surface {
  --checker: 12px;
  position: relative;
  background-color: #ffffff;
  background-image:
    linear-gradient(45deg, #0000000d 25%, transparent 25%),
    linear-gradient(-45deg, #0000000d 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #0000000d 75%),
    linear-gradient(-45deg, transparent 75%, #0000000d 75%);
  background-size: var(--checker) var(--checker);
  background-position: 0 0, 0 calc(var(--checker) / 2), calc(var(--checker) / 2) calc(var(--checker) / -2), calc(var(--checker) / -2) 0;
  border: 1px solid var(--md-outline-variant);
  border-radius: 16px;
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  margin-bottom: 20px;
  overflow: hidden;
}

.preview-surface img {
  max-width: 100%;
  height: auto;
  opacity: 0;
  transform: scale(0.98);
  transition: opacity 0.2s var(--md-ease), transform 0.2s var(--md-ease);
}

.preview-surface img.loaded {
  opacity: 1;
  transform: scale(1);
}

.preview-placeholder {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--md-on-surface-variant);
  font-size: 0.85rem;
  text-align: center;
  padding: 0 16px;
}

.preview-placeholder .material-symbols-outlined {
  font-size: 32px;
  opacity: 0.6;
}

.preview-surface.preview-error img { display: none; }
.preview-surface.preview-error .preview-placeholder { display: flex; }

.overlay-btn {
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 2;
  background: var(--md-surface-container);
  box-shadow: var(--md-elevation-1);
}

.overlay-btn:hover { background: var(--md-surface-container-high); }

.url-field { margin-bottom: 12px; }
.url-field input { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 0.82rem; }

.link-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 16px;
}

.text-link {
  border: none;
  background: transparent;
  color: var(--md-primary);
  font: inherit;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  padding: 4px 2px;
}

.text-link:hover { text-decoration: underline; }

.btn-block { width: 100%; justify-content: center; padding: 13px 20px; font-size: 0.95rem; }

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  padding: 10px 20px;
  font: inherit;
  font-weight: 500;
  font-size: 0.88rem;
  cursor: pointer;
  border: 1px solid transparent;
  overflow: hidden;
  transition: box-shadow 0.15s var(--md-ease), transform 0.1s var(--md-ease), background-color 0.15s var(--md-ease);
}

.btn:active { transform: scale(0.97); }

.btn .material-symbols-outlined { font-size: 18px; }

.btn-filled {
  background: var(--md-primary);
  color: var(--md-on-primary);
  box-shadow: var(--md-elevation-1);
}

.btn-filled:hover { box-shadow: var(--md-elevation-2); filter: brightness(1.03); }

.btn-outlined {
  background: transparent;
  border-color: var(--md-outline);
  color: var(--md-primary);
}

.btn-outlined:hover { background: var(--md-state-hover); }

.ripple {
  position: absolute;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.25;
  transform: scale(0);
  animation: ripple 0.5s var(--md-ease);
  pointer-events: none;
}

@keyframes ripple {
  to { transform: scale(2.6); opacity: 0; }
}

.footer {
  margin-top: 36px;
  text-align: center;
  color: var(--md-on-surface-variant);
  font-size: 0.8rem;
}

.footer code {
  background: var(--md-surface-container-high);
  padding: 2px 6px;
  border-radius: 4px;
}

/* Snackbar */
.snackbar {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%) translateY(16px);
  background: var(--md-on-surface);
  color: var(--md-surface);
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 0.88rem;
  opacity: 0;
  pointer-events: none;
  box-shadow: var(--md-elevation-3);
  transition: opacity 0.2s var(--md-ease), transform 0.2s var(--md-ease);
}

.snackbar.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}