:root {
  --bg: #f6f5f0;
  --surface: #fffdfa;
  --surface-strong: #f0eee7;
  --text: #1f2528;
  --muted: #637071;
  --line: #d8d2c8;
  --accent: #12696f;
  --accent-strong: #0c5055;
  --accent-soft: #dceced;
  --warning: #ad5d00;
  --danger: #a13b3b;
  --shadow: 0 12px 28px rgba(31, 37, 40, 0.08);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

button,
input,
select,
textarea {
  font: inherit;
}

.app-shell {
  width: min(1480px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0;
}

.app-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  padding: 20px 0 28px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 10px;
  font-size: clamp(2rem, 4vw, 4.35rem);
  line-height: 0.96;
}

h2 {
  margin-bottom: 0;
  font-size: 1rem;
}

.lead {
  max-width: 720px;
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.7;
}

.header-actions,
.sticky-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.auth-panel {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  max-width: 520px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 8px;
}

.auth-panel strong {
  display: block;
  font-size: 0.82rem;
}

.auth-panel small {
  display: block;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.35;
}

.token-counter {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 7px;
  width: fit-content;
  margin: 0 0 10px;
  border: 1px solid #d7c8a8;
  border-radius: 8px;
  background: #fff7e8;
  color: #5d3b00;
  padding: 7px 10px;
  font-size: 0.78rem;
  line-height: 1.2;
}

.token-counter span {
  border-radius: 999px;
  background: #ffe1b7;
  padding: 3px 7px;
  font-weight: 900;
}

.token-counter strong {
  font-size: 0.84rem;
}

.token-counter small {
  color: #866331;
  font-weight: 750;
}

.quota-counter {
  margin-left: 8px;
  background: #eaf7f6;
  border-color: #badcda;
  color: #0c5055;
}

.quota-counter span {
  background: #ccecea;
}

.quota-counter small {
  color: #397b7a;
}

.layout {
  display: grid;
  grid-template-columns: minmax(420px, 0.95fr) minmax(460px, 1.05fr);
  gap: 18px;
  align-items: start;
}

.workspace-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: -4px 0 18px;
  border-bottom: 1px solid var(--line);
}

.workspace-tab {
  border: 1px solid var(--line);
  border-bottom: 0;
  border-radius: 8px 8px 0 0;
  background: var(--surface-strong);
  color: var(--muted);
  cursor: pointer;
  font-weight: 900;
  padding: 11px 15px;
}

.workspace-tab.active {
  background: var(--surface);
  color: var(--accent-strong);
  border-color: var(--accent);
}

.workspace-view {
  display: none;
}

.workspace-view.active {
  display: block;
}

.workspace-view.layout.active {
  display: grid;
}

.custom-gem-layout {
  grid-template-columns: minmax(420px, 0.9fr) minmax(460px, 1.1fr);
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.input-panel,
.output-panel {
  padding: 22px;
}

.output-panel {
  position: sticky;
  top: 16px;
  max-height: calc(100vh - 32px);
  overflow: auto;
}

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.output-hint {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.5;
}

.section-heading.compact {
  margin-top: 22px;
  margin-bottom: 12px;
}

.output-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.grid {
  display: grid;
  gap: 14px;
}

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

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

label {
  display: grid;
  gap: 7px;
  margin-bottom: 14px;
  color: #2c3336;
  font-size: 0.9rem;
  font-weight: 700;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
  color: var(--text);
  outline: none;
  padding: 11px 12px;
  transition:
    border-color 0.15s ease,
    box-shadow 0.15s ease;
}

input[type="range"] {
  height: 40px;
  border: 0;
  background: transparent;
  padding: 0;
  accent-color: var(--accent);
}

.range-label {
  align-content: start;
}

.label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.label-row strong {
  color: var(--accent);
  font-size: 0.95rem;
}

textarea {
  min-height: 76px;
  resize: vertical;
  line-height: 1.55;
}

.markdown-output {
  min-height: 620px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.86rem;
  line-height: 1.6;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.hint {
  display: block;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 500;
  line-height: 1.5;
}

.section-density-group {
  display: grid;
  grid-column: 1 / -1;
  gap: 10px;
  margin: 4px 0 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-strong);
  padding: 13px;
}

.section-density-heading h3 {
  margin: 0 0 4px;
  font-size: 0.95rem;
}

.section-density-heading p {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.5;
}

.section-density-row {
  display: grid;
  grid-template-columns: minmax(110px, 0.65fr) minmax(0, 0.9fr) minmax(0, 0.9fr) minmax(0, 1.35fr);
  gap: 10px;
  align-items: end;
  border-top: 1px solid var(--line);
  padding-top: 10px;
}

.section-density-row > strong {
  align-self: center;
  color: var(--accent-strong);
  line-height: 1.25;
}

.section-density-row > strong span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.section-density-row label {
  margin-bottom: 0;
}

.structure-builder {
  display: grid;
  gap: 12px;
  margin: 18px 0 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-strong);
  padding: 14px;
}

.batch-panel {
  display: grid;
  gap: 12px;
  margin: 18px 0 16px;
  border: 1px solid #d8c7ec;
  border-radius: 8px;
  background: #fbf7ff;
  padding: 14px;
}

.reference-library {
  display: grid;
  gap: 12px;
  margin: 0 0 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fffaf2;
  padding: 14px;
}

.reference-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.quick-structures,
.structure-buttons,
.structure-actions,
.structure-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.mini-button,
.section-button,
.structure-chip {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--text);
  cursor: pointer;
  font-weight: 800;
}

.mini-button {
  padding: 7px 11px;
  font-size: 0.78rem;
}

.section-button {
  padding: 9px 12px;
}

.section-button:hover,
.mini-button:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.structure-list {
  min-height: 42px;
  align-items: center;
  border: 1px dashed var(--line);
  border-radius: 8px;
  background: #fffdfa;
  padding: 10px;
}

.structure-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--accent-soft);
  border-color: rgba(18, 105, 111, 0.25);
  color: var(--accent-strong);
  padding: 7px 10px;
  cursor: pointer;
  user-select: none;
}

.structure-chip.selected {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.structure-chip span {
  display: inline-grid;
  place-items: center;
  min-width: 20px;
  height: 20px;
  border-radius: 999px;
  background: #fff;
  color: var(--muted);
  font-size: 0.72rem;
}

.structure-chip.selected span {
  color: var(--accent-strong);
}

.structure-remove {
  display: inline-grid;
  place-items: center;
  width: 20px;
  height: 20px;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--accent-strong);
  cursor: pointer;
  font-weight: 900;
  line-height: 1;
}

.structure-remove:hover {
  background: #fff;
}

.structure-empty {
  color: var(--muted);
  font-size: 0.86rem;
}

.structure-builder label {
  margin-bottom: 0;
}

.button {
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
  color: var(--text);
  cursor: pointer;
  font-weight: 800;
  padding: 10px 14px;
  transition:
    transform 0.12s ease,
    background 0.12s ease,
    border-color 0.12s ease;
}

.button:hover,
.link-button:hover {
  transform: translateY(-1px);
}

.button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.button.primary:hover {
  background: var(--accent-strong);
}

.button.ai {
  border-color: #7b4bd1;
  background: #7b4bd1;
  color: #fff;
}

.button.ai:hover {
  background: #633ab0;
}

.button.large {
  flex: 1;
  justify-content: center;
  padding: 13px 16px;
}

.ai-status {
  margin: -2px 0 14px;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.5;
}

.ai-status.ready {
  color: var(--accent-strong);
}

.ai-status.warning {
  color: var(--warning);
}

.ai-status.error {
  color: var(--danger);
}

.link-button {
  border: 0;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 800;
  padding: 6px 0;
}

.link-button.paste-link {
  border: 1px solid #efb469;
  border-radius: 999px;
  background: #ffe1b7;
  color: #7a3d00;
  padding: 6px 10px;
}

.link-button.danger {
  color: var(--danger);
}

.sticky-actions {
  position: sticky;
  bottom: 0;
  z-index: 2;
  margin: 20px -22px -22px;
  padding: 14px 22px;
  border-top: 1px solid var(--line);
  background: rgba(255, 253, 250, 0.94);
  backdrop-filter: blur(8px);
}

.char-summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}

.char-card {
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface-strong);
  padding: 11px 12px;
}

.char-card.warning {
  border-color: rgba(173, 93, 0, 0.45);
  background: #fff5e7;
  color: #6d3900;
}

.char-label {
  display: block;
  color: var(--muted);
  font-size: 0.77rem;
  font-weight: 800;
}

.char-value {
  font-size: 1.08rem;
  font-weight: 900;
}

.output-blocks {
  display: grid;
  gap: 13px;
}

.output-block {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  overflow: hidden;
}

.output-block.paste-ready {
  border-color: #efb469;
  box-shadow: 0 0 0 1px rgba(239, 180, 105, 0.16);
}

.output-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 13px;
  border-bottom: 1px solid var(--line);
  background: var(--surface-strong);
}

.output-block.paste-ready .output-block-header {
  border-bottom-color: #efd1a5;
  background: #fff2df;
}

.output-block-title {
  font-weight: 900;
}

.output-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 5px;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 750;
}

.paste-badge,
.storage-badge,
.recommended-badge {
  border-radius: 999px;
  padding: 3px 8px;
  font-size: 0.7rem;
  font-weight: 900;
}

.paste-badge {
  background: #ffe1b7;
  color: #7a3d00;
}

.storage-badge {
  background: #ebe7de;
  color: #5b6264;
}

.recommended-badge {
  background: var(--accent);
  color: #fff;
}

.output-note {
  margin-top: 6px;
  color: #76502b;
  font-size: 0.76rem;
  line-height: 1.45;
}

.output-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0;
}

.output-tab {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--muted);
  padding: 7px 12px;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 850;
}

.output-tab.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.copy-button {
  min-width: 64px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 850;
  padding: 6px 10px;
}

.copy-button.paste-copy {
  border-color: #d6903d;
  background: #ffdba8;
  color: #5c3100;
}

.output-text {
  margin: 0;
  min-height: 76px;
  max-height: 420px;
  overflow: auto;
  padding: 13px;
  color: #22282b;
  font-family:
    "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.88rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

.history {
  margin-top: 22px;
  border-top: 1px solid var(--line);
  padding-top: 6px;
}

.batch-results,
.failure-log {
  margin-top: 18px;
}

.output-accordion {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  overflow: hidden;
  margin-bottom: 14px;
}

.output-accordion > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  background: var(--surface-strong);
  padding: 12px 14px;
  font-weight: 900;
  list-style: none;
}

.output-accordion > summary::-webkit-details-marker {
  display: none;
}

.output-accordion > summary::after {
  content: "+";
  display: inline-grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 999px;
  background: #fff;
  color: var(--accent-strong);
  font-weight: 950;
}

.output-accordion[open] > summary::after {
  content: "-";
}

.output-accordion > summary small {
  margin-left: auto;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
}

.batch-accordion {
  border-color: #efb469;
}

.batch-accordion > summary {
  background: #fff2df;
}

.accordion-body {
  padding: 12px;
}

.batch-result-card {
  border: 1px solid #efb469;
  border-radius: 8px;
  background: #fff;
  overflow: hidden;
  margin-bottom: 12px;
  box-shadow: 0 0 0 1px rgba(239, 180, 105, 0.12);
}

.batch-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.batch-comparison {
  border: 1px solid #efd1a5;
  border-radius: 8px;
  background: #fffaf3;
  margin-bottom: 12px;
  overflow: hidden;
}

.batch-comparison-title {
  padding: 9px 11px;
  font-size: 0.82rem;
  font-weight: 900;
  color: #7d4c18;
  border-bottom: 1px solid #efd1a5;
}

.batch-comparison-scroll {
  overflow-x: auto;
}

.batch-comparison table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
  font-size: 0.78rem;
}

.batch-comparison th,
.batch-comparison td {
  padding: 8px 10px;
  border-bottom: 1px solid #f4dec0;
  text-align: left;
  vertical-align: top;
}

.batch-comparison th {
  color: #7d4c18;
  background: #fff2df;
  font-weight: 900;
}

.failure-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.failure-log-list {
  display: grid;
  gap: 8px;
}

.failure-log-item {
  display: grid;
  gap: 3px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
  padding: 9px 10px;
}

.failure-log-item span {
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.45;
}

.history-list {
  display: grid;
  gap: 10px;
}

.history-search {
  margin-bottom: 12px;
}

.history-item {
  display: grid;
  gap: 5px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
  padding: 11px;
}

.history-item strong {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.history-meta {
  color: var(--muted);
  font-size: 0.78rem;
}

.history-summary {
  color: #303739;
  font-size: 0.82rem;
  line-height: 1.45;
}

.history-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 5px;
}

.empty {
  color: var(--muted);
  line-height: 1.7;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 20;
  min-width: 180px;
  max-width: calc(100% - 32px);
  transform: translate(-50%, 120%);
  border-radius: 999px;
  background: #172023;
  color: #fff;
  opacity: 0;
  padding: 10px 16px;
  text-align: center;
  transition:
    opacity 0.18s ease,
    transform 0.18s ease;
}

.toast.visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (max-width: 980px) {
  .app-header,
  .layout {
    display: block;
  }

  .header-actions {
    margin-top: 18px;
  }

  .output-panel {
    position: static;
    max-height: none;
    margin-top: 18px;
  }
}

@media (max-width: 620px) {
  .app-shell {
    width: min(100% - 18px, 1480px);
    padding-top: 12px;
  }

  .input-panel,
  .output-panel {
    padding: 16px;
  }

  .grid.two,
  .grid.three,
  .char-summary,
  .section-density-row {
    grid-template-columns: 1fr;
  }

  .sticky-actions {
    margin: 18px -16px -16px;
    padding: 12px 16px;
  }

  .header-actions,
  .sticky-actions {
    flex-direction: column;
  }
}