:root {
  --surface-primary: #F7F4EE;
  --surface-secondary: #FFFFFF;
  --surface-elevated: #FBFAF7;
  --surface-manuscript: #EFE4CE;
  --text-primary: #1D211A;
  --text-secondary: #62685B;
  --text-tertiary: #8C927F;
  --text-on-accent: #FFFFFF;
  --border-default: #DDD6C8;
  --border-subtle: #ECE5D8;
  --accent-primary: #7B4E22;
  --accent-hover: #5F3B18;
  --accent-green: #566F4C;
  --accent-blue: #385B70;
  --status-warning: #9A6A1B;
  --status-error: #9D3434;
  --shadow-soft: 0 18px 60px rgba(29, 33, 26, 0.08);
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --font-primary: "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
  --font-mono: "SF Mono", "Cascadia Mono", "Consolas", monospace;
}

[data-theme="dark"] {
  --surface-primary: #141512;
  --surface-secondary: #1C1E19;
  --surface-elevated: #23251F;
  --surface-manuscript: #2B251C;
  --text-primary: #F7F4EE;
  --text-secondary: #B8BCAA;
  --text-tertiary: #858A79;
  --text-on-accent: #141512;
  --border-default: #383B32;
  --border-subtle: #2B2E27;
  --accent-primary: #D9A35F;
  --accent-hover: #F0BF7D;
  --accent-green: #9CB98D;
  --accent-blue: #8CB4C9;
  --status-warning: #F0C15F;
  --status-error: #F08A80;
  --shadow-soft: 0 18px 60px rgba(0, 0, 0, 0.24);
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

html[data-theme="dark"] {
  color-scheme: dark;
}

body {
  margin: 0;
  min-height: 100dvh;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--surface-manuscript) 24%, transparent), transparent 36%),
    var(--surface-primary);
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: 15px;
  line-height: 1.6;
}

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

img {
  display: block;
  max-width: 100%;
}

.sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.hidden {
  display: none !important;
}

.access-gate {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: var(--space-6);
}

.gate-card {
  width: min(960px, 100%);
  display: grid;
  grid-template-columns: minmax(280px, 0.96fr) minmax(320px, 1fr);
  overflow: hidden;
  background: var(--surface-secondary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.gate-visual {
  min-height: 520px;
  background: var(--surface-manuscript);
  border-right: 1px solid var(--border-subtle);
}

.gate-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gate-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-5);
  padding: var(--space-12);
}

.gate-copy h1,
.reader-toolbar h1 {
  margin: 0;
  font-size: 2.35rem;
  line-height: 1.15;
  letter-spacing: 0;
}

.gate-subtitle {
  margin: 0;
  color: var(--text-secondary);
  font-size: 17px;
}

.access-form {
  display: grid;
  gap: var(--space-2);
}

.access-form label,
.assistant-form label {
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 650;
}

.code-row,
.assistant-row {
  display: flex;
  gap: var(--space-2);
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  background: var(--surface-elevated);
  color: var(--text-primary);
  outline: none;
  transition: border-color 120ms ease-out, background-color 120ms ease-out;
}

input {
  min-height: 44px;
  padding: 0 var(--space-3);
}

textarea {
  min-height: 124px;
  resize: vertical;
  padding: var(--space-3);
}

input:focus,
textarea:focus,
button:focus-visible,
.file-drop:focus-within {
  border-color: var(--accent-blue);
  outline: 2px solid color-mix(in srgb, var(--accent-blue) 24%, transparent);
  outline-offset: 2px;
}

.form-error {
  min-height: 22px;
  margin: 0;
  color: var(--status-error);
  font-size: 13px;
}

.button,
.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 40px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  background: var(--surface-secondary);
  transition: transform 120ms ease-out, background-color 120ms ease-out, border-color 120ms ease-out;
}

.button {
  padding: 0 var(--space-4);
  font-weight: 650;
  white-space: nowrap;
}

.button svg,
.icon-button svg,
.brand-mark svg,
.search-field svg,
.file-drop svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: 0 0 auto;
}

.button.primary,
.icon-button.filled {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: var(--text-on-accent);
}

.button.secondary {
  background: color-mix(in srgb, var(--accent-green) 12%, var(--surface-secondary));
  border-color: color-mix(in srgb, var(--accent-green) 36%, var(--border-default));
  color: var(--text-primary);
}

.button.quiet {
  color: var(--text-secondary);
}

.button:hover,
.icon-button:hover,
.file-drop:hover,
.report-card:hover,
.result-card:hover {
  transform: translateY(-1px);
  border-color: var(--accent-primary);
}

.button:active,
.icon-button:active,
.report-card:active,
.result-card:active {
  transform: translateY(0);
}

.icon-button {
  width: 40px;
  padding: 0;
}

.app-shell {
  min-height: 100dvh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 72px;
  padding: var(--space-3) var(--space-6);
  background: color-mix(in srgb, var(--surface-primary) 86%, transparent);
  border-bottom: 1px solid var(--border-subtle);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--text-primary);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  background: var(--surface-secondary);
  color: var(--accent-primary);
}

.brand strong {
  display: block;
  font-size: 18px;
  line-height: 1.2;
}

.brand small {
  display: block;
  color: var(--text-tertiary);
  font-size: 12px;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.search-field {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: min(420px, 36vw);
  min-height: 40px;
  padding: 0 var(--space-3);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  background: var(--surface-secondary);
  color: var(--text-secondary);
}

.search-field input {
  min-height: unset;
  padding: 0;
  border: 0;
  background: transparent;
}

.workspace {
  width: min(1440px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr) 340px;
  gap: var(--space-4);
  padding: var(--space-4);
}

.archive-panel,
.reader-panel,
.search-panel {
  min-width: 0;
  background: var(--surface-secondary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
}

.archive-panel,
.search-panel {
  align-self: start;
  display: grid;
  gap: var(--space-4);
  padding: var(--space-4);
}

.reader-panel {
  padding: var(--space-6);
}

.panel-heading h2 {
  margin: 0;
  font-size: 24px;
  line-height: 1.3;
}

.panel-heading.compact h2 {
  font-size: 18px;
}

.eyebrow {
  margin: 0 0 var(--space-1);
  color: var(--accent-primary);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 650;
}

.report-list,
.search-results {
  display: grid;
  gap: var(--space-2);
}

.report-card,
.result-card {
  width: 100%;
  padding: var(--space-3);
  text-align: left;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--surface-elevated);
  color: var(--text-primary);
  transition: transform 120ms ease-out, border-color 120ms ease-out, background-color 120ms ease-out;
}

.report-card[aria-pressed="true"] {
  border-color: color-mix(in srgb, var(--accent-primary) 42%, var(--border-default));
  background: color-mix(in srgb, var(--accent-primary) 8%, var(--surface-elevated));
}

.report-card strong,
.result-card strong {
  display: block;
  line-height: 1.35;
}

.meta-line {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-2);
  color: var(--text-tertiary);
  font-size: 12px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 var(--space-2);
  border: 1px solid color-mix(in srgb, var(--accent-green) 24%, var(--border-default));
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent-green) 10%, var(--surface-elevated));
  color: var(--accent-green);
  font-size: 12px;
  font-weight: 650;
}

.tag.blue {
  border-color: color-mix(in srgb, var(--accent-blue) 28%, var(--border-default));
  background: color-mix(in srgb, var(--accent-blue) 10%, var(--surface-elevated));
  color: var(--accent-blue);
}

.tag.warning {
  border-color: color-mix(in srgb, var(--status-warning) 28%, var(--border-default));
  background: color-mix(in srgb, var(--status-warning) 10%, var(--surface-elevated));
  color: var(--status-warning);
}

.import-card {
  display: grid;
  gap: var(--space-3);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-subtle);
}

.file-drop {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;
  border: 1px dashed var(--border-default);
  border-radius: var(--radius-md);
  background: var(--surface-elevated);
  color: var(--text-secondary);
  transition: transform 120ms ease-out, border-color 120ms ease-out;
}

.file-drop input {
  display: none;
}

.microcopy {
  min-height: 20px;
  margin: 0;
  color: var(--text-tertiary);
  font-size: 12px;
}

.reader-toolbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--border-subtle);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
  padding: var(--space-5) 0;
}

.stat-card {
  padding: var(--space-4);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--surface-elevated);
}

.stat-card strong {
  display: block;
  font-size: 24px;
  line-height: 1.2;
}

.stat-card span {
  color: var(--text-tertiary);
  font-size: 12px;
}

.report-body {
  display: grid;
  gap: var(--space-6);
}

.lead-block {
  display: grid;
  gap: var(--space-4);
  padding: var(--space-5);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--surface-manuscript) 36%, var(--surface-secondary));
}

.lead-block p {
  margin: 0;
  font-size: 17px;
  color: var(--text-secondary);
}

.topic-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.topic-card,
.quote-card,
.term-card,
.empty-state {
  padding: var(--space-4);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--surface-elevated);
}

.topic-card h3,
.term-card h3 {
  margin: 0 0 var(--space-2);
  font-size: 18px;
  line-height: 1.45;
  text-wrap: pretty;
}

.topic-card p,
.term-card p,
.quote-card p,
.result-card p,
.assistant-answer p,
.empty-state p {
  margin: 0;
  color: var(--text-secondary);
}

.topic-card p,
.term-card p,
.quote-card p {
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.75;
  text-wrap: pretty;
}

.section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.section-title h2 {
  margin: 0;
  font-size: 24px;
}

.quote-card {
  display: grid;
  gap: var(--space-2);
}

.quote-card cite {
  color: var(--text-tertiary);
  font-style: normal;
  font-size: 12px;
}

.term-list {
  display: grid;
  gap: var(--space-3);
}

.term-card header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.assistant-form {
  display: grid;
  gap: var(--space-2);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-subtle);
}

.assistant-answer {
  min-height: 136px;
  display: grid;
  gap: var(--space-3);
  padding: var(--space-4);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--surface-elevated);
}

.source-list {
  display: grid;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.source-list li {
  padding-top: var(--space-2);
  border-top: 1px solid var(--border-subtle);
  color: var(--text-tertiary);
  font-size: 12px;
}

mark {
  padding: 0 var(--space-1);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--status-warning) 18%, transparent);
  color: var(--text-primary);
}

@media (max-width: 1180px) {
  .workspace {
    grid-template-columns: 280px minmax(0, 1fr);
  }

  .search-panel {
    grid-column: 1 / -1;
  }
}

@media (max-width: 860px) {
  .gate-card,
  .workspace {
    grid-template-columns: 1fr;
  }

  .gate-visual {
    min-height: 240px;
    border-right: 0;
    border-bottom: 1px solid var(--border-subtle);
  }

  .gate-copy,
  .reader-panel {
    padding: var(--space-5);
  }

  .topbar {
    position: static;
    align-items: stretch;
    flex-direction: column;
  }

  .topbar-actions {
    width: 100%;
  }

  .search-field {
    width: 100%;
  }

  .stat-grid,
  .topic-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .access-gate,
  .workspace {
    padding: var(--space-3);
  }

  .gate-copy h1,
  .reader-toolbar h1 {
    font-size: 2rem;
  }

  .topic-card h3,
  .term-card h3 {
    font-size: 16px;
    line-height: 1.45;
  }

  .code-row,
  .reader-toolbar {
    flex-direction: column;
  }

  .code-row .button,
  .reader-toolbar .button {
    width: 100%;
  }

  .brand small {
    display: none;
  }

  .button.quiet {
    padding-inline: var(--space-3);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

.scope-control,
.tab-list,
.download-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.scope-button,
.tab-button,
.speaker-button,
.topic-button {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--surface-elevated);
  color: var(--text-primary);
  text-align: left;
  transition: transform 120ms ease-out, border-color 120ms ease-out, background-color 120ms ease-out;
}

.scope-button,
.tab-button {
  min-height: 36px;
  padding: 0 var(--space-3);
  font-size: 13px;
  font-weight: 650;
}

.scope-button.active,
.tab-button.active {
  border-color: color-mix(in srgb, var(--accent-primary) 42%, var(--border-default));
  background: color-mix(in srgb, var(--accent-primary) 10%, var(--surface-elevated));
  color: var(--accent-primary);
}

.tab-list {
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--border-subtle);
}

.topic-button {
  width: 100%;
  cursor: pointer;
}

.topic-detail {
  display: grid;
  gap: var(--space-4);
  padding-top: var(--space-2);
}

.detail-summary {
  max-width: 72ch;
  margin: 0;
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.75;
}

.transcript {
  display: grid;
  gap: var(--space-3);
}

.message-row {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-4);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--surface-elevated);
}

.message-row header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-2);
  color: var(--text-tertiary);
  font-size: 12px;
}

.message-row header strong {
  color: var(--accent-primary);
}

.message-row p {
  max-width: 76ch;
  margin: 0;
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.75;
  white-space: pre-wrap;
  word-break: keep-all;
  overflow-wrap: anywhere;
}

.message-links {
  display: grid;
  gap: var(--space-1);
  font-size: 13px;
}

.message-links a {
  color: var(--accent-blue);
  overflow-wrap: anywhere;
}

.speaker-list {
  display: grid;
  gap: var(--space-2);
}

.speaker-button {
  display: grid;
  gap: var(--space-1);
  width: 100%;
  padding: var(--space-3);
}

.speaker-button strong {
  font-size: 15px;
  line-height: 1.35;
}

.speaker-button span,
.claim-list span {
  color: var(--text-tertiary);
  font-size: 12px;
}

.claim-list {
  display: grid;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.essay-card {
  cursor: pointer;
}

.essay-body {
  max-width: 76ch;
  margin: 0;
  padding: var(--space-4);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--surface-elevated);
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: 16px;
  line-height: 1.75;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.empty-state {
  padding: var(--space-4);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--surface-elevated);
}

.empty-state p {
  margin: 0;
  color: var(--text-secondary);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.58;
}

@media (max-width: 520px) {
  .scope-control,
  .tab-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .scope-button,
  .tab-button {
    justify-content: center;
    text-align: center;
  }
}