:root {
  --background: #f8fafc;
  --foreground: #0f172a;
  --card: #ffffff;
  --card-foreground: #0f172a;
  --muted: #64748b;
  --muted-surface: #f1f5f9;
  --border: #e2e8f0;
  --input: #cbd5e1;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-foreground: #ffffff;
  --danger: #dc2626;
  --danger-surface: #fef2f2;
  --ring: rgba(37, 99, 235, 0.18);
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --shadow-card: 0 1px 2px rgba(15, 23, 42, 0.04), 0 10px 30px rgba(15, 23, 42, 0.04);
}

* {
  box-sizing: border-box;
}

html {
  height: 100%;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--foreground);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 18% -10%, rgba(37, 99, 235, 0.08), transparent 24rem),
    linear-gradient(180deg, #ffffff 0%, var(--background) 100%);
  text-rendering: optimizeLegibility;
}

body.reader-body {
  height: 100vh;
  overflow: hidden;
}

a {
  color: var(--foreground);
  text-decoration: none;
}

a:hover {
  color: var(--primary);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0.6rem;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.05;
  letter-spacing: -0.05em;
}

h2 {
  margin-bottom: 0.5rem;
  font-size: 1.25rem;
  line-height: 1.25;
  letter-spacing: -0.025em;
}

h3 {
  margin-bottom: 0.35rem;
  font-size: 1rem;
  line-height: 1.35;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  padding: 0 1.5rem;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  min-width: 0;
  color: var(--foreground);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.brand::before {
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 0.2rem;
  background: var(--primary);
  content: "";
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  overflow-x: auto;
}

.nav a,
.link-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 2.25rem;
  padding: 0 0.75rem;
  border: 0;
  border-radius: 0.625rem;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
}

.nav a:hover,
.link-button:hover {
  background: var(--muted-surface);
  color: var(--foreground);
  text-decoration: none;
}

.page-shell {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.5rem;
}

body.reader-body .page-shell {
  max-width: none;
  height: calc(100vh - 56px);
  padding: 0;
  overflow: hidden;
}

.hero-panel,
.reader-heading,
.auth-card,
.empty-state,
.document-card,
.panel,
.card {
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  background: var(--card);
  box-shadow: var(--shadow-card);
}

.hero-panel,
.reader-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
  padding: 1.5rem;
}

.eyebrow,
.pane-kicker {
  margin-bottom: 0.35rem;
  color: var(--primary);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.muted {
  color: var(--muted);
}

.auth-card {
  max-width: 520px;
  margin: 2.5rem auto;
  padding: 1.5rem;
}

.wide-card {
  max-width: 720px;
}

.document-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.document-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 220px;
  padding: 1.25rem;
}

.document-card h2 a {
  color: var(--foreground);
}

.document-card h2 a:hover {
  color: var(--primary);
}

.card-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 1rem;
}

.empty-state {
  grid-column: 1 / -1;
  padding: 2rem;
  text-align: center;
}

.reader-page {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 0 1.5rem 1rem;
}

.reader-titlebar {
  display: flex;
  flex: 0 0 64px;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 64px;
}

.reader-titlecopy {
  min-width: 0;
}

.reader-titlebar h1 {
  overflow: hidden;
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.reader-titlebar .eyebrow {
  margin-bottom: 0.15rem;
  font-size: 0.65rem;
}

.reader-titlebar .muted {
  overflow: hidden;
  margin: 0;
  font-size: 0.8rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.reader-workspace {
  --chat-width: 35%;
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 12px minmax(320px, var(--chat-width));
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  background: var(--card);
  box-shadow: var(--shadow-card);
}

.reader-workspace.is-resizing {
  user-select: none;
}

.reader-workspace.is-chat-collapsed {
  grid-template-columns: minmax(0, 1fr) 12px 0;
}

.separator {
  background: var(--border);
}

.workspace-resizer {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 12px;
  min-width: 12px;
  padding: 0;
  border: 0;
  border-right: 1px solid var(--border);
  border-left: 1px solid var(--border);
  cursor: col-resize;
}

.workspace-resizer span {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 2px;
  height: 2.5rem;
  border-radius: 999px;
  background: #cbd5e1;
  opacity: 0;
  transform: translate(-50%, -50%);
  transition: opacity 0.16s ease, background 0.16s ease;
}

.workspace-resizer:hover span,
.reader-workspace.is-resizing .workspace-resizer span {
  background: var(--primary);
  opacity: 1;
}

.reader-workspace.is-chat-collapsed .chat-pane {
  visibility: hidden;
  pointer-events: none;
}

.workspace-toggle {
  position: absolute;
  top: 50%;
  right: -0.85rem;
  z-index: 35;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.7rem;
  height: 2.6rem;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #ffffff;
  color: var(--muted);
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.10);
  transform: translateY(-50%);
  transition: color 0.16s ease, border-color 0.16s ease, background 0.16s ease;
}

.workspace-toggle:hover {
  border-color: var(--input);
  background: var(--muted-surface);
  color: var(--foreground);
}

.workspace-toggle span {
  position: static;
  width: auto;
  height: auto;
  background: transparent;
  opacity: 1;
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1;
  transform: none;
}

.reader-workspace.is-chat-collapsed .workspace-toggle {
  right: -0.35rem;
}

.pdf-pane {
  display: flex;
  min-width: 0;
  min-height: 0;
  flex-direction: column;
  overflow: hidden;
  background: #f8fafc;
}

.pane-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3.5rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  background: #ffffff;
}

.pane-kicker {
  margin-bottom: 0.15rem;
  color: var(--muted);
  font-size: 0.65rem;
}

.pane-toolbar .pane-kicker {
  margin: 0;
}

.status-pill,
.chat-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 1.75rem;
  padding: 0 0.65rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #ffffff;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 650;
  white-space: nowrap;
}

.status-pill::before {
  width: 0.45rem;
  height: 0.45rem;
  margin-right: 0.4rem;
  border-radius: 999px;
  background: var(--primary);
  content: "";
}

.pdf-frame {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 0;
  flex: 1 1 auto;
  border: 0;
  background: #ffffff;
}

.chat-pane {
  display: flex;
  min-width: 0;
  min-height: 0;
  flex-direction: column;
  overflow: hidden;
  background: #ffffff;
}

.panel {
  padding: 1rem;
}

.chat-panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3.75rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  background: #ffffff;
}

.chat-heading-title {
  margin: 0;
  color: var(--foreground);
  font-size: 0.92rem;
  font-weight: 750;
  letter-spacing: -0.01em;
}

.chat-badge {
  color: var(--primary);
}

.chat-header-actions {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.compact-button {
  min-height: 2rem;
  padding: 0 0.7rem;
  border-radius: 0.65rem;
  font-size: 0.82rem;
}

.icon-button {
  min-width: 2rem;
}

.history-menu {
  position: relative;
}

.history-menu summary {
  list-style: none;
}

.history-menu summary::-webkit-details-marker {
  display: none;
}

.history-popover {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  z-index: 40;
  width: min(20rem, 82vw);
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: #ffffff;
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.12);
}

.history-popover-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.8rem 0.9rem;
  border-bottom: 1px solid var(--border);
  color: var(--foreground);
  font-size: 0.86rem;
  font-weight: 700;
}

.history-popover-header small {
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 600;
}

.history-list {
  display: grid;
  max-height: 22rem;
  overflow-y: auto;
  padding: 0.4rem;
}

.history-item {
  display: grid;
  gap: 0.2rem;
  padding: 0.65rem 0.7rem;
  border-radius: 0.7rem;
  color: var(--foreground);
}

.history-item:hover,
.history-item.is-active {
  background: var(--muted-surface);
  color: var(--foreground);
  text-decoration: none;
}

.history-item span {
  overflow: hidden;
  font-size: 0.86rem;
  font-weight: 650;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.history-item small,
.history-empty {
  margin: 0;
  color: var(--muted);
  font-size: 0.75rem;
}

.history-empty {
  padding: 0.8rem;
}

.chat-log {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  gap: 0.85rem;
  min-height: 0;
  overflow-y: auto;
  padding: 1.25rem 1rem 1rem;
  background: linear-gradient(180deg, #ffffff 0%, #fbfdff 100%);
  scroll-behavior: smooth;
}

.scroll-area {
  overflow: auto;
}

.chat-log::-webkit-scrollbar {
  width: 0.75rem;
}

.chat-log::-webkit-scrollbar-thumb {
  border: 0.25rem solid transparent;
  border-radius: 999px;
  background: #cbd5e1;
  background-clip: padding-box;
}

.chat-empty {
  display: grid;
  place-items: center;
  gap: 0.5rem;
  width: min(100%, 28rem);
  margin: auto;
  color: var(--muted);
  text-align: center;
}

.chat-empty-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--muted-surface);
  color: var(--foreground);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.chat-empty h3,
.chat-empty p {
  margin: 0;
}

.chat-empty h3 {
  color: var(--foreground);
  font-size: 1.05rem;
}

.chat-empty p {
  line-height: 1.65;
}

.chat-message {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  max-width: 88%;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  font-size: 0.92rem;
  line-height: 1.65;
}

.chat-message-user {
  align-self: flex-end;
  border-color: #dbeafe;
  background: #eff6ff;
  color: #1e3a8a;
}

.chat-message-assistant {
  align-self: flex-start;
  border-color: transparent;
  background: transparent;
  color: var(--foreground);
}

.chat-message-pending {
  opacity: 0.78;
}

.chat-message-pending .chat-content::after {
  display: inline-block;
  width: 1.5rem;
  content: "...";
  animation: thinking 1.25s ease-in-out infinite;
}

.chat-message-error {
  align-self: flex-start;
  border-color: rgba(220, 38, 38, 0.22);
  background: var(--danger-surface);
  color: var(--danger);
}

.chat-content {
  margin: 0;
  word-break: break-word;
}

.markdown-body > :first-child {
  margin-top: 0;
}

.markdown-body > :last-child {
  margin-bottom: 0;
}

.markdown-body p,
.markdown-body ul,
.markdown-body ol,
.markdown-body blockquote,
.markdown-body pre {
  margin: 0 0 0.65rem;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3 {
  margin: 0.85rem 0 0.45rem;
  letter-spacing: -0.02em;
}

.markdown-body h1 {
  font-size: 1.18rem;
}

.markdown-body h2 {
  font-size: 1.05rem;
}

.markdown-body h3 {
  font-size: 0.98rem;
}

.markdown-body ul,
.markdown-body ol {
  padding-left: 1.2rem;
}

.markdown-body li + li {
  margin-top: 0.25rem;
}

.markdown-body code {
  padding: 0.1rem 0.28rem;
  border: 1px solid var(--border);
  border-radius: 0.35rem;
  background: #ffffff;
  color: #0f172a;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.86em;
}

.markdown-body pre {
  overflow-x: auto;
  padding: 0.8rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: #0f172a;
  color: #e2e8f0;
}

.markdown-body pre code {
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
}

.markdown-body blockquote {
  padding-left: 0.8rem;
  border-left: 3px solid var(--border);
  color: var(--muted);
}

.markdown-body a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.chat-form {
  flex: 0 0 auto;
  padding: 0.25rem 1rem 0.75rem;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0), #ffffff 28%);
}

.composer-shell {
  display: grid;
  gap: 0.5rem;
  padding: 0.6rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  background: #ffffff;
  box-shadow: 0 14px 34px rgba(15, 23, 42, 0.10);
}

.composer-actions,
.upload-progress-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.composer-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.mode-select {
  width: auto;
  min-width: 7rem;
  height: 2rem;
  padding: 0 1.9rem 0 0.7rem;
  border: 1px solid var(--border);
  border-radius: 0.65rem;
  background:
    linear-gradient(45deg, transparent 50%, var(--muted) 50%) right 0.8rem center / 0.35rem 0.35rem no-repeat,
    linear-gradient(135deg, var(--muted) 50%, transparent 50%) right 0.55rem center / 0.35rem 0.35rem no-repeat,
    #ffffff;
  color: var(--foreground);
  cursor: pointer;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 650;
  appearance: none;
}

.mode-select:hover {
  border-color: var(--input);
  background-color: var(--muted-surface);
}

.mode-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--ring);
  outline: none;
}

.composer-actions span,
.chat-disclaimer {
  margin: 0;
  color: var(--muted);
  font-size: 0.74rem;
}

.chat-disclaimer {
  margin-top: 0.55rem;
  text-align: center;
}

.stack-form,
.compact-form {
  display: grid;
  gap: 1rem;
}

.stack-form p,
.compact-form p {
  display: grid;
  gap: 0.4rem;
  margin: 0;
}

label {
  color: var(--foreground);
  font-size: 0.9rem;
  font-weight: 650;
}

input,
textarea,
.textarea {
  width: 100%;
  border: 1px solid var(--input);
  border-radius: var(--radius-xl);
  background: #ffffff;
  color: var(--foreground);
  font: inherit;
  font-size: 0.95rem;
  padding: 0.75rem 0.85rem;
}

textarea {
  min-height: 7rem;
  resize: vertical;
}

.composer-shell textarea {
  min-height: 1.55rem;
  max-height: 12rem;
  padding: 0.15rem 0.25rem;
  border: 0;
  border-radius: 0;
  resize: none;
  line-height: 1.55;
  overflow-y: auto;
}

input:focus,
textarea:focus,
.composer-shell:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--ring);
  outline: none;
}

.composer-shell textarea:focus {
  box-shadow: none;
}

input[type="file"] {
  padding: 0.65rem;
}

progress {
  width: 100%;
  height: 0.75rem;
  accent-color: var(--primary);
}

.helptext,
ul.errorlist {
  color: var(--muted);
  font-size: 0.85rem;
}

ul.errorlist {
  margin: 0;
  padding-left: 1rem;
  color: var(--danger);
}

.primary-button,
.secondary-button,
.danger-button,
.link-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.5rem;
  padding: 0 1rem;
  border-radius: var(--radius-xl);
  cursor: pointer;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 650;
  line-height: 1;
  transition: background 0.16s ease, border-color 0.16s ease, color 0.16s ease, transform 0.16s ease;
}

.primary-button {
  border: 1px solid var(--primary);
  background: var(--primary);
  color: var(--primary-foreground);
}

.primary-button:hover {
  border-color: var(--primary-hover);
  background: var(--primary-hover);
  color: var(--primary-foreground);
  text-decoration: none;
}

.secondary-button {
  border: 1px solid var(--border);
  background: #ffffff;
  color: var(--foreground);
}

.secondary-button:hover {
  border-color: var(--input);
  background: var(--muted-surface);
  color: var(--foreground);
  text-decoration: none;
}

.danger-button {
  border: 1px solid rgba(220, 38, 38, 0.18);
  background: var(--danger-surface);
  color: var(--danger);
}

.danger-button:hover {
  border-color: rgba(220, 38, 38, 0.34);
  background: #fee2e2;
  color: var(--danger);
}

.primary-button.compact-button,
.secondary-button.compact-button,
.danger-button.compact-button {
  min-height: 2rem;
  padding: 0 0.7rem;
  border-radius: 0.65rem;
  font-size: 0.82rem;
}

button:disabled {
  cursor: wait;
  opacity: 0.66;
  transform: none;
}

.inline-form {
  display: inline-flex;
  margin: 0;
}

.messages {
  display: grid;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

body.reader-body .messages {
  position: absolute;
  top: 4.25rem;
  right: 1.5rem;
  left: 1.5rem;
  z-index: 50;
}

.message {
  margin: 0;
  padding: 0.75rem 1rem;
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: var(--radius-xl);
  background: #eff6ff;
  color: #1e3a8a;
  font-size: 0.92rem;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.message--dismissed {
  opacity: 0;
  transform: translateY(-0.35rem);
}

.message-error {
  border-color: rgba(220, 38, 38, 0.24);
  background: var(--danger-surface);
  color: var(--danger);
}

.note-list {
  display: grid;
  gap: 0.8rem;
}

.note-card {
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: #ffffff;
}

.note-meta,
.tags {
  margin-bottom: 0.45rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.tags::before {
  content: "# ";
}

.upload-progress {
  display: grid;
  gap: 0.55rem;
  padding: 0.9rem;
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: var(--radius-xl);
  background: #eff6ff;
}

.upload-progress[hidden] {
  display: none;
}

.upload-progress-meta {
  color: var(--foreground);
  font-weight: 700;
}

.upload-progress p {
  margin: 0;
}

.upload-progress-error {
  border-color: rgba(220, 38, 38, 0.24);
  background: var(--danger-surface);
}

.danger-text {
  color: var(--danger);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@keyframes thinking {
  0%, 100% { opacity: 0.25; }
  50% { opacity: 1; }
}

@media (max-width: 1024px) {
  body.reader-body {
    height: auto;
    overflow: auto;
  }

  body.reader-body .page-shell {
    height: auto;
    overflow: visible;
  }

  .reader-page {
    min-height: calc(100vh - 56px);
    padding: 0 1rem 1rem;
  }

  .reader-workspace {
    grid-template-columns: 1fr;
    overflow: visible;
  }

  .reader-workspace.is-chat-collapsed {
    grid-template-columns: 1fr;
  }

  .reader-workspace.is-chat-collapsed .chat-pane {
    visibility: visible;
    pointer-events: auto;
  }

  .workspace-resizer {
    display: none;
  }

  .pdf-pane {
    height: 58vh;
    min-height: 28rem;
  }

  .chat-pane {
    height: min(72vh, 44rem);
    min-height: 34rem;
  }
}

@media (max-width: 720px) {
  .site-header {
    padding: 0 1rem;
  }

  .brand {
    max-width: 48vw;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .page-shell {
    padding: 1rem;
  }

  .hero-panel,
  .reader-heading {
    align-items: flex-start;
    flex-direction: column;
    padding: 1rem;
  }

  h1 {
    font-size: 2rem;
  }

  .card-actions,
  .composer-actions,
  .upload-progress-meta {
    align-items: stretch;
    flex-direction: column;
  }

  .document-card,
  .auth-card,
  .empty-state {
    padding: 1rem;
  }

  .reader-page {
    padding: 0 0.75rem 0.75rem;
  }

  .reader-titlebar {
    gap: 0.75rem;
  }

  .reader-titlebar .secondary-button {
    flex: 0 0 auto;
    min-height: 2.25rem;
    padding: 0 0.75rem;
  }

  .pane-toolbar,
  .chat-panel-heading {
    min-height: 3.25rem;
    padding: 0.75rem;
  }

  .chat-panel-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .chat-header-actions {
    flex-wrap: wrap;
  }

  .status-pill,
  .chat-badge {
    display: none;
  }

  .chat-log {
    padding: 1rem;
  }

  .chat-message {
    max-width: 94%;
  }

  .chat-form {
    padding: 0.75rem;
  }

  .composer-controls {
    justify-content: space-between;
  }

  .primary-button,
  .secondary-button,
  .danger-button {
    width: 100%;
  }

  .reader-titlebar .secondary-button,
  .chat-header-actions .secondary-button,
  .composer-controls .mode-select,
  .composer-actions .primary-button {
    width: auto;
  }
}