:root {
  color-scheme: light;
  --bg: #fcfbf8;
  --bg-soft: #f7f4ee;
  --surface: #ffffff;
  --surface-soft: #faf8f4;
  --surface-hover: #f1eee7;
  --border: #eae9e6;
  --border-strong: #dfdbd2;
  --text: #2e2929;
  --muted: #746e65;
  --muted-strong: #625c54;
  --accent: #f0ca6d;
  --accent-strong: #d5a53c;
  --accent-soft: #f5e9c0;
  --danger: #b15e52;
  --live: #427f62;
  --live-soft: #edf5ef;

  --ink: var(--text);
  --glass: rgba(252, 251, 248, 0.94);
  --glass-soft: rgba(255, 255, 255, 0.72);

  --text-xs: 0.75rem;
  --text-sm: 0.84rem;
  --text-base: 0.94rem;
  --text-lg: 1.05rem;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;

  --radius-sm: 8px;
  --radius-lg: 18px;
  --radius-full: 999px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 14px 36px rgba(43, 37, 29, 0.05);
  --shadow-lg: 0 28px 70px rgba(23, 22, 19, 0.10);

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --duration-fast: 120ms;
  --duration-base: 180ms;
  --duration-slow: 300ms;

  --sidebar-width: 212px;
  --sidebar-collapsed-width: 58px;
  --surface-radius: var(--radius-lg);
  --chip-radius: var(--radius-full);
  --control-radius: var(--radius-sm);
  --composer-radius: var(--radius-lg);
  --bottom-rail-height: 142px;
  --shadow-subtle: var(--shadow-sm);
  --transition: var(--duration-base) var(--ease-out);
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

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

body[data-auth-state="loading"] .workspace,
body[data-auth-state="loading"] .auth-shell {
  visibility: hidden;
}

body[data-auth-state="logged-out"] .workspace {
  display: none;
}

body[data-auth-state="logged-in"] .auth-shell {
  display: none;
}

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

button {
  cursor: pointer;
}

button:focus-visible,
a:focus-visible,
textarea:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--accent-strong) 70%, white);
  outline-offset: 2px;
}

a {
  color: inherit;
  text-decoration: none;
}

h1,
h2,
h3,
p,
pre {
  margin: 0;
}

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

.workspace {
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  gap: var(--space-3);
  height: 100dvh;
  padding: var(--space-4) var(--space-4) var(--space-4) var(--space-3);
  overflow: hidden;
  transition: grid-template-columns var(--transition);
}

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

.auth-card {
  width: min(100%, 420px);
  display: grid;
  gap: var(--space-4);
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: var(--surface-radius);
  background: var(--surface);
  box-shadow: var(--shadow-md);
}

.auth-brand {
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.04em;
}

.auth-title {
  font-size: 1.8rem;
  font-weight: 600;
  letter-spacing: -0.04em;
}

.auth-description,
.auth-feedback {
  color: var(--muted-strong);
  line-height: 1.55;
}

.auth-description {
  max-width: 32ch;
}

.auth-feedback:empty {
  display: none;
}

.auth-feedback[data-tone="success"] {
  color: color-mix(in srgb, var(--live) 82%, var(--text));
}

.auth-feedback[data-tone="error"] {
  color: var(--danger);
}

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

.auth-form[hidden] {
  display: none;
}

.auth-form--secondary {
  padding-top: var(--space-2);
  border-top: 1px solid var(--border);
}

.auth-helper {
  margin: 0;
  color: var(--muted);
  font-size: var(--text-sm);
  line-height: 1.45;
}

.auth-label {
  font-size: var(--text-sm);
  color: var(--muted);
}

.auth-input {
  width: 100%;
  min-height: 44px;
  padding: 0 var(--space-3);
  border: 1px solid var(--border-strong);
  border-radius: var(--control-radius);
  background: var(--surface-soft);
  color: var(--text);
}

.auth-code-input {
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

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

.auth-submit,
.auth-secondary-button,
.sidebar-account-button {
  min-height: 40px;
  padding: 0 var(--space-3);
  border: 1px solid var(--border-strong);
  border-radius: var(--control-radius);
  background: var(--surface);
  color: var(--text);
  transition:
    background var(--transition),
    border-color var(--transition),
    color var(--transition),
    opacity var(--transition);
}

.auth-submit {
  background: var(--accent-soft);
  border-color: color-mix(in srgb, var(--accent-strong) 24%, var(--border-strong));
}

.auth-secondary-button {
  background: transparent;
}

.auth-submit:disabled,
.auth-secondary-button:disabled {
  opacity: 0.62;
  cursor: default;
}

.workspace.workspace--sidebar-collapsed {
  grid-template-columns: var(--sidebar-collapsed-width) minmax(0, 1fr);
}

.deck-sidebar {
  height: calc(100dvh - 32px);
  min-width: 0;
  overflow: hidden;
  background: transparent;
}

.sidebar-shell {
  height: 100%;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: var(--space-4);
  padding: var(--space-2) var(--space-4) var(--space-3) 0;
  border-right: 1px solid rgba(223, 219, 210, 0.88);
}

.sidebar-header {
  display: grid;
  gap: var(--space-4);
}

.sidebar-account {
  display: grid;
  gap: var(--space-2);
}

.sidebar-account-email {
  min-width: 0;
  color: var(--muted);
  font-size: var(--text-xs);
  line-height: 1.5;
  word-break: break-all;
}

.sidebar-account-button {
  justify-self: flex-start;
  min-height: 32px;
  background: transparent;
}

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

.brand-lockup {
  min-width: 0;
  display: grid;
  gap: 2px;
  padding: 0;
}

.brand-wordmark {
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.04em;
}

.brand-subtitle {
  color: var(--muted);
  font-size: var(--text-xs);
}

.ghost-icon-button,
.sidebar-primary-action,
.session-action-button,
.session-action-link,
.composer-icon-button {
  border: 1px solid transparent;
  background: transparent;
  color: inherit;
  transition:
    background-color var(--transition),
    border-color var(--transition),
    color var(--transition),
    opacity var(--transition);
}

.ghost-icon-button {
  width: 28px;
  height: 28px;
  padding: 0;
  border-radius: var(--radius-sm);
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  border-color: transparent;
  background: transparent;
}

.ghost-icon-button:hover,
.session-action-button:hover,
.session-action-link:hover,
.composer-icon-button:hover {
  background: var(--surface-hover);
}

.toggle-sidebar-glyph {
  font-size: var(--text-lg);
  line-height: 1;
  color: var(--muted-strong);
}

.sidebar-primary-action {
  width: 100%;
  min-height: 34px;
  padding: 0 var(--space-2);
  border: 0;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  gap: var(--space-2);
  background: transparent;
  font-size: var(--text-sm);
  font-weight: 500;
}

.sidebar-primary-action-plus {
  color: var(--muted);
  font-size: var(--text-lg);
  line-height: 1;
}

.sidebar-primary-action:hover {
  background: var(--glass-soft);
}

.sidebar-section {
  min-height: 0;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: var(--space-3);
}

.sidebar-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: 0 var(--space-2);
  color: var(--muted);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.sidebar-count {
  font-variant-numeric: tabular-nums;
}

.deck-list {
  min-height: 0;
  overflow: auto;
  display: grid;
  align-content: start;
  gap: var(--space-3);
}

.deck-list-empty {
  color: var(--muted);
  font-size: var(--text-sm);
  line-height: 1.55;
  padding: var(--space-2);
}

.deck-group {
  display: grid;
  gap: var(--space-1);
}

.deck-group-list {
  display: grid;
  gap: 1px;
}

.deck-group-heading {
  padding: 0 var(--space-2);
  color: var(--muted);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.deck-list-item {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: inherit;
  text-align: left;
  display: grid;
  gap: 0;
}

.deck-list-item:hover {
  background: rgba(255, 255, 255, 0.6);
}

.deck-list-item.is-active {
  background: rgba(46, 41, 41, 0.075);
}

.deck-list-item-title-row {
  display: flex;
  align-items: center;
  gap: 0;
}

.deck-list-item-title {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: var(--text-base);
  line-height: 1.35;
}

.runtime-button:disabled,
.send-button:disabled,
.session-action-button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.preview-open-link.is-disabled {
  opacity: 0.45;
  cursor: default;
  pointer-events: none;
}

.session-surface {
  height: calc(100dvh - 32px);
  display: grid;
  grid-template-rows: minmax(0, 1fr);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--surface-radius);
  overflow: hidden;
}

.session-label {
  color: var(--muted);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.session-grid {
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(420px, 0.92fr) minmax(620px, 1.08fr);
  height: 100%;
}

.thread-panel,
.preview-panel {
  min-height: 0;
  display: grid;
}

.thread-panel {
  grid-template-rows: minmax(0, 1fr) auto auto;
  position: relative;
}

.preview-panel {
  grid-template-rows: minmax(0, 1fr);
  border-left: 1px solid var(--border);
  background: var(--surface-soft);
  padding: var(--space-4);
}

.thread-scroll {
  min-height: 0;
  overflow: auto;
  padding: var(--space-4) 0 var(--space-2);
}

.thread-jump-slot {
  position: relative;
  height: 0;
  min-height: 0;
  overflow: visible;
}

.jump-to-latest-button {
  position: absolute;
  left: 50%;
  bottom: var(--space-3);
  width: 42px;
  height: 42px;
  padding: 0;
  transform: translateX(-50%);
  border-radius: var(--radius-full);
  border: 1px solid rgba(46, 41, 41, 0.12);
  background: var(--glass);
  color: var(--muted-strong);
  display: inline-grid;
  place-items: center;
  line-height: 1;
  box-shadow: 0 10px 28px rgba(40, 33, 23, 0.12);
  backdrop-filter: blur(14px);
  z-index: 3;
  transition:
    transform var(--transition),
    background-color var(--transition),
    border-color var(--transition),
    box-shadow var(--transition);
}

.jump-to-latest-button:hover {
  background: rgba(255, 255, 255, 0.98);
  border-color: rgba(46, 41, 41, 0.18);
  box-shadow: 0 14px 34px rgba(40, 33, 23, 0.16);
  transform: translateX(-50%) translateY(-1px);
}

.jump-to-latest-glyph {
  font-size: 18px;
  transform: translateY(1px);
}

.transcript-column {
  width: min(100%, 668px);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.session-empty {
  display: grid;
  gap: var(--space-3);
  padding: 28px 0 20px;
  animation: messageEnter var(--duration-slow) var(--ease-out) both;
}

.session-empty-title {
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.3;
}

.session-empty p {
  max-width: 54ch;
  color: var(--muted-strong);
  line-height: 1.6;
  font-size: var(--text-base);
}

.chat-history {
  display: grid;
  align-content: start;
  gap: var(--space-6);
  padding-bottom: var(--space-4);
}

.message {
  display: grid;
  gap: var(--space-3);
  animation: messageEnter var(--duration-slow) var(--ease-out) both;
}

.message--process {
  gap: 0;
}

.message-avatar {
  display: none;
}

.message-body {
  min-width: 0;
  display: grid;
  gap: 0;
}

.message-bubble {
  max-width: 100%;
}

.message--user .message-body,
.message--assistant .message-body {
  max-width: 100%;
}

.message--user .message-body {
  max-width: 86%;
}

.message--user {
  justify-items: end;
}

.message--user .message-bubble {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  background: #f8f4ea;
}

.message--assistant .message-body {
  gap: var(--space-3);
}

.message--assistant .message-attachments {
  margin-top: 0;
}

.message-process-row {
  display: grid;
  gap: var(--space-2);
  max-width: 92%;
  padding-left: var(--space-3);
  border-left: 1px solid rgba(61, 56, 47, 0.08);
}

.message-process-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.message-process-badge {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 0 var(--space-2);
  border-radius: var(--radius-full);
  background: rgba(48, 43, 36, 0.05);
  color: var(--muted);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.01em;
}

.message-process-text {
  color: var(--muted-strong);
  font-size: var(--text-sm);
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

.message-process-detail {
  color: var(--muted);
  font-size: var(--text-sm);
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

.message--system[data-tone="thinking"] .message-process-row {
  border-left-color: rgba(92, 108, 138, 0.16);
}

.message--system[data-tone="thinking"] .message-process-badge {
  background: rgba(92, 108, 138, 0.08);
  color: #5c6c8a;
}

.message--system[data-tone="thinking"] .message-process-text {
  color: #4d586f;
}

.message--system[data-tone="activity"] .message-process-badge {
  background: rgba(48, 43, 36, 0.045);
  color: #746c63;
}

.message--system[data-tone="activity"] .message-process-text {
  color: var(--muted);
}

.message--system[data-tone="pending"] .message-process-row {
  border-left-color: rgba(214, 168, 76, 0.22);
}

.message--system[data-tone="pending"] .message-process-badge {
  background: rgba(246, 232, 191, 0.72);
  color: #7a5a0b;
}

.message--system[data-tone="pending"] .message-process-badge::before {
  content: "";
  width: 6px;
  height: 6px;
  margin-right: 6px;
  border-radius: var(--radius-full);
  background: currentColor;
  animation: pendingPulse 1s ease-in-out infinite;
}

.message--system[data-tone="pending"] .message-process-text {
  color: #85672b;
}

.message--system[data-tone="error"] .message-process-row {
  border-left-color: rgba(177, 94, 82, 0.18);
}

.message--system[data-tone="error"] .message-process-badge {
  background: rgba(177, 94, 82, 0.09);
  color: #a34d42;
}

.message--system[data-tone="error"] .message-process-text {
  color: #8f4f47;
}

.message-text {
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.7;
  font-size: var(--text-base);
  font-weight: 400;
}

.message-text--markdown {
  white-space: normal;
}

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

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

.message-text--markdown p,
.message-text--markdown ul,
.message-text--markdown ol,
.message-text--markdown pre,
.message-text--markdown blockquote,
.message-text--markdown h1,
.message-text--markdown h2,
.message-text--markdown h3,
.message-text--markdown h4,
.message-text--markdown h5,
.message-text--markdown h6 {
  margin: 0 0 var(--space-3);
}

.message-text--markdown ul,
.message-text--markdown ol {
  padding-left: 1.4em;
}

.message-text--markdown li + li {
  margin-top: var(--space-1);
}

.message-text--markdown a {
  color: #2e5da8;
  text-decoration: underline;
  text-underline-offset: 0.12em;
}

.message-text--markdown code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.92em;
  padding: 0.08em 0.32em;
  border-radius: 6px;
  background: rgba(48, 43, 36, 0.06);
}

.message-text--markdown pre {
  overflow-x: auto;
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: #f6f2e7;
}

.message-text--markdown pre code {
  padding: 0;
  background: transparent;
}

.message-text--markdown blockquote {
  padding-left: var(--space-3);
  border-left: 2px solid rgba(48, 43, 36, 0.12);
  color: var(--muted-strong);
}

.message-attachments {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.message-attachments--process {
  margin-top: 0;
}

.message-attachment {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 var(--space-3);
  border-radius: var(--chip-radius);
  background: var(--bg-soft);
  color: var(--muted-strong);
  font-size: var(--text-xs);
}

.message-attachment--process {
  min-height: 22px;
  padding: 0 var(--space-2);
  font-size: var(--text-xs);
  background: rgba(48, 43, 36, 0.045);
  color: var(--muted);
}

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

.message-record {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-soft);
}

.message-record-title {
  font-size: var(--text-sm);
  font-weight: 600;
}

.message-record-detail {
  color: var(--muted-strong);
  line-height: 1.55;
  font-size: var(--text-sm);
}

.message-record-file {
  color: var(--muted);
  font-size: var(--text-xs);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.pending-question-slot {
  width: min(100%, 680px);
  margin: 0 auto;
  padding: 0 var(--space-4) var(--space-2);
}

.pending-question-card {
  display: grid;
  gap: var(--space-4);
  border: 1px solid rgba(214, 168, 76, 0.28);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 248, 228, 0.92), rgba(255, 255, 255, 0.98));
  box-shadow: 0 20px 44px rgba(63, 48, 17, 0.08);
  padding: var(--space-4);
}

.pending-question-meta {
  display: grid;
  gap: var(--space-2);
}

.pending-question-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 24px;
  padding: 0 var(--space-2);
  border-radius: var(--radius-full);
  background: rgba(246, 232, 191, 0.84);
  color: #7a5a0b;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.01em;
  justify-self: start;
}

.pending-question-title {
  font-size: var(--text-base);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.pending-question-description {
  color: var(--muted-strong);
  font-size: var(--text-sm);
  line-height: 1.6;
}

.pending-question-form {
  display: grid;
  gap: var(--space-4);
}

.pending-question-group {
  display: grid;
  gap: var(--space-3);
}

.pending-question-group-header {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 22px;
  padding: 0 var(--space-2);
  border-radius: var(--radius-full);
  background: rgba(48, 43, 36, 0.05);
  color: var(--muted);
  font-size: var(--text-xs);
  font-weight: 600;
  justify-self: start;
}

.pending-question-text {
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1.5;
}

.pending-question-options {
  display: grid;
  gap: var(--space-2);
}

.pending-question-option {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  align-items: start;
  padding: var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid rgba(61, 56, 47, 0.08);
  background: rgba(255, 255, 255, 0.88);
  cursor: pointer;
  transition:
    border-color var(--transition),
    box-shadow var(--transition),
    transform var(--transition);
}

.pending-question-option:hover {
  border-color: rgba(214, 168, 76, 0.32);
  box-shadow: 0 12px 28px rgba(77, 60, 24, 0.08);
  transform: translateY(-1px);
}

.pending-question-option input {
  margin-top: 3px;
}

.pending-question-option-label {
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.45;
}

.pending-question-option-description {
  color: var(--muted);
  font-size: var(--text-xs);
  line-height: 1.55;
  margin-top: 2px;
}

.pending-question-option--custom {
  align-items: stretch;
}

.pending-question-custom-input {
  width: 100%;
  min-height: 72px;
  margin-top: var(--space-3);
  padding: var(--space-3);
  border: 1px solid rgba(61, 56, 47, 0.14);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.96);
  color: var(--text);
  line-height: 1.55;
  resize: vertical;
}

.pending-question-custom-input::placeholder {
  color: var(--muted);
}

.pending-question-custom-input:disabled {
  background: rgba(245, 242, 235, 0.92);
  color: var(--muted);
}

.pending-question-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.pending-question-error {
  color: #9f3728;
  font-size: var(--text-xs);
  line-height: 1.5;
}

.pending-question-submit {
  min-height: 38px;
  padding: 0 var(--space-4);
  border-radius: var(--radius-full);
  border: 1px solid rgba(214, 168, 76, 0.32);
  background: #f7dfa3;
  color: #5b4308;
  font-size: var(--text-sm);
  font-weight: 600;
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    opacity var(--transition);
}

.pending-question-submit:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 14px 34px rgba(77, 60, 24, 0.16);
}

.pending-question-submit:disabled {
  opacity: 0.6;
  cursor: wait;
}

.composer-shell {
  padding: var(--space-3) var(--space-4) var(--space-4);
  background: linear-gradient(to top, var(--surface) 70%, rgba(255, 255, 255, 0));
}

.composer-shell--hidden {
  display: none;
}

@supports (backdrop-filter: blur(1px)) {
  .composer-shell {
    background: linear-gradient(to top, rgba(255, 255, 255, 0.92) 70%, rgba(255, 255, 255, 0));
    backdrop-filter: blur(8px);
  }
}

.composer-inner {
  width: min(100%, 680px);
  margin: 0 auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  min-height: var(--bottom-rail-height);
  padding: var(--space-4);
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  gap: var(--space-4);
}

#message-input {
  width: 100%;
  min-height: 52px;
  max-height: 200px;
  resize: none;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  line-height: 1.55;
  padding: var(--space-2) var(--space-2) 0;
}

#message-input::placeholder {
  color: #9a9388;
}

.composer-row,
.composer-left,
.composer-right {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.composer-row {
  justify-content: space-between;
  flex-wrap: wrap;
}

.composer-left,
.composer-right {
  flex-wrap: wrap;
}

.composer-right {
  margin-left: auto;
}

.composer-icon-button {
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--chip-radius);
  color: var(--muted-strong);
  font-size: var(--text-sm);
}

.composer-icon-button {
  width: 32px;
  padding: 0;
}

.asset-summary {
  color: var(--muted);
  font-size: var(--text-xs);
}

.asset-summary:empty {
  display: none;
}

.send-button {
  position: relative;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 0;
  border-radius: var(--radius-full);
  background: var(--accent);
  color: var(--text);
  display: inline-grid;
  place-items: center;
  transition:
    transform var(--transition),
    background-color var(--transition),
    opacity var(--transition);
}

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

.send-button-arrow {
  font-size: var(--text-lg);
  line-height: 1;
}

.send-button.is-loading .send-button-arrow {
  opacity: 0;
}

.send-button.is-loading::after {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: var(--radius-full);
  border: 1.7px solid rgba(54, 49, 41, 0.22);
  border-top-color: rgba(54, 49, 41, 0.88);
  animation: sendSpinner 0.8s linear infinite;
}

.preview-surface {
  min-height: 0;
  height: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  overflow: hidden;
  background: transparent;
  position: relative;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: var(--space-4);
}

@keyframes pendingPulse {
  0%,
  100% {
    opacity: 0.35;
    transform: scale(0.88);
  }
  50% {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes sendSpinner {
  to {
    transform: rotate(360deg);
  }
}

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

.preview-toolbar {
  z-index: 2;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 34px;
}

.preview-toolbar-copy {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-width: 0;
  flex: 1 1 0%;
}

.preview-toolbar-actions,
.preview-page-controls {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.preview-caption {
  color: var(--muted-strong);
  font-size: var(--text-sm);
  min-width: 0;
  flex: 1 1 auto;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.preview-status-badge {
  min-height: 28px;
  padding: 0 10px;
  border-radius: var(--chip-radius);
  border: 1px solid rgba(213, 165, 60, 0.24);
  background: rgba(245, 233, 192, 0.62);
  color: color-mix(in srgb, var(--text) 78%, var(--accent-strong));
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
}

.preview-overflow-badge,
.preview-nav-button,
.preview-page-indicator {
  min-height: 32px;
  border: 1px solid rgba(234, 233, 230, 0.94);
  background: var(--glass);
  color: var(--muted-strong);
  font-size: var(--text-sm);
}

.preview-overflow-badge {
  display: inline-flex;
  align-items: center;
  padding: 0 var(--space-3);
  border-radius: var(--chip-radius);
  font-weight: 500;
  color: #8c5d04;
  border-color: rgba(222, 177, 67, 0.38);
  background: rgba(255, 245, 214, 0.96);
}

.preview-toolbar-actions {
  flex-shrink: 0;
}

.preview-page-controls {
  padding: var(--space-1);
  border-radius: var(--control-radius);
  background: var(--glass);
  border: 1px solid rgba(234, 233, 230, 0.94);
}

.preview-nav-button {
  padding: 0 var(--space-3);
  border-radius: var(--control-radius);
  transition:
    background-color var(--transition),
    border-color var(--transition),
    color var(--transition),
    opacity var(--transition);
}

.preview-nav-button:hover {
  background: var(--surface-hover);
  border-color: rgba(223, 219, 210, 0.96);
}

.preview-page-indicator {
  display: inline-flex;
  align-items: center;
  padding: 0 var(--space-3);
  border-radius: var(--control-radius);
  min-width: 62px;
  justify-content: center;
  font-variant-numeric: tabular-nums;
}

.preview-open-link {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 var(--space-3);
  border: 1px solid rgba(234, 233, 230, 0.9);
  border-radius: var(--control-radius);
  background: var(--glass);
  color: var(--muted-strong);
  font-size: var(--text-sm);
}

.preview-open-link:hover {
  background: rgba(241, 238, 231, 0.94);
}

.preview-stage-shell {
  min-height: 0;
  display: grid;
  place-items: center;
  overflow: hidden;
  --stage-width: 0px;
  --stage-height: 0px;
  padding: 2px 0 0;
  justify-items: center;
  align-content: start;
}

#preview-frame {
  width: var(--stage-width);
  height: var(--stage-height);
  max-width: 100%;
  max-height: 100%;
  box-shadow: var(--shadow-lg);
  border-radius: 0;
  background: white;
  border: 0;
  transition: box-shadow var(--transition);
}

.preview-slide-rail {
  min-height: var(--bottom-rail-height);
  padding: var(--space-3);
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 176px;
  gap: var(--space-3);
  overflow-x: auto;
  align-items: stretch;
  scroll-snap-type: x proximity;
  border-radius: var(--surface-radius);
  background: var(--glass-soft);
  border: 1px solid rgba(234, 233, 230, 0.96);
  box-shadow: var(--shadow-sm);
  scrollbar-width: none;
}

.preview-slide-rail::-webkit-scrollbar {
  display: none;
}


.preview-slide-rail:empty {
  display: none;
}

.preview-slide-card {
  min-width: 0;
  display: grid;
  align-content: start;
  gap: var(--space-2);
  min-height: 100%;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: inherit;
  text-align: left;
  scroll-snap-align: center;
  transition:
    transform var(--transition),
    opacity var(--transition);
}

.preview-slide-card:hover {
  transform: translateY(-1px);
}

.preview-slide-card-index {
  color: var(--muted);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.preview-slide-thumb {
  aspect-ratio: 16 / 9;
  border-radius: var(--control-radius);
  overflow: hidden;
  border: 1px solid rgba(223, 219, 210, 0.98);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow-md);
  transition:
    border-color var(--transition),
    box-shadow var(--transition),
    transform var(--transition);
}

.preview-slide-card:hover .preview-slide-thumb {
  border-color: rgba(205, 196, 179, 1);
  box-shadow: 0 14px 34px rgba(35, 31, 23, 0.07);
}

.preview-slide-card.is-active .preview-slide-thumb {
  border-color: rgba(213, 165, 60, 0.34);
  box-shadow:
    0 0 0 2px rgba(240, 202, 109, 0.18),
    0 16px 36px rgba(35, 31, 23, 0.08);
}

.preview-slide-thumb-frame {
  width: 100%;
  height: 100%;
  display: block;
  border: 0;
  background: white;
  pointer-events: none;
}

.preview-empty {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: var(--surface-soft);
  border: 0;
  border-radius: 0;
}

.preview-empty-copy {
  max-width: 34ch;
  display: grid;
  gap: var(--space-3);
  text-align: center;
}

.preview-empty-copy h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.preview-empty-copy p {
  color: var(--muted-strong);
  line-height: 1.6;
  font-size: var(--text-base);
}

.workspace--sidebar-collapsed .sidebar-shell {
  padding-left: 0;
  padding-right: var(--space-2);
}

.workspace--sidebar-collapsed .brand-subtitle,
.workspace--sidebar-collapsed .sidebar-section-head,
.workspace--sidebar-collapsed .deck-group-heading,
.workspace--sidebar-collapsed .deck-list-item-title {
  display: none;
}

.workspace--sidebar-collapsed .sidebar-header,
.workspace--sidebar-collapsed .sidebar-section {
  justify-items: center;
}

.workspace--sidebar-collapsed .sidebar-brand-row {
  width: 100%;
  flex-direction: column;
  justify-content: flex-start;
  gap: var(--space-2);
}

.workspace--sidebar-collapsed .sidebar-section {
  display: none;
}

.workspace--sidebar-collapsed .brand-lockup {
  display: none;
}

.workspace--sidebar-collapsed .ghost-icon-button {
  width: 100%;
  height: 34px;
}

.workspace--sidebar-collapsed .sidebar-primary-action {
  width: 100%;
  min-height: 34px;
  padding: 0;
  justify-content: center;
}

.workspace--sidebar-collapsed .sidebar-primary-action-label {
  display: none;
}

.workspace--sidebar-collapsed .deck-list-item {
  display: inline-grid;
  place-items: center;
  min-height: 22px;
  width: 100%;
  padding: 0;
  border-radius: var(--radius-full);
}

.workspace--sidebar-collapsed .deck-list-item:hover,
.workspace--sidebar-collapsed .deck-list-item.is-active {
  background: transparent;
}

.workspace--sidebar-collapsed .deck-list-item::before {
  content: "";
  width: 14px;
  height: 3px;
  border-radius: var(--radius-full);
  background: rgba(126, 120, 111, 0.3);
  transition:
    width var(--transition),
    background-color var(--transition),
    opacity var(--transition);
}

.workspace--sidebar-collapsed .deck-list-item:hover::before {
  background: rgba(98, 92, 84, 0.48);
}

.workspace--sidebar-collapsed .deck-list-item.is-active::before {
  width: 22px;
  background: var(--text);
}

@media (max-width: 1200px) {
  .session-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .preview-panel {
    border-left: 0;
    border-top: 1px solid var(--border);
    min-height: 420px;
  }

  .preview-toolbar {
    flex-wrap: wrap;
  }
}

@media (max-width: 960px) {
  .workspace {
    grid-template-columns: minmax(0, 1fr);
    height: auto;
    min-height: 100dvh;
    padding: var(--space-2);
    gap: var(--space-2);
    overflow: visible;
  }

  .deck-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    z-index: 100;
    background: var(--bg);
    transform: translateX(-100%);
    transition: transform var(--duration-slow) var(--ease-out);
    border-right: 1px solid var(--border);
    height: 100%;
  }

  .deck-sidebar.sidebar--mobile-open {
    transform: translateX(0);
  }

  .sidebar-shell {
    grid-template-rows: auto minmax(0, 1fr);
    padding-right: var(--space-4);
  }

  .session-surface {
    height: auto;
    min-height: calc(100dvh - var(--space-4));
  }

  .preview-surface {
    margin: 0;
  }

  .composer-shell {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  .ghost-icon-button,
  .sidebar-primary-action,
  .preview-nav-button,
  .preview-open-link,
  .composer-icon-button {
    min-height: 44px;
  }

  .ghost-icon-button {
    width: 44px;
    height: 44px;
  }

  body {
    overflow: auto;
  }
}

@media (max-width: 768px) {
  .transcript-column {
    padding: 0 var(--space-3);
  }

  .composer-inner {
    border-radius: var(--radius-sm);
    padding: var(--space-3);
  }

  .preview-panel {
    padding: var(--space-3);
  }

  .preview-slide-rail {
    grid-auto-columns: 148px;
  }
}