:root {
  --ink: #0f0e0d;
  --paper: #f5f2ee;
  --warm: #e8e2da;
  --rule: #d4cdc4;
  --accent: #c94a2e;
  --accent-2: #2e5fc9;
  --muted: #8a8278;
  --surface: #ffffff;
  --running: #e4a227;
  --done: #3a9e6a;
  --failed: #c94a2e;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: 'DM Sans', sans-serif;
  font-weight: 300;
  line-height: 1.6;
  min-height: 100vh;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}

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

.page {
  position: relative;
  z-index: 1;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 32px 0 28px;
  border-bottom: 1.5px solid var(--ink);
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.brand-mark {
  font-family: 'DM Serif Display', serif;
  font-size: 22px;
  letter-spacing: -0.5px;
  color: var(--ink);
}

.brand-mark span {
  color: var(--accent);
  font-style: italic;
}

.brand-sub {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  padding: 2px 6px;
  border: 1px solid var(--rule);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.status-dot {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
  font-family: 'IBM Plex Mono', monospace;
}

.status-dot::before {
  content: '';
  display: block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--done);
  animation: pulse 2s infinite;
}

.status-dot.is-idle::before {
  background: var(--muted);
  animation: none;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.help-btn {
  font-size: 12px;
  color: var(--muted);
  background: none;
  border: 1px solid var(--rule);
  padding: 4px 10px;
  cursor: pointer;
  font-family: 'DM Sans', sans-serif;
  transition: all .2s;
}

.help-btn:hover {
  border-color: var(--ink);
  color: var(--ink);
}

.tabs-wrap {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.tab-btn {
  position: relative;
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  font-weight: 500;
  padding: 24px 22px 22px;
  background:
    radial-gradient(circle at top left, rgba(201, 74, 46, 0.08), transparent 42%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(246, 241, 235, 0.96));
  border: 1.5px solid var(--rule);
  cursor: pointer;
  color: var(--muted);
  letter-spacing: 0.02em;
  transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease, background .22s ease;
  text-align: left;
  overflow: hidden;
}

.tab-btn::after {
  content: '';
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 4px;
  background: var(--rule);
  opacity: 0.9;
}

.tab-btn.active {
  color: var(--ink);
  border-color: var(--ink);
  box-shadow: 0 18px 36px rgba(15, 14, 13, 0.08), inset 0 0 0 1px rgba(15, 14, 13, 0.08);
  transform: translateY(-4px);
  background:
    radial-gradient(circle at top left, rgba(201, 74, 46, 0.12), transparent 44%),
    linear-gradient(180deg, #ffffff, #f7f2ec);
}

.tab-btn:hover:not(.active) {
  color: var(--ink);
  border-color: var(--ink);
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(15, 14, 13, 0.06);
}

.tab-index {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  min-height: 24px;
  padding: 0 8px;
  border: 1px solid var(--rule);
  background: rgba(255, 255, 255, 0.7);
}

.entry-card {
  min-height: 246px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 20px;
}

.entry-card:nth-child(1)::after,
.entry-card:nth-child(2)::after,
.entry-card:nth-child(3)::after {
  content: '';
  position: absolute;
  right: -30px;
  bottom: -36px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  opacity: 0.28;
  pointer-events: none;
}

.entry-card:nth-child(1)::after {
  background: radial-gradient(circle, rgba(201, 74, 46, 0.16), transparent 66%);
}

.entry-card:nth-child(2)::after {
  background: radial-gradient(circle, rgba(228, 162, 39, 0.16), transparent 66%);
}

.entry-card:nth-child(3)::after {
  background: radial-gradient(circle, rgba(46, 95, 201, 0.16), transparent 66%);
}

.entry-card:nth-child(1)::before {
  background: linear-gradient(90deg, var(--accent), #dd6c4b);
}

.entry-card:nth-child(2)::before {
  background: linear-gradient(90deg, #a46b1d, #e4a227);
}

.entry-card:nth-child(3)::before {
  background: linear-gradient(90deg, var(--accent-2), #5d84da);
}

.entry-card-head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.entry-card-title {
  font-family: 'DM Serif Display', serif;
  font-size: 28px;
  color: var(--ink);
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.entry-card-copy {
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 28ch;
}

.entry-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-self: flex-start;
}

.tab-btn.active .tab-index {
  border-color: rgba(15, 14, 13, 0.16);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.88);
}

.tab-btn.active .entry-card-title {
  color: var(--ink);
}

.tab-btn.active .entry-card-copy {
  color: #665f56;
}

.panel {
  display: none;
  animation: fadeIn .3s ease;
}

.panel.active {
  display: block;
  margin-top: 26px;
}

.hidden {
  display: none !important;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.mode-card {
  margin-top: 32px;
  padding: 24px 28px;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--ink);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

.free-mode-card {
  border-left-color: var(--accent-2);
}

.mode-card-text h2 {
  font-family: 'DM Serif Display', serif;
  font-size: 20px;
  letter-spacing: -0.3px;
}

.mode-card-text p {
  margin-top: 6px;
  font-size: 13.5px;
  color: var(--muted);
  max-width: 400px;
}

.tags {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  border: 1px solid var(--rule);
  color: var(--muted);
  background: var(--warm);
}

.tag.accent {
  border-color: var(--accent);
  color: var(--accent);
  background: #fdf4f2;
}

.tag.blue {
  border-color: var(--accent-2);
  color: var(--accent-2);
  background: #f2f6ff;
}

.input-section {
  margin-top: 28px;
}

.section-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-label::before {
  content: '';
  display: block;
  width: 20px;
  height: 1px;
  background: var(--muted);
}

.input-hint {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 10px;
  line-height: 1.5;
}

textarea {
  width: 100%;
  min-height: 110px;
  padding: 14px 16px;
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--surface);
  border: 1.5px solid var(--rule);
  resize: vertical;
  outline: none;
  transition: border-color .2s;
}

textarea:focus {
  border-color: var(--ink);
}

textarea::placeholder {
  color: var(--muted);
  font-style: italic;
}

.chat-input-shell {
  position: relative;
}

.chat-input-shell textarea {
  padding-bottom: 58px;
}

.chat-input-tools {
  position: absolute;
  right: 12px;
  bottom: 12px;
  display: flex;
  gap: 8px;
  align-items: center;
}

.input-footer {
  margin-top: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.rules-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 18px;
}

.field {
  display: grid;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
}

.field.full {
  grid-column: 1 / -1;
}

.field span {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.field input,
.field select {
  width: 100%;
  min-height: 42px;
  padding: 10px 12px;
  border: 1.5px solid var(--rule);
  background: var(--surface);
  color: var(--ink);
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  outline: none;
}

.field input:focus,
.field select:focus {
  border-color: var(--ink);
}

.check-group {
  gap: 16px;
}

.check-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}

.input-hints-list {
  list-style: none;
  font-size: 12px;
  color: var(--muted);
}

.input-hints-list li {
  padding: 2px 0;
}

.input-hints-list li::before {
  content: '— ';
}

.btn-group {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.btn {
  font-family: 'DM Sans', sans-serif;
  font-size: 13.5px;
  font-weight: 500;
  padding: 10px 22px;
  cursor: pointer;
  border: none;
  transition: all .2s;
  letter-spacing: 0.01em;
}

a.btn {
  display: inline-block;
  text-decoration: none;
}

.btn[disabled] {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--ink);
  color: var(--paper);
}

.btn-primary:hover:not([disabled]) {
  background: #2a2825;
}

.btn-secondary {
  background: none;
  border: 1.5px solid var(--rule);
  color: var(--ink);
}

.btn-secondary:hover {
  border-color: var(--ink);
}

.btn-ghost {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 13px;
  padding: 8px 12px;
  cursor: pointer;
  font-family: 'DM Sans', sans-serif;
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-ghost:hover {
  color: var(--ink);
}

.chat-tool-btn {
  padding: 6px 10px;
  border: 1px solid rgba(212, 205, 196, 0.95);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(6px);
}

.chat-tool-btn:hover {
  border-color: var(--ink);
  background: #fff;
}

.btn-icon {
  font-size: 14px;
}

.progress-section {
  margin-top: 32px;
  padding: 24px 28px;
  border: 1px solid var(--rule);
  background: var(--surface);
}

.progress-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.progress-title {
  font-family: 'DM Serif Display', serif;
  font-size: 17px;
}

.badge {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.08em;
  padding: 3px 9px;
  text-transform: uppercase;
}

.badge-running {
  background: #fdf4e3;
  color: var(--running);
  border: 1px solid #f0d09a;
}

.badge-idle {
  background: var(--warm);
  color: var(--muted);
  border: 1px solid var(--rule);
}

.badge-done {
  background: #edf7f1;
  color: var(--done);
  border: 1px solid #a8dfc0;
}

.badge-failed {
  background: #fdf2f0;
  color: var(--failed);
  border: 1px solid #f0b8b0;
}

.steps-inner {
  display: flex;
  align-items: flex-start;
  width: 100%;
}

.step-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 0 0 auto;
}

.step-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid var(--rule);
  background: var(--paper);
  position: relative;
  z-index: 1;
  transition: all .3s;
}

.step-dot.done {
  background: var(--ink);
  border-color: var(--ink);
}

.step-dot.active {
  background: var(--accent);
  border-color: var(--accent);
  animation: stepPulse 1.4s infinite;
}

.step-dot.failed {
  background: var(--failed);
  border-color: var(--failed);
  animation: none;
}

@keyframes stepPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(201, 74, 46, .4); }
  50% { box-shadow: 0 0 0 5px rgba(201, 74, 46, 0); }
}

.connector {
  flex: 1;
  height: 1.5px;
  background: var(--rule);
  margin-top: 5px;
  transition: background .3s;
}

.connector.done {
  background: var(--ink);
}

.step-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9.5px;
  text-align: center;
  color: var(--muted);
  margin-top: 6px;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.step-desc {
  margin-top: 16px;
  font-size: 13px;
  color: var(--muted);
  padding: 10px 14px;
  background: var(--warm);
  border-left: 2px solid var(--accent);
  font-style: italic;
}

.step-desc.error {
  border-left-color: var(--failed);
  color: var(--failed);
}

.source-preview {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.source-card {
  padding: 7px 12px;
  border: 1px solid var(--rule);
  font-size: 12px;
  color: var(--muted);
  background: var(--warm);
  font-family: 'IBM Plex Mono', monospace;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.source-card::before {
  content: '↗';
  font-size: 10px;
}

.source-card:hover {
  border-color: var(--ink);
  color: var(--ink);
}

.bottom-grid {
  margin-top: 32px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 20px;
  align-items: stretch;
}

.bottom-grid-wide {
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
}

.info-box {
  padding: 22px 24px;
  border: 1px solid var(--rule);
  background: var(--surface);
  min-width: 0;
}

.info-box-title {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--rule);
}

.report-list,
.default-list {
  list-style: none;
}

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

.report-item {
  padding: 8px 0;
  border-bottom: 1px solid var(--warm);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  font-size: 13px;
  transition: color .15s;
}

.report-item span:first-child {
  flex: 1 1 auto;
  min-width: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.report-item:hover {
  color: var(--accent);
}

.report-list li:last-child .report-item {
  border-bottom: none;
}

.rule-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px solid var(--warm);
}

.rule-main {
  min-width: 0;
}

.rule-title {
  font-size: 14px;
  color: var(--ink);
}

.rule-meta {
  margin-top: 4px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--muted);
  overflow-wrap: anywhere;
}

.rule-actions {
  flex: 0 0 auto;
}

.btn-small {
  padding: 8px 14px;
  font-size: 12px;
}

.report-item-date {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  color: var(--muted);
  flex: 0 0 auto;
  text-align: right;
}

.default-item {
  font-size: 13px;
  color: var(--muted);
  padding: 5px 0;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.default-item::before {
  content: '·';
  color: var(--accent);
  font-size: 18px;
  line-height: 1;
}

.history-section {
  margin-top: 32px;
  border: 1px solid var(--rule);
  background: var(--surface);
}

.history-header {
  padding: 14px 22px;
  border-bottom: 1px solid var(--rule);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.history-row {
  padding: 13px 22px;
  border-bottom: 1px solid var(--warm);
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  transition: background .15s;
}

.history-row:hover {
  background: var(--warm);
}

.history-section > .history-row:last-child {
  border-bottom: none;
}

.history-id {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--muted);
  min-width: 34px;
}

.history-title {
  flex: 1;
}

.badge-sm {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9.5px;
  letter-spacing: 0.07em;
  padding: 2px 7px;
  text-transform: uppercase;
  border: 1px solid transparent;
}

.badge-sm.running {
  background: #fdf4e3;
  color: var(--running);
  border-color: #f0d09a;
}

.badge-sm.done {
  background: #edf7f1;
  color: var(--done);
  border-color: #a8dfc0;
}

.badge-sm.failed {
  background: #fdf2f0;
  color: var(--failed);
  border-color: #f0b8b0;
}

.badge-sm.pending {
  background: var(--warm);
  color: var(--muted);
  border-color: var(--rule);
}

.history-time {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--muted);
}

.history-empty,
.empty-copy {
  font-size: 13px;
  color: var(--muted);
  padding: 8px 0;
}

.notice-box {
  margin-top: 14px;
  padding: 10px 14px;
  border-left: 2px solid var(--accent);
  background: #fdf4f2;
  color: var(--accent);
  font-size: 13px;
}

.intake-box {
  margin-top: 14px;
}

.intake-card {
  padding: 16px 18px;
  border: 1px solid var(--rule);
  background: var(--surface);
}

.intake-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 8px;
}

.intake-copy {
  font-size: 14px;
  color: var(--ink);
  line-height: 1.7;
}

.intake-meta {
  margin-top: 10px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--muted);
}

.clarify-grid {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.clarify-item {
  display: grid;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
}

.clarify-item input {
  width: 100%;
  min-height: 40px;
  padding: 10px 12px;
  border: 1.5px solid var(--rule);
  background: var(--surface);
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  color: var(--ink);
  outline: none;
}

.clarify-item input:focus {
  border-color: var(--ink);
}

footer {
  margin-top: 64px;
  padding: 24px 0;
  border-top: 1.5px solid var(--ink);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-brand {
  font-family: 'DM Serif Display', serif;
  font-size: 14px;
  color: var(--muted);
}

.footer-copy {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--muted);
}

@media (max-width: 600px) {
  .bottom-grid {
    grid-template-columns: 1fr;
  }

  .rules-form-grid {
    grid-template-columns: 1fr;
  }

  .mode-card {
    flex-direction: column;
  }

  header {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }

  .steps-inner {
    overflow-x: auto;
    padding-bottom: 8px;
  }

  .input-footer,
  footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .history-row {
    flex-wrap: wrap;
  }

  .tabs-wrap {
    grid-template-columns: 1fr;
  }

  .entry-card {
    min-height: auto;
  }

  .entry-card-copy {
    max-width: none;
  }

  .chat-input-shell textarea {
    padding-bottom: 72px;
  }

  .chat-input-tools {
    left: 12px;
    right: 12px;
    justify-content: flex-end;
    flex-wrap: wrap;
  }
}