:root {
  --bg: #f4efe6;
  --bg-deep: #ebe1d2;
  --surface: rgba(255, 251, 246, 0.9);
  --surface-strong: rgba(255, 255, 255, 0.96);
  --ink: #14222c;
  --ink-soft: #66747d;
  --line: rgba(20, 34, 44, 0.11);
  --line-strong: rgba(20, 34, 44, 0.18);
  --accent: #0a7a72;
  --accent-deep: #085c56;
  --accent-soft: rgba(10, 122, 114, 0.1);
  --warm: #cb7446;
  --warm-soft: rgba(203, 116, 70, 0.13);
  --shadow: 0 24px 70px rgba(41, 46, 52, 0.12);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "IBM Plex Sans SC", "Avenir Next", "Segoe UI Variable", "PingFang SC", sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, var(--bg) 0%, #fbf7f1 48%, var(--bg-deep) 100%);
}

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

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

.hidden {
  display: none !important;
}

.canvas {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.canvas-grid {
  background-image:
    linear-gradient(rgba(20, 34, 44, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 34, 44, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.7), transparent 85%);
}

.canvas-glow-a,
.canvas-glow-b {
  border-radius: 999px;
  filter: blur(20px);
  opacity: 0.55;
}

.canvas-glow-a {
  inset: auto auto -120px -80px;
  width: 320px;
  height: 320px;
  background: rgba(203, 116, 70, 0.18);
}

.canvas-glow-b {
  inset: -100px -60px auto auto;
  width: 360px;
  height: 360px;
  background: rgba(10, 122, 114, 0.16);
}

.site-header,
.workspace-shell,
.settings-page-shell {
  position: relative;
  z-index: 1;
}

.site-header {
  max-width: 1320px;
  margin: 0 auto;
  padding: 26px 24px 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand-box {
  width: 50px;
  height: 50px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--accent), #22938c);
  color: #fff;
  font-size: 1.18rem;
  font-weight: 700;
  box-shadow: 0 14px 28px rgba(10, 122, 114, 0.24);
}

.brand-copy {
  display: grid;
  gap: 2px;
}

.brand-copy strong {
  font-size: 1.05rem;
}

.brand-copy small {
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.nav-link {
  padding: 11px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(20, 34, 44, 0.08);
  color: var(--ink-soft);
}

.nav-link-strong {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.9);
}

.nav-button {
  appearance: none;
}

.nav-user {
  display: inline-flex;
  align-items: center;
  padding: 11px 14px;
  border-radius: 999px;
  background: rgba(20, 34, 44, 0.92);
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.92rem;
}

.workspace-shell,
.settings-page-shell {
  max-width: 1320px;
  margin: 0 auto;
  padding: 12px 24px 56px;
}

.workspace-shell {
  display: grid;
  gap: 22px;
}

.workspace-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 22px;
  align-items: start;
}

.settings-page-shell {
  display: grid;
  gap: 22px;
}

.auth-shell {
  position: relative;
  z-index: 1;
  max-width: 980px;
  margin: 0 auto;
  padding: 20px 24px 56px;
}

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

.panel {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.62), rgba(255, 255, 255, 0.25)),
    var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.studio-panel,
.side-panel,
.result-panel,
.trace-panel,
.settings-header-panel,
.settings-card {
  padding: 24px;
}

.side-panel {
  position: sticky;
  top: 22px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 16px;
  margin-bottom: 18px;
}

.compact-head {
  margin-bottom: 14px;
}

.section-kicker {
  display: inline-flex;
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(20, 34, 44, 0.08);
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-size: 11px;
}

.studio-panel h1,
.settings-header-main h1 {
  margin: 12px 0 0;
  font-family: "Iowan Old Style", "Palatino Linotype", "Noto Serif SC", serif;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1;
  letter-spacing: -0.04em;
}

.result-panel h2,
.trace-panel h2,
.settings-card h2 {
  margin: 12px 0 0;
  font-size: 1.28rem;
  letter-spacing: -0.03em;
}

.field {
  display: grid;
  gap: 8px;
}

.field span {
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface-strong);
  color: var(--ink);
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.field input,
.field select {
  min-height: 52px;
  padding: 0 16px;
}

.field textarea {
  min-height: 420px;
  padding: 18px 18px 20px;
  resize: vertical;
  line-height: 1.82;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: rgba(10, 122, 114, 0.42);
  box-shadow: 0 0 0 4px rgba(10, 122, 114, 0.08);
}

.action-row,
.toolbar,
.settings-header-main {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.settings-header-main {
  justify-content: space-between;
}

.primary-button,
.ghost-button,
.secondary-link {
  border: none;
  border-radius: 999px;
  padding: 13px 18px;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease, opacity 160ms ease;
}

.primary-button {
  background: linear-gradient(135deg, var(--accent), #24918a);
  color: #fff;
  box-shadow: 0 14px 28px rgba(10, 122, 114, 0.22);
}

.primary-button.compact {
  padding-inline: 16px;
}

.compact-button {
  padding-inline: 16px;
}

.ghost-button,
.secondary-link {
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid var(--line);
  color: var(--ink);
}

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

.primary-button:disabled,
.ghost-button:disabled {
  opacity: 0.46;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.primary-block {
  width: 100%;
  justify-content: center;
}

.status-badge {
  padding: 10px 13px;
  border-radius: 999px;
  background: rgba(20, 34, 44, 0.07);
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.status-badge.running {
  background: var(--accent-soft);
  color: var(--accent-deep);
}

.status-badge.done {
  background: rgba(44, 145, 94, 0.12);
  color: #196b44;
}

.status-badge.error {
  background: rgba(186, 63, 46, 0.12);
  color: #8c2e21;
}

.message-strip {
  display: none;
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  line-height: 1.7;
}

.message-strip.visible {
  display: block;
}

.message-strip.success {
  background: rgba(44, 145, 94, 0.08);
  border-color: rgba(44, 145, 94, 0.16);
  color: #196b44;
}

.message-strip.error {
  background: rgba(186, 63, 46, 0.08);
  border-color: rgba(186, 63, 46, 0.16);
  color: #8c2e21;
}

.side-stack {
  display: grid;
  gap: 20px;
}

.side-block {
  display: grid;
  gap: 12px;
}

.side-notes {
  display: grid;
  gap: 10px;
}

.account-card {
  padding: 16px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid var(--line);
}

.account-card strong {
  display: block;
  margin-bottom: 6px;
  font-size: 0.96rem;
}

.account-card span {
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.note-card {
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: rgba(18, 29, 36, 0.92);
  color: rgba(244, 248, 247, 0.92);
}

.note-card strong {
  display: block;
  margin-bottom: 4px;
  font-size: 0.95rem;
}

.note-card span {
  color: rgba(244, 248, 247, 0.7);
  font-size: 0.9rem;
}

.results-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.92fr);
  gap: 22px;
}

.output-box {
  margin: 0;
  min-height: 420px;
  padding: 20px;
  border-radius: 24px;
  background: rgba(15, 23, 28, 0.96);
  color: #eef4f2;
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.85;
  overflow: auto;
}

.output-box.empty,
.empty-state {
  color: var(--ink-soft);
  background: rgba(255, 255, 255, 0.72);
}

.reference-list,
.trace-list,
.settings-fields {
  display: grid;
  gap: 14px;
}

.reference-card,
.trace-card {
  padding: 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--line);
}

.reference-card header,
.trace-card header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 12px;
}

.reference-card h3,
.trace-card h3 {
  margin: 0;
  font-size: 1rem;
  line-height: 1.55;
}

.reference-card p,
.trace-card p {
  margin: 8px 0 0;
  color: var(--ink-soft);
  line-height: 1.7;
}

.reference-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.reference-meta span,
.attempt-pill {
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(20, 34, 44, 0.06);
  font-size: 0.86rem;
  color: var(--ink-soft);
}

.reference-check {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

.trace-card details {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.trace-card summary {
  cursor: pointer;
  color: var(--accent-deep);
}

.attempt-list {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.attempt-item {
  padding: 14px;
  border-radius: 14px;
  background: rgba(10, 122, 114, 0.05);
  border: 1px solid rgba(10, 122, 114, 0.11);
}

.attempt-item.retry {
  background: rgba(203, 116, 70, 0.07);
  border-color: rgba(203, 116, 70, 0.13);
}

.attempt-item h4 {
  margin: 0 0 8px;
  font-size: 0.95rem;
}

.attempt-item p {
  margin: 6px 0 0;
}

.ref-marker {
  display: inline-flex;
  margin: 0 1px;
  padding: 0 7px;
  border-radius: 999px;
  background: rgba(10, 122, 114, 0.24);
  color: #90f0e8;
}

.numeric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.toggle-line {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink-soft);
  font-size: 0.94rem;
}

.toggle-line input {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

.advanced-card {
  grid-column: span 2;
}

.advanced-panel summary {
  cursor: pointer;
  list-style: none;
  font-weight: 600;
}

.advanced-panel summary::-webkit-details-marker {
  display: none;
}

.advanced-panel summary::after {
  content: "+";
  float: right;
  color: var(--ink-soft);
}

.advanced-panel[open] summary::after {
  content: "-";
}

.top-gap {
  margin-top: 16px;
}

.auth-panel {
  padding: 24px;
}

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

.auth-card {
  display: grid;
  gap: 14px;
  padding: 18px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--line);
}

.auth-card h1 {
  margin: 0;
  font-size: 1.9rem;
  letter-spacing: -0.03em;
}

.auth-copy {
  margin: -2px 0 2px;
  color: var(--ink-soft);
  line-height: 1.65;
}

.inline-field {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
}

.code-input {
  letter-spacing: 0.16em;
}

@media (max-width: 1120px) {
  .workspace-grid,
  .results-grid,
  .settings-grid,
  .numeric-grid,
  .auth-grid {
    grid-template-columns: 1fr;
  }

  .side-panel {
    position: static;
  }

  .advanced-card {
    grid-column: auto;
  }
}

@media (max-width: 720px) {
  .site-header,
  .workspace-shell,
  .settings-page-shell {
    padding-inline: 16px;
  }

  .studio-panel,
  .side-panel,
  .result-panel,
  .trace-panel,
  .settings-header-panel,
  .settings-card {
    padding: 18px;
  }

  .studio-panel h1,
  .settings-header-main h1 {
    font-size: 2.1rem;
  }

  .field textarea {
    min-height: 280px;
  }

  .inline-field {
    grid-template-columns: 1fr;
  }
}