:root {
  --bg: #f5eee3;
  --panel: rgba(255, 250, 241, 0.94);
  --panel-strong: #fff8ef;
  --ink: #1e1d19;
  --muted: #695f52;
  --line: rgba(74, 58, 37, 0.14);
  --accent: #d45c34;
  --accent-strong: #a63c1d;
  --teal: #1e6f6b;
  --success: #28644d;
  --error: #b5442e;
  --shadow: 0 14px 34px rgba(95, 63, 28, 0.12);
  --radius: 20px;
  --radius-sm: 14px;
  --mono: "Cascadia Code", "Cascadia Mono", Consolas, monospace;
  --body: "Trebuchet MS", "Segoe UI", sans-serif;
  --display: "Georgia", "Palatino Linotype", serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--body);
  background:
    radial-gradient(circle at top left, rgba(212, 92, 52, 0.2), transparent 32%),
    radial-gradient(circle at top right, rgba(30, 111, 107, 0.16), transparent 26%),
    linear-gradient(180deg, var(--bg) 0%, #f2e4cf 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.18) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(circle at center, black, transparent 78%);
}

.page-shell {
  width: calc(100vw - 12px);
  max-width: none;
  margin: 6px auto 10px;
  display: grid;
  gap: 12px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.hero {
  display: grid;
  grid-template-columns: 1.7fr 0.85fr;
  gap: 16px;
  padding: 16px 18px;
}

.eyebrow {
  margin: 0 0 6px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.7rem;
  color: var(--accent-strong);
  font-weight: 700;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--display);
  font-weight: 700;
}

h1 {
  font-size: clamp(1.9rem, 3vw, 3rem);
  line-height: 0.96;
  margin-bottom: 8px;
}

h2 {
  font-size: 1.24rem;
}

h3 {
  font-size: 0.98rem;
}

.hero-copy,
.panel-copy,
.detail-copy,
.example-card p,
.trace-item p,
.builtin-item p {
  margin: 0;
  color: var(--muted);
  line-height: 1.38;
  font-size: 0.9rem;
}

.hero-card {
  padding: 14px;
  border-radius: 16px;
  background:
    linear-gradient(140deg, rgba(30, 111, 107, 0.14), rgba(212, 164, 66, 0.18)),
    var(--panel-strong);
  border: 1px solid rgba(30, 111, 107, 0.12);
}

.mini-list {
  margin: 10px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
  font-size: 0.92rem;
}

.syntax-samples {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.syntax-samples code,
.mono {
  font-family: var(--mono);
}

.syntax-samples code {
  display: block;
  padding: 8px 10px;
  border-radius: 10px;
  background: rgba(20, 34, 46, 0.93);
  color: #f7e9c9;
  font-size: 0.82rem;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.tag {
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(212, 92, 52, 0.1);
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 700;
}

.library-panel,
.editor-panel,
.control-panel,
.state-panel,
.output-panel,
.ast-panel,
.source-panel,
.bytecode-panel {
  padding: 14px;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 10px;
  margin-bottom: 10px;
}

.panel-header.compact {
  margin-bottom: 10px;
}

.workspace-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.85fr) minmax(320px, 0.72fr);
  gap: 12px;
  align-items: start;
}

.dashboard-grid {
  display: grid;
  grid-template-columns:
    minmax(250px, 0.9fr)
    minmax(460px, 1.45fr)
    minmax(260px, 0.9fr)
    minmax(320px, 1fr);
  gap: 12px;
  align-items: start;
}

.source-panel {
  grid-column: 1;
}

.bytecode-panel {
  grid-column: 2;
}

.state-panel {
  grid-column: 3;
}

.output-panel {
  grid-column: 4;
}

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

.example-library {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(200px, 1fr);
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 2px;
  scrollbar-width: thin;
}

.example-card {
  display: grid;
  gap: 8px;
  padding: 12px;
  border-radius: 14px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(255, 244, 229, 0.95)),
    var(--panel-strong);
  border: 1px solid rgba(30, 111, 107, 0.14);
}

.example-card.active {
  outline: 3px solid rgba(212, 92, 52, 0.18);
  border-color: rgba(212, 92, 52, 0.36);
}

.example-card h3 {
  font-size: 1rem;
}

.example-footer {
  display: flex;
}

textarea {
  width: 100%;
  min-height: 340px;
  height: min(48vh, 620px);
  resize: vertical;
  border: 1px solid rgba(20, 34, 46, 0.12);
  border-radius: 14px;
  padding: 14px;
  font: 0.92rem/1.42 var(--mono);
  color: #f7edd9;
  background:
    linear-gradient(180deg, rgba(14, 27, 37, 0.96), rgba(18, 40, 56, 0.96));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

textarea:focus,
button:focus,
input:focus {
  outline: 3px solid rgba(30, 111, 107, 0.2);
  outline-offset: 2px;
}

.check-row,
.slider-row {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.88rem;
}

.button-row {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
}

button {
  appearance: none;
  border: none;
  border-radius: 999px;
  padding: 8px 12px;
  font: 700 0.84rem var(--body);
  color: var(--ink);
  background: rgba(30, 111, 107, 0.12);
  cursor: pointer;
  transition: transform 120ms ease, background 120ms ease;
}

button:hover {
  transform: translateY(-1px);
  background: rgba(30, 111, 107, 0.18);
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

button.primary {
  background: var(--accent);
  color: #fff7f1;
}

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

.slider-row {
  margin-top: 10px;
  justify-content: space-between;
}

.slider-row input {
  flex: 1;
}

.status-box,
.error-box,
.detail-block,
.stat-card,
.placeholder-card,
.stack-entry,
.variable-row,
.output-console,
.trace-item,
.builtin-item {
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255, 252, 246, 0.92);
}

.status-box,
.error-box,
.detail-block {
  margin-top: 10px;
  padding: 12px;
}

.error-box {
  color: var(--error);
  background: rgba(181, 68, 46, 0.08);
  border-color: rgba(181, 68, 46, 0.2);
}

.hidden {
  display: none;
}

.stat-grid {
  margin-top: 10px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.stat-card {
  padding: 10px;
  display: grid;
  gap: 3px;
}

.stat-label {
  color: var(--muted);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.detail-title {
  margin: 6px 0 4px;
  font-size: 0.92rem;
  color: #123347;
}

.builtin-list,
.variables-view,
.trace-list,
.source-map,
.stack-view {
  display: grid;
  gap: 8px;
}

.builtin-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.builtin-item,
.variable-row,
.placeholder-card,
.stack-entry,
.trace-item {
  padding: 10px 12px;
}

.builtin-item {
  display: grid;
  gap: 2px;
}

.result-badge {
  align-self: center;
  padding: 7px 10px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.78rem;
  white-space: nowrap;
}

.result-badge.neutral {
  background: rgba(105, 95, 82, 0.12);
  color: var(--muted);
}

.result-badge.success {
  background: rgba(40, 100, 77, 0.14);
  color: var(--success);
}

.result-badge.error {
  background: rgba(181, 68, 46, 0.14);
  color: var(--error);
}

.source-map,
.table-wrap,
.variablesView,
.variables-view,
.stack-view,
.trace-list,
.ast-view {
  max-height: 360px;
  overflow: auto;
}

.source-line {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid transparent;
  background: rgba(255, 255, 255, 0.58);
}

.source-line.active {
  border-color: rgba(212, 92, 52, 0.38);
  background: rgba(255, 236, 225, 0.8);
}

.line-no {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.8rem;
}

.source-line code {
  font-family: var(--mono);
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.84rem;
}

.table-wrap {
  overflow: auto;
}

.bytecode-table {
  width: 100%;
  border-collapse: collapse;
}

.bytecode-table th,
.bytecode-table td {
  text-align: left;
  padding: 8px;
  border-bottom: 1px solid rgba(74, 58, 37, 0.12);
  vertical-align: top;
  font-size: 0.84rem;
}

.bytecode-table tr.active {
  background: rgba(30, 111, 107, 0.12);
}

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

.state-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.stack-label,
.slot-tag,
.console-header,
.trace-head span {
  color: var(--muted);
  font-size: 0.75rem;
}

.variable-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.slot-tag {
  display: inline-block;
  margin-left: 8px;
}

.output-panel {
  display: grid;
  gap: 10px;
  align-content: start;
}

.output-console {
  overflow: hidden;
}

.output-console pre {
  max-height: 140px;
  overflow: auto;
}

.console-header {
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.output-console pre,
.ast-view {
  margin: 0;
  padding: 12px;
  min-height: 100px;
  white-space: pre-wrap;
  word-break: break-word;
  font: 0.84rem/1.42 var(--mono);
  color: #123347;
}

.trace-head {
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.trace-code,
.trace-delta {
  margin: 6px 0 0;
  color: #123347;
}

@media (max-width: 1180px) {
  .hero,
  .workspace-grid,
  .dashboard-grid,
  .state-grid {
    grid-template-columns: 1fr;
  }

  .source-panel,
  .bytecode-panel,
  .state-panel,
  .output-panel,
  .ast-panel {
    grid-column: auto;
  }

  .source-map,
  .table-wrap,
  .variables-view,
  .stack-view,
  .trace-list,
  .ast-view,
  .output-console pre {
    max-height: none;
  }

  .button-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .builtin-list {
    grid-template-columns: 1fr;
  }

  .stat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100vw - 16px, 100%);
    margin-top: 8px;
    margin-bottom: 14px;
  }

  .hero,
  .library-panel,
  .editor-panel,
  .control-panel,
  .state-panel,
  .output-panel,
  .ast-panel,
  .source-panel,
  .bytecode-panel {
    padding: 12px;
  }

  .panel-header,
  .slider-row,
  .check-row {
    flex-direction: column;
    align-items: stretch;
  }

  .button-row,
  .stat-grid,
  .state-grid,
  .syntax-samples {
    grid-template-columns: 1fr;
  }

  .variable-row {
    flex-direction: column;
    align-items: start;
  }
}