:root {
  --bg: #f5efe2;
  --paper: rgba(255, 250, 240, 0.82);
  --panel: rgba(255, 252, 247, 0.92);
  --ink: #20160d;
  --muted: #695647;
  --line: rgba(62, 39, 20, 0.12);
  --accent: #b6471f;
  --accent-strong: #8f2e11;
  --accent-soft: rgba(182, 71, 31, 0.12);
  --shadow: 0 24px 80px rgba(47, 28, 15, 0.14);
  --mono: 'IBM Plex Mono', monospace;
  --sans: 'Space Grotesk', sans-serif;
  --control-bg: rgba(255, 255, 255, 0.76);
  --control-ink: var(--ink);
  --editor-bg: rgba(255, 255, 255, 0.76);
  --editor-ink: var(--ink);
  --editor-line: var(--line);
  --toast-bg: rgba(26, 19, 13, 0.94);
  --toast-ink: #fff6ed;
}

[data-theme='dark'] {
  --bg: #15110d;
  --paper: rgba(27, 22, 17, 0.86);
  --panel: rgba(32, 26, 20, 0.92);
  --ink: #f6eee4;
  --muted: #c4b4a5;
  --line: rgba(255, 239, 219, 0.12);
  --accent: #de6b39;
  --accent-strong: #f18d5f;
  --accent-soft: rgba(222, 107, 57, 0.18);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  --control-bg: #271a12;
  --control-ink: #f7ead9;
  --editor-bg: #090706;
  --editor-ink: #f8eddc;
  --editor-line: rgba(255, 232, 207, 0.18);
  --toast-bg: rgba(248, 234, 217, 0.96);
  --toast-ink: #23170e;
}

* {
  box-sizing: border-box;
}

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

body {
  position: relative;
  overflow-x: hidden;
  background:
    radial-gradient(circle at top left, rgba(255, 212, 164, 0.6), transparent 28rem),
    linear-gradient(180deg, #f8f2e8 0%, #efe2cf 100%);
  color: var(--ink);
  font-family: var(--sans);
  transition: background-color 180ms ease, color 180ms ease;
}

[data-theme='dark'] body {
  background:
    radial-gradient(circle at top left, rgba(191, 92, 42, 0.26), transparent 30rem),
    linear-gradient(180deg, #16110e 0%, #0e0c0a 100%);
}

code,
textarea,
pre,
input {
  font-family: var(--mono);
}

.backdrop {
  position: fixed;
  inset: auto;
  pointer-events: none;
  filter: blur(24px);
  opacity: 0.85;
}

.backdrop-a {
  top: -4rem;
  right: -4rem;
  width: 22rem;
  height: 22rem;
  border-radius: 999px;
  background: rgba(235, 130, 55, 0.25);
}

.backdrop-b {
  bottom: -7rem;
  left: -5rem;
  width: 26rem;
  height: 26rem;
  border-radius: 999px;
  background: rgba(85, 125, 173, 0.18);
}

.page {
  position: relative;
  z-index: 1;
  max-width: 1280px;
  margin: 0 auto;
  padding: 3rem 1.25rem 4rem;
}

.hero {
  display: grid;
  gap: 1rem;
  margin-bottom: 2rem;
  padding: 2rem;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--paper);
  box-shadow: var(--shadow);
  animation: rise 540ms ease-out both;
}

.hero-topbar,
.brand-lockup,
.footer,
.footer-brand,
.footer-links {
  display: flex;
  align-items: center;
}

.hero-topbar,
.footer {
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand-lockup,
.footer-brand {
  gap: 0.8rem;
}

.brand-logo {
  width: 88px;
  height: auto;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.35);
}

.footer-logo {
  width: 46px;
  height: auto;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.25);
}

.eyebrow {
  margin: 0;
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.brand-caption {
  margin: 0.25rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.hero h1 {
  margin: 0;
  max-width: 11ch;
  font-size: clamp(2.4rem, 6vw, 5.2rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
}

.lede {
  margin: 0;
  max-width: 70ch;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

.hero-actions,
.editor-actions,
.scenario-list,
.theme-switcher,
.quick-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.quick-actions {
  margin-top: -0.25rem;
}

.theme-switcher {
  padding: 0.3rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--paper) 82%, transparent);
}

.theme-button {
  appearance: none;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  padding: 0.6rem 0.9rem;
  transition: background-color 140ms ease, color 140ms ease, transform 140ms ease;
}

.theme-button[aria-pressed='true'] {
  background: var(--accent);
  color: #fff7f0;
}

.workspace {
  display: grid;
  grid-template-columns: 0.95fr 1.15fr 1.15fr;
  gap: 1rem;
}

.panel {
  display: grid;
  gap: 1rem;
  min-height: 0;
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--panel);
  box-shadow: var(--shadow);
  animation: rise 620ms ease-out both;
}

.panel:nth-child(2) {
  animation-delay: 80ms;
}

.panel:nth-child(3) {
  animation-delay: 160ms;
}

.panel-header {
  display: grid;
  gap: 0.25rem;
}

.panel-header h2 {
  margin: 0;
  font-size: 1.05rem;
}

.panel-header p,
.hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

.scenario-button,
.button {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  font: inherit;
  transition:
    transform 140ms ease,
    background-color 140ms ease,
    border-color 140ms ease,
    color 140ms ease;
}

.scenario-button {
  padding: 0.7rem 0.95rem;
  background: var(--control-bg);
  border-color: var(--line);
  color: var(--control-ink);
}

.scenario-button.active,
.scenario-button:hover {
  background: var(--accent-soft);
  border-color: rgba(182, 71, 31, 0.35);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.1rem;
  text-decoration: none;
}

.button:hover,
.scenario-button:hover {
  transform: translateY(-1px);
}

.button.primary {
  background: var(--accent);
  color: #fff7f0;
}

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

.button.ghost {
  border-color: var(--line);
  background: var(--control-bg);
  color: var(--control-ink);
}

.option-group {
  display: grid;
  gap: 0.55rem;
}

.option-group label {
  font-size: 0.9rem;
  font-weight: 700;
}

input,
textarea,
pre {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--editor-bg);
  color: var(--editor-ink);
}

input {
  padding: 0.9rem 1rem;
  font-size: 0.9rem;
  background: var(--control-bg);
  color: var(--control-ink);
}

textarea,
pre {
  min-height: 26rem;
  margin: 0;
  padding: 1rem;
  font-size: var(--field-font-size, 0.88rem);
  line-height: 1.6;
  overflow: auto;
  border-color: var(--editor-line);
}

textarea::selection,
pre::selection,
input::selection {
  background: color-mix(in srgb, var(--accent) 30%, transparent);
}

.field-toolbar,
.font-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.55rem;
  flex-wrap: wrap;
}

.rules-panel {
  border: 1px solid var(--editor-line);
  border-radius: 18px;
  background: color-mix(in srgb, var(--panel) 82%, transparent);
  overflow: hidden;
}

.rules-panel summary {
  cursor: pointer;
  list-style: none;
  padding: 0.95rem 1rem;
  font-weight: 700;
}

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

.rules-panel[open] summary {
  border-bottom: 1px solid var(--editor-line);
}

.rules-content {
  display: grid;
  gap: 0.65rem;
  padding: 0.95rem 1rem 1rem;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

.rules-content p {
  margin: 0;
}

.toolbar-label {
  color: var(--muted);
  font-size: 0.84rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.toolbar-button {
  appearance: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--control-bg);
  color: var(--control-ink);
  cursor: pointer;
  font: inherit;
  padding: 0.55rem 0.85rem;
  transition:
    background-color 140ms ease,
    border-color 140ms ease,
    color 140ms ease,
    transform 140ms ease;
}

.toolbar-button:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
}

.signal-row {
  display: grid;
  gap: 0.75rem;
}

.signal-card {
  display: grid;
  gap: 0.35rem;
  padding: 0.95rem 1rem;
  border: 1px solid var(--editor-line);
  border-radius: 18px;
  background: color-mix(in srgb, var(--panel) 78%, transparent);
}

.signal-label {
  color: var(--muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.error {
  margin: 0;
  color: #9a2318;
  font-size: 0.92rem;
}

.footer {
  margin-top: 1rem;
  padding: 1rem 0.4rem 0;
  color: var(--muted);
}

.footer p {
  margin: 0;
}

.footer-links {
  gap: 1rem;
  flex-wrap: wrap;
}

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

.footer a:hover {
  color: var(--accent-strong);
}

.toast {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 20;
  max-width: 22rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--editor-line);
  border-radius: 14px;
  background: var(--toast-bg);
  color: var(--toast-ink);
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.visible {
  opacity: 1;
  transform: translateY(0);
}

[data-theme='dark'] .theme-switcher,
[data-theme='dark'] .toolbar-button,
[data-theme='dark'] .scenario-button,
[data-theme='dark'] .button.ghost,
[data-theme='dark'] input {
  box-shadow: inset 0 0 0 1px rgba(255, 235, 214, 0.04);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1040px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  textarea,
  pre {
    min-height: 20rem;
  }
}