:root {
  --bg: #f4efe7;
  --panel: #fffaf2;
  --line: #d8cdbd;
  --text: #1f1a17;
  --muted: #6e645a;
  --accent: #b04a2f;
  --accent-soft: #f2d5c4;
  --success: #2f7d62;
  --warning: #aa6a1f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Noto Sans SC", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, #fff7ec 0, transparent 28rem),
    linear-gradient(180deg, #efe5d7 0%, var(--bg) 100%);
}

.app-shell {
  max-width: 1440px;
  margin: 0 auto;
  padding: 24px;
}

.hero,
.panel,
.content,
.sidebar {
  border: 1px solid var(--line);
  background: rgba(255, 250, 242, 0.96);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  box-shadow: 0 12px 40px rgba(93, 67, 39, 0.08);
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 28px;
  margin-bottom: 20px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 12px;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.subtle,
.hint {
  color: var(--muted);
}

.identity-card {
  min-width: 220px;
  padding: 16px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--accent-soft), #f8e7dc);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.panel-grid,
.layout,
.tasks-area {
  display: grid;
  gap: 20px;
}

.panel-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-bottom: 20px;
}

.layout {
  grid-template-columns: 340px minmax(0, 1fr);
}

.tasks-area {
  grid-template-columns: 320px minmax(0, 1fr);
}

.panel,
.content,
.sidebar {
  padding: 20px;
}

.stack-form {
  display: grid;
  gap: 12px;
}

input,
textarea,
button {
  font: inherit;
}

input,
textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fffdf9;
}

button {
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  transition: transform 120ms ease, opacity 120ms ease;
}

button:hover {
  transform: translateY(-1px);
  opacity: 0.95;
}

button.ghost {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent-soft);
}

.file-list,
.checkbox-list,
.session-list,
.task-list,
.artifact-gallery {
  display: grid;
  gap: 10px;
}

.file-item,
.session-card,
.task-card,
.artifact-card {
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #fffdf8;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fffdf8;
}

.sidebar-header,
.content-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 16px;
}

.followup-box {
  margin: 20px 0;
  display: grid;
  gap: 12px;
}

.session-card.active,
.task-card.active {
  border-color: var(--accent);
  background: #fff3eb;
}

.status {
  display: inline-flex;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.status.queued {
  background: #f1ead7;
  color: #7b6114;
}

.status.running {
  background: #e6edf9;
  color: #1e5dab;
}

.status.succeeded,
.status.open {
  background: #dff1ea;
  color: var(--success);
}

.status.failed,
.status.closed {
  background: #f8dfda;
  color: #a03723;
}

.report-title {
  margin-bottom: 10px;
  color: var(--muted);
}

.report-content {
  min-height: 360px;
  max-height: 720px;
  overflow: auto;
  padding: 16px;
  border-radius: 16px;
  background: #1d1a18;
  color: #f8f2ea;
  line-height: 1.6;
  white-space: pre-wrap;
}

.artifact-gallery {
  margin-top: 16px;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

.artifact-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 12px;
  background: #ede3d7;
}

.artifact-card a {
  color: var(--accent);
  text-decoration: none;
}

.empty {
  color: var(--muted);
  font-style: italic;
}

@media (max-width: 1024px) {
  .panel-grid,
  .layout,
  .tasks-area,
  .hero {
    grid-template-columns: 1fr;
  }

  .hero {
    flex-direction: column;
  }
}