:root {
  --bg: #f3f5f8;
  --surface: #ffffff;
  --surface-soft: #f8fafc;
  --ink: #102036;
  --ink-soft: #54657d;
  --line: #d9e1ea;
  --line-strong: #c4cfdb;
  --accent: #155eef;
  --accent-soft: #dbe8ff;
  --success: #067647;
  --success-soft: #d1fadf;
  --warn: #b54708;
  --warn-soft: #fef0c7;
  --danger: #b42318;
  --danger-soft: #fee4e2;
  --shadow: 0 12px 28px rgba(16, 32, 54, 0.06);
  --radius: 16px;
  --radius-sm: 10px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: radial-gradient(circle at top left, #edf4ff 0, #f3f5f8 28%, #f3f5f8 100%);
  color: var(--ink);
  font-family: "Avenir Next", "Segoe UI", "PingFang SC", "Hiragino Sans GB", sans-serif;
}

body { min-height: 100vh; }

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

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

button {
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  border-radius: 999px;
  padding: 11px 16px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}

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

button:hover { opacity: 0.94; }

input, textarea, select {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  padding: 12px 14px;
  background: var(--surface);
  color: var(--ink);
}

textarea { resize: vertical; min-height: 90px; }

.muted { color: var(--ink-soft); }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

.create-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 24px;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(217, 225, 234, 0.85);
}

.create-brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.create-brand-mark {
  font-weight: 800;
  letter-spacing: -0.03em;
  font-size: 18px;
}

.create-brand-sub {
  color: var(--ink-soft);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.create-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.create-nav-link {
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 700;
}

.create-nav-link.active {
  background: var(--accent-soft);
  color: var(--accent);
}

.create-nav-link.accent {
  background: #102036;
  color: #fff;
}

.studio-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 700;
}

.studio-pill::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #98a2b3;
}

.studio-pill.ok::before { background: var(--success); }
.studio-pill.error::before { background: var(--danger); }

.create-shell {
  max-width: 1520px;
  margin: 0 auto;
  padding: 28px 24px 40px;
}

.hero-panel {
  display: grid;
  grid-template-columns: 1.45fr 0.9fr;
  gap: 20px;
  padding: 28px;
  background: linear-gradient(135deg, #0f172a 0%, #163f8c 56%, #eef4ff 160%);
  color: #fff;
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.hero-kicker {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero-copy h1 {
  margin: 14px 0 10px;
  font-size: 34px;
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.hero-copy p {
  margin: 0;
  max-width: 56ch;
  color: rgba(255, 255, 255, 0.82);
  font-size: 15px;
  line-height: 1.7;
}

.hero-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  align-self: end;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.hero-stat strong {
  font-size: 22px;
  letter-spacing: -0.03em;
}

.hero-stat-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  opacity: 0.78;
}

.workflow-strip {
  margin: 20px 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.workflow-step {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 16px 18px;
  border-radius: 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.workflow-step.active {
  border-color: #bfd3ff;
  background: linear-gradient(180deg, #ffffff 0%, #f5f9ff 100%);
}

.workflow-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: #eef4ff;
  color: var(--accent);
  font-weight: 800;
}

.workflow-step strong { display: block; margin-bottom: 4px; }
.workflow-step p { margin: 0; color: var(--ink-soft); font-size: 12px; line-height: 1.5; }

.studio-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) 360px;
  gap: 18px;
  align-items: start;
}

.studio-main,
.studio-side {
  display: grid;
  gap: 18px;
}

.studio-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.studio-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 22px;
  border-bottom: 1px solid var(--line);
}

.studio-card-head h2 {
  margin: 6px 0 0;
  font-size: 22px;
  letter-spacing: -0.03em;
}

.studio-card-kicker {
  color: var(--ink-soft);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.studio-card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.studio-card-body {
  padding: 22px;
}

.ai-card-body {
  display: grid;
  gap: 18px;
}

.ai-summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.ai-block {
  display: grid;
  gap: 12px;
  padding: 16px 18px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: var(--surface-soft);
}

.ai-block-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.ai-title-output {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
}

.ai-keyword-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

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

.ai-review-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.ai-asset-card {
  display: grid;
  gap: 10px;
  padding: 12px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid var(--line);
}

.ai-asset-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 14px;
  background: #e9eef6;
}

.ai-asset-meta {
  display: grid;
  gap: 4px;
}

.ai-asset-meta strong {
  font-size: 13px;
}

.ai-asset-note {
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.5;
}

.seed-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.seed-grid label,
.dimension-grid label {
  display: grid;
  gap: 8px;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 700;
}

.seed-grid .span-2 { grid-column: span 2; }

.seed-actions {
  margin-top: 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.image-upload-panel {
  margin-top: 18px;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 16px;
  padding: 16px;
  border-radius: 18px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
}

.image-preview-frame {
  min-height: 180px;
  border-radius: 16px;
  border: 1px dashed var(--line-strong);
  background: linear-gradient(180deg, #ffffff 0%, #eef4ff 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  overflow: hidden;
}

.image-preview-frame img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 10px;
}

.image-upload-copy {
  display: grid;
  align-content: center;
  gap: 8px;
}

.image-upload-copy p {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.6;
}

.decision-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.decision-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  border-radius: 18px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
}

.decision-card strong {
  font-size: 18px;
  letter-spacing: -0.03em;
}

.decision-label {
  color: var(--ink-soft);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.state-ok { color: var(--success); }
.state-warn { color: var(--warn); }

.category-panel {
  margin-top: 18px;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 14px;
  align-items: end;
  padding: 18px;
  border-radius: 18px;
  background: #f7faff;
  border: 1px solid #d7e5ff;
}

.category-panel p {
  margin: 6px 0 0;
  color: var(--ink-soft);
  line-height: 1.6;
}

.category-selectors {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.tags-block {
  margin-top: 18px;
  display: grid;
  gap: 16px;
}

.tags-title {
  margin-bottom: 8px;
  font-size: 12px;
  font-weight: 800;
  color: var(--ink-soft);
}

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

.tag {
  display: inline-flex;
  align-items: center;
  padding: 7px 11px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  background: var(--surface-soft);
  border: 1px solid var(--line);
}

.tag.warn {
  background: var(--warn-soft);
  color: var(--warn);
  border-color: transparent;
}

.tag.ok {
  background: var(--success-soft);
  color: var(--success);
  border-color: transparent;
}

.tag.danger {
  background: var(--danger-soft);
  color: var(--danger);
  border-color: transparent;
}

.tag.neutral {
  color: var(--ink-soft);
}

.notes-list {
  display: grid;
  gap: 8px;
}

.note-item {
  padding: 12px 14px;
  border-radius: 14px;
  background: var(--surface-soft);
  color: var(--ink-soft);
  line-height: 1.6;
}

.field-stack,
.field-group {
  display: grid;
  gap: 14px;
}

.field-group-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.field-group-head h3 {
  margin: 0;
  font-size: 16px;
}

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

.field-card {
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  background: var(--surface-soft);
}

.field-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
}

.field-code {
  display: block;
  margin-top: 4px;
  color: var(--ink-soft);
  font-size: 11px;
}

.field-badge {
  display: inline-flex;
  align-items: center;
  padding: 5px 9px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
}

.field-badge.required {
  background: var(--warn-soft);
  color: var(--warn);
}

.field-badge.optional {
  background: #e9eff6;
  color: var(--ink-soft);
}

.field-card-body {
  padding: 16px;
}

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

.save-result-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-bottom: 12px;
}

.logic-list {
  margin: 0;
  padding-left: 18px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.studio-output {
  margin: 0;
  padding: 16px;
  border-radius: 16px;
  background: #0f172a;
  color: #d7e4ff;
  min-height: 320px;
  overflow: auto;
  font-size: 12px;
  line-height: 1.6;
}

.empty-panel {
  padding: 18px;
  border-radius: 16px;
  background: var(--surface-soft);
  color: var(--ink-soft);
}

@media (max-width: 1180px) {
  .studio-grid,
  .hero-panel,
  .category-panel,
  .decision-grid,
  .ai-summary-grid,
  .ai-keyword-columns,
  .ai-assets-grid,
  .seed-grid,
  .image-upload-panel,
  .workflow-strip,
  .field-grid {
    grid-template-columns: 1fr;
  }

  .seed-grid .span-2 {
    grid-column: span 1;
  }

  .dimension-grid,
  .category-selectors,
  .hero-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .create-topbar,
  .create-shell {
    padding-left: 14px;
    padding-right: 14px;
  }

  .create-topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .dimension-grid,
  .category-selectors,
  .hero-stats {
    grid-template-columns: 1fr;
  }

  .ai-block-head {
    align-items: flex-start;
    flex-direction: column;
  }
}