:root {
  --bg: #0d0b0a;
  --panel: rgba(27, 22, 20, 0.92);
  --panel-soft: rgba(36, 28, 24, 0.9);
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #f7efe8;
  --muted: #b7aba1;
  --accent: #ff9b54;
  --accent-2: #ffcf82;
  --accent-3: #7f6bff;
  --chip: rgba(255, 255, 255, 0.08);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --font-ui: "Segoe UI", "Inter", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at top left, rgba(255, 155, 84, 0.16), transparent 28%),
    radial-gradient(circle at top right, rgba(127, 107, 255, 0.12), transparent 24%),
    linear-gradient(180deg, #18110e 0%, #0d0b0a 100%);
  color: var(--text);
  font-family: var(--font-ui);
}

body { padding: 20px; }

.shell {
  max-width: 1560px;
  margin: 0 auto;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(14, 11, 10, 0.68);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

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

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--accent), #ff6b6b 52%, var(--accent-3));
  color: #120e0b;
  font-weight: 800;
  font-size: 20px;
}

.brand-title {
  font-size: 21px;
  font-weight: 700;
}

.brand-subtitle,
.eyebrow,
.preview-kicker,
.library-card p,
.dropzone p,
.prompt-footer p,
.selection-card p,
.upload-card p,
.tips li {
  color: var(--muted);
}

.brand-subtitle,
.eyebrow,
.preview-kicker {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.topbar-meta,
.selection-meta,
.helper-actions,
.tag-stream,
.card-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.status-pill,
.count-pill,
.tag-pill,
.media-badge,
.ghost-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--chip);
  border: 1px solid var(--line);
  color: var(--text);
  font-size: 12px;
}

.status-pill.muted,
.ghost-chip {
  color: var(--muted);
}

.layout {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr) 300px;
  gap: 18px;
}

.panel {
  min-height: 780px;
  padding: 22px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--panel) 0%, rgba(17, 13, 12, 0.96) 100%);
  box-shadow: var(--shadow);
}

.panel-head,
.strip-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.panel-head h1,
.panel-head h2,
.strip-head h3,
.preview-copy h3,
.tips h3 {
  margin: 0;
}

.panel-head h1,
.panel-head h2 {
  font-size: 28px;
  line-height: 1.05;
}

.workspace-head h2 {
  font-size: 32px;
}

.category-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin: 22px 0 16px;
}

.category-button,
.ghost-button,
.primary-button {
  cursor: pointer;
  border: 1px solid var(--line);
  transition: 0.18s ease;
  font: inherit;
}

.category-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 14px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
}

.category-button.active {
  background: linear-gradient(135deg, rgba(255, 155, 84, 0.18), rgba(127, 107, 255, 0.14));
  border-color: rgba(255, 155, 84, 0.38);
}

.category-button:hover,
.ghost-button:hover,
.primary-button:hover,
.library-card:hover,
.selection-card:hover,
.upload-card:hover,
.dropzone.dragover {
  transform: translateY(-1px);
  border-color: var(--line-strong);
}

.searchbox {
  display: grid;
  gap: 7px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 16px;
}

.searchbox input,
#promptField {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
}

.searchbox input {
  padding: 12px 14px;
}

.library-grid,
.selection-grid,
.upload-list {
  display: grid;
  gap: 12px;
}

.library-card,
.selection-card,
.upload-card {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.015));
}

.library-thumb,
.selection-thumb,
.upload-thumb,
.preview-art {
  position: relative;
  overflow: hidden;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(255, 155, 84, 0.45), rgba(127, 107, 255, 0.5));
}

.library-thumb,
.upload-thumb {
  aspect-ratio: 1 / 1;
}

.selection-thumb {
  aspect-ratio: 1.12 / 1;
}

.preview-stage {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 18px;
  margin: 24px 0 18px;
}

.preview-canvas {
  min-height: 360px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.015));
  padding: 18px;
}

.preview-card {
  height: 100%;
  display: grid;
  gap: 14px;
}

.preview-art {
  flex: 1;
  min-height: 270px;
  display: grid;
  place-items: end start;
  padding: 18px;
}

.preview-art::after,
.library-thumb::after,
.selection-thumb::after,
.upload-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, transparent 0%, rgba(13, 11, 10, 0.14) 45%, rgba(13, 11, 10, 0.72) 100%);
}

.preview-art span,
.thumb-copy {
  position: relative;
  z-index: 1;
}

.thumb-copy {
  display: grid;
  gap: 3px;
  padding: 12px;
}

.thumb-copy strong {
  font-size: 14px;
}

.preview-copy {
  display: grid;
  align-content: start;
  gap: 12px;
  padding: 18px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.015));
}

.preview-copy p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.selection-strip,
.prompt-panel,
.upload-list-wrap,
.tips {
  padding: 18px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.015));
}

.selection-grid {
  margin-top: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.selection-card.active {
  border-color: rgba(255, 155, 84, 0.45);
  box-shadow: 0 0 0 1px rgba(255, 155, 84, 0.16) inset;
}

.selection-card .selection-meta-row,
.upload-card .selection-meta-row,
.library-card .selection-meta-row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
}

.compact {
  align-items: center;
}

#promptField {
  min-height: 170px;
  resize: vertical;
  padding: 16px 18px;
  margin-top: 16px;
  font-size: 16px;
  line-height: 1.6;
}

.prompt-footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-top: 14px;
}

.ghost-button,
.primary-button {
  padding: 11px 16px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.primary-button {
  background: linear-gradient(135deg, var(--accent), #ff7c66 56%, #ffbc74);
  color: #1d130d;
  border-color: transparent;
  font-weight: 700;
}

.dropzone {
  display: grid;
  place-items: center;
  text-align: center;
  gap: 10px;
  min-height: 260px;
  margin: 22px 0 18px;
  padding: 28px;
  border-radius: var(--radius-lg);
  border: 1px dashed rgba(255, 207, 130, 0.35);
  background:
    radial-gradient(circle at top, rgba(255, 155, 84, 0.16), transparent 42%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.015));
  outline: none;
}

.drop-icon {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.06);
  font-size: 30px;
}

.upload-list {
  margin-top: 16px;
}

.tips {
  margin-top: 18px;
}

.tips ol {
  margin: 14px 0 0;
  padding-left: 20px;
  display: grid;
  gap: 9px;
}

.empty-state {
  padding: 18px;
  border: 1px dashed var(--line);
  border-radius: var(--radius-md);
  color: var(--muted);
  text-align: center;
}

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

.mini-button {
  cursor: pointer;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  border-radius: 12px;
  padding: 8px 11px;
  font: inherit;
}

.mini-button:hover {
  border-color: var(--line-strong);
}

@media (max-width: 1280px) {
  .layout {
    grid-template-columns: 280px minmax(0, 1fr);
  }

  .upload-panel {
    grid-column: 1 / -1;
    min-height: auto;
  }
}

@media (max-width: 980px) {
  body {
    padding: 12px;
  }

  .layout,
  .preview-stage,
  .selection-grid,
  .prompt-footer {
    grid-template-columns: 1fr;
  }

  .panel,
  .preview-canvas {
    min-height: auto;
  }

  .topbar,
  .panel-head,
  .strip-head {
    flex-direction: column;
    align-items: stretch;
  }
}