/* ============================================================
   App shell — .app-shell + workspace + sidebar + creator + library + settings
   ============================================================ */

.app-shell {
  width: var(--gac-canvas);
  margin: 18px auto 0;
  display: grid;
  grid-template-columns: minmax(220px, 240px) minmax(0, 1fr);
  align-items: start;
  gap: 28px;
  padding: 0 32px 96px;
  color: var(--gac-text);
}

/* Sidebar */
.sidebar {
  position: sticky;
  top: 88px;
  z-index: 8;
  align-self: start;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
  min-width: 0;
  min-height: calc(100vh - 116px);
  padding: 10px;
  border: 1px solid var(--gac-glass-border);
  border-radius: 12px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.08), transparent 28%),
    radial-gradient(circle at 8% 0%, color-mix(in srgb, var(--gac-lime) 13%, transparent), transparent 38%),
    radial-gradient(circle at 88% 0%, color-mix(in srgb, var(--gac-lime) 10%, transparent), transparent 34%),
    var(--gac-glass-strong);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.05),
    0 18px 54px var(--gac-glass-shadow);
  backdrop-filter: blur(20px) saturate(145%);
}

.sidebar-status {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  min-width: 0;
  padding: 8px 12px;
  border: 1px solid color-mix(in srgb, var(--gac-lime) 18%, var(--gac-glass-border));
  border-radius: 8px;
  background: var(--gac-field-bg);
}

.sidebar-status-secondary {
  min-width: 0;
}

.sidebar-status-icon {
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  flex: 0 0 30px;
  border-radius: 8px;
  color: var(--gac-lime);
  background: color-mix(in srgb, var(--gac-lime) 13%, transparent);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--gac-lime) 25%, transparent);
}

.sidebar-status-icon svg,
.sidebar a svg,
.sidebar-signout svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.sidebar-status-copy {
  display: grid;
  gap: 1px;
  min-width: 0;
}

.sidebar-status-copy span,
.sidebar-status-copy small {
  color: var(--gac-subtle);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.25;
  white-space: nowrap;
}

.sidebar-status-copy strong {
  color: var(--gac-lime);
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.05;
}

.sidebar nav {
  flex: 1 1 auto;
  min-width: 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 6px;
  padding: 3px;
  border: 1px solid var(--gac-line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--gac-field-bg) 72%, transparent);
}

.sidebar a {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 8px;
  color: var(--gac-muted);
  font-size: 13.5px;
  font-weight: 600;
  white-space: nowrap;
  transition: background 200ms ease, color 200ms ease, box-shadow 200ms ease;
}

.sidebar a:hover {
  color: var(--gac-text);
  background: var(--gac-surface-2);
}

.sidebar a.active,
.sidebar a[aria-current="page"] {
  color: var(--gac-text);
  background: color-mix(in srgb, var(--gac-lime) 18%, transparent);
  box-shadow:
    inset 0 0 0 1px color-mix(in srgb, var(--gac-lime) 32%, transparent);
}

.sidebar form {
  flex: 0 0 auto;
  width: 100%;
  margin: 0;
}

.text-button {
  min-height: 38px;
  border: 1px solid var(--gac-glass-border);
  border-radius: 8px;
  background: transparent;
  color: var(--gac-muted);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}

.text-button:hover {
  color: var(--gac-text);
  border-color: color-mix(in srgb, var(--gac-lime) 38%, var(--gac-glass-border));
}

.sidebar-signout {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  width: 100%;
  padding: 0 12px;
  white-space: nowrap;
}

/* Workspace */
.workspace {
  min-width: 0;
  display: grid;
  gap: 28px;
}

.workspace-header,
.page-heading,
.page-heading-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin: 0;
}

.workspace-header h2,
.page-heading h1 {
  margin: 0;
  color: var(--gac-text);
  font-family: var(--font-body);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0;
}

.workspace-header span {
  color: var(--gac-muted);
  font-size: 13px;
}

.section-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  color: var(--gac-text);
  font-size: 17px;
  font-weight: 700;
}

.section-title.compact { font-size: 14px; }

/* Creator grid */
.creator-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 24px;
}

.creator-grid.has-result {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
}

.creator-panel,
.result-panel {
  padding: 24px;
  border: 1px solid var(--gac-glass-border);
  border-radius: 8px;
  background: var(--gac-glass-bg);
  display: grid;
  gap: 16px;
  align-content: start;
}

.field-label {
  display: block;
  margin-bottom: 6px;
  color: var(--gac-text);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.form-row,
.creator-panel input,
.creator-panel select,
.creator-panel textarea {
  width: 100%;
}

.creator-panel input[type="text"],
.creator-panel input[type="search"],
.creator-panel input[type="number"],
.creator-panel select,
.creator-panel textarea {
  height: 42px;
  padding: 0 14px;
  border: 1px solid var(--gac-glass-border);
  border-radius: 9px;
  background: var(--gac-field-bg);
  color: var(--gac-text);
  font-family: var(--font-body);
  font-size: 14px;
  transition: border-color 200ms ease, box-shadow 280ms ease;
}

.creator-panel textarea { height: auto; min-height: 84px; padding: 10px 14px; resize: vertical; }

.creator-panel input:focus,
.creator-panel select:focus,
.creator-panel textarea:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--gac-lime) 70%, transparent);
  box-shadow:
    0 0 0 4px color-mix(in srgb, var(--gac-lime) 16%, transparent),
    0 12px 28px color-mix(in srgb, var(--gac-lime) 14%, transparent);
}

/* File dropzone */
.file-field {
  display: grid;
  gap: 10px;
}

.file-dropzone {
  position: relative;
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border: 1px dashed color-mix(in srgb, var(--gac-glass-border) 60%, var(--gac-line-strong));
  border-radius: 12px;
  background: var(--gac-surface-2);
  cursor: pointer;
  transition: border-color 200ms ease, background 200ms ease;
}

.file-dropzone:hover,
.file-dropzone:focus-within,
.file-field.has-file .file-dropzone,
.file-field[data-drag-over] .file-dropzone,
.file-dropzone[data-drag-over] {
  border-color: color-mix(in srgb, var(--gac-lime) 56%, transparent);
  background: color-mix(in srgb, var(--gac-lime) 6%, var(--gac-surface-2));
}

.file-dropzone:focus-within {
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--gac-lime) 16%, transparent);
}

.file-field[data-drag-over] .file-dropzone,
.file-dropzone[data-drag-over] {
  border-style: solid;
  border-color: color-mix(in srgb, var(--gac-lime) 78%, transparent);
  background: color-mix(in srgb, var(--gac-lime) 12%, var(--gac-surface-2));
  box-shadow:
    0 0 0 4px color-mix(in srgb, var(--gac-lime) 18%, transparent),
    0 16px 36px color-mix(in srgb, var(--gac-lime) 14%, transparent);
}

@media (prefers-reduced-motion: reduce) {
  .file-dropzone { transition: none; }
}

.file-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.file-icon {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--gac-surface);
  color: var(--gac-lime);
}

.file-copy {
  display: grid;
  gap: 2px;
  color: var(--gac-muted);
  font-size: 13px;
  line-height: 1.4;
}

/* Output / status */
.output-includes {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.output-includes span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid color-mix(in srgb, var(--gac-lime) 32%, var(--gac-glass-border));
  border-radius: 8px;
  background: color-mix(in srgb, var(--gac-lime) 10%, transparent);
  color: color-mix(in srgb, var(--gac-lime) 78%, var(--gac-text));
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.job-status {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--gac-surface-2);
  border: 1px solid var(--gac-glass-border);
  font-size: 13px;
}

.job-status.completed { color: var(--gac-success-text); border-color: var(--gac-success-line); background: var(--gac-success-bg); }
.job-status.failed { color: var(--gac-danger-text); background: var(--gac-danger-bg); border-color: color-mix(in srgb, var(--gac-danger-text) 30%, transparent); }

.notice {
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--gac-glass-border);
  background: var(--gac-surface-2);
  color: var(--gac-muted);
  font-size: 13px;
  line-height: 1.45;
}

.notice.success { background: var(--gac-success-bg); border-color: var(--gac-success-line); color: var(--gac-success-text); }
.notice.warning-list { background: color-mix(in srgb, var(--gac-accent-warm) 12%, transparent); border-color: color-mix(in srgb, var(--gac-accent-warm) 38%, transparent); color: var(--gac-text); }

/* Preview / GIF / stage */
.preview-product-art,
.preview-stage,
.preview-screen,
.preview-gif {
  width: 100%;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--gac-glass-border);
  border-radius: 14px;
  background: var(--gac-surface-2);
  overflow: hidden;
}

.preview-gif img,
.preview-stage img,
.preview-screen img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.preview-timeline {
  display: flex;
  gap: 6px;
  margin-top: 10px;
  color: var(--gac-subtle);
  font-family: var(--font-mono);
  font-size: 11px;
}

.frame-preview {
  display: grid;
  gap: 10px;
}

.frame-preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
  gap: 6px;
}

.frame-preview-grid img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--gac-line-strong);
}

/* Download row */
.download-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.download-row a,
.asset-actions a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 9px;
  border: 1px solid var(--gac-glass-border);
  background: var(--gac-surface-2);
  color: var(--gac-text);
  font-size: 12px;
  font-weight: 700;
  transition: border-color 200ms ease, color 200ms ease, background 200ms ease, transform 180ms ease-out;
}

.download-row a:hover,
.asset-actions a:hover {
  border-color: color-mix(in srgb, var(--gac-lime) 56%, var(--gac-glass-border));
  background: color-mix(in srgb, var(--gac-lime) 8%, var(--gac-surface-2));
  color: var(--gac-lime);
  transform: translateY(-1px);
}

@media (prefers-reduced-motion: reduce) {
  .download-row a,
  .asset-actions a { transition: border-color 200ms ease, color 200ms ease, background 200ms ease; }
  .download-row a:hover,
  .asset-actions a:hover { transform: none; }
}

/* Library */
.library-page,
.library-toolbar,
.library-summary {
  display: grid;
}

.library-toolbar {
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 14px 18px;
  border: 1px solid var(--gac-glass-border);
  border-radius: 12px;
  background: var(--gac-glass-bg);
}

.library-toolbar input {
  height: 40px;
  padding: 0 14px;
  border: 1px solid var(--gac-glass-border);
  border-radius: 9px;
  background: var(--gac-field-bg);
  color: var(--gac-text);
  font-size: 14px;
}

.library-toolbar input:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--gac-lime) 60%, transparent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--gac-lime) 14%, transparent);
}

.library-summary {
  color: var(--gac-muted);
  font-size: 13px;
}

.asset-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.asset-grid.wide {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.asset-card {
  display: grid;
  gap: 12px;
  padding: 16px;
  border: 1px solid var(--gac-glass-border);
  border-radius: 14px;
  background: var(--gac-glass-bg);
  transition: transform 280ms cubic-bezier(0.2, 0.7, 0.3, 1), border-color 220ms ease, box-shadow 280ms ease;
}

.asset-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--gac-lime) 46%, var(--gac-glass-border));
  box-shadow:
    0 22px 50px color-mix(in srgb, var(--gac-lime) 14%, var(--gac-glass-shadow)),
    0 0 0 1px color-mix(in srgb, var(--gac-lime) 22%, transparent);
}

@media (prefers-reduced-motion: reduce) {
  .asset-card { transition: border-color 220ms ease, box-shadow 280ms ease; }
  .asset-card:hover { transform: none; }
}

.asset-card img,
.asset-placeholder {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 10px;
  background: var(--gac-surface-2);
  object-fit: cover;
}

.asset-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* Library empty state */
.library-empty {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 36px;
  align-items: center;
  padding: 36px;
  border: 1px solid var(--gac-glass-border);
  border-radius: 8px;
  background: var(--gac-glass-bg);
  box-shadow: var(--gac-card-shadow);
}

.library-empty-copy {
  display: grid;
  gap: 14px;
  align-content: start;
}

.library-empty-copy h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 600;
  color: var(--gac-text);
  letter-spacing: 0;
  line-height: 1.15;
}

.library-empty-copy p {
  margin: 0;
  color: var(--gac-muted);
  font-size: 14.5px;
  line-height: 1.6;
  max-width: 44ch;
}

.library-empty-copy .button,
.library-empty-copy a.button {
  justify-self: start;
  margin-top: 6px;
}

.library-empty-visual {
  display: grid;
  gap: 12px;
  padding: 18px;
  border-radius: 8px;
  border: 1px solid color-mix(in srgb, var(--gac-lime) 24%, var(--gac-glass-border));
  background:
    radial-gradient(120% 80% at 50% 0%, color-mix(in srgb, var(--gac-lime) 10%, transparent), transparent 60%),
    var(--gac-surface-2);
  box-shadow: 0 18px 40px color-mix(in srgb, var(--gac-lime) 8%, var(--gac-glass-shadow));
}

.library-empty-screen {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 12px;
  background: var(--gac-stage);
  border: 1px solid var(--gac-glass-border);
  overflow: hidden;
}

.library-empty-visual .preview-timeline {
  margin: 0;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  gap: 6px;
}

.library-empty-visual .preview-timeline span {
  height: 6px;
  border-radius: 4px;
  background: color-mix(in srgb, var(--gac-lime) 22%, var(--gac-line));
}

.library-empty-visual .preview-timeline span:nth-child(-n + 3) {
  background: color-mix(in srgb, var(--gac-lime) 70%, transparent);
}

/* Settings */
.settings-list {
  display: grid;
  gap: 18px;
}

.settings-list article {
  padding: 24px;
  border: 1px solid color-mix(in srgb, var(--gac-lime) 14%, var(--gac-glass-border));
  border-radius: 14px;
  background: var(--gac-glass-bg);
  box-shadow: 0 10px 24px color-mix(in srgb, var(--gac-lime) 4%, var(--gac-glass-shadow));
  display: grid;
  gap: 12px;
  transition: border-color 220ms ease, box-shadow 280ms ease;
}

.settings-list article:hover {
  border-color: color-mix(in srgb, var(--gac-lime) 26%, var(--gac-glass-border));
  box-shadow: 0 14px 30px color-mix(in srgb, var(--gac-lime) 8%, var(--gac-glass-shadow));
}

@media (prefers-reduced-motion: reduce) {
  .settings-list article { transition: none; }
}

.settings-list h2 {
  margin: 0;
  color: var(--gac-text);
  font-size: 18px;
  font-weight: 700;
}

.settings-list p {
  margin: 0;
  color: var(--gac-muted);
  font-size: 13.5px;
  line-height: 1.5;
}

.settings-list code {
  display: inline-block;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--gac-surface-2);
  font-family: var(--font-mono);
  font-size: 12px;
}

.credit-inline,
.credit-muted,
.credit-note {
  color: var(--gac-muted);
  font-size: 13px;
}

.credit-inline strong { color: var(--gac-text); }

/* Misc states */
.empty-state,
.loading-state {
  display: grid;
  place-items: center;
  padding: 48px;
  border: 1px dashed var(--gac-glass-border);
  border-radius: 14px;
  color: var(--gac-muted);
  font-size: 14px;
}

.recent { color: var(--gac-subtle); font-size: 12px; }
.muted { color: var(--gac-muted); }