/* Upload and detail pages share the established paper and sea-green surfaces. */
.upload-workspace { max-width: 1060px; margin: 0 auto; }
.submission-steps { display: flex; justify-content: center; gap: 0; padding: 0; margin: 7px 0 36px; list-style: none; }
.submission-steps li { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--color-text-secondary); }
.submission-steps li:not(:last-child)::after { content: ''; width: clamp(35px, 7vw, 100px); height: 1px; margin: 0 18px 0 8px; background: var(--color-border); }
.submission-steps li > span { display: inline-flex; align-items: center; justify-content: center; width: 27px; height: 27px; border: 1px solid var(--color-border); border-radius: 50%; font-size: 12px; font-variant-numeric: tabular-nums; }
.submission-steps li.active { color: var(--color-text); font-weight: 600; }
.submission-steps li.active > span { border-color: var(--color-accent); background: var(--color-accent); color: var(--hub-on-accent); }
.submission-steps li.done > span { background: var(--color-accent-bg); color: var(--color-accent); border-color: transparent; }
.upload-surface { max-width: 800px; margin: 0 auto; }
.upload-surface h2 { margin: 0; font-size: 27px; line-height: 1.45; font-weight: 600; letter-spacing: -.02em; }
.upload-intro { color: var(--color-text-secondary); font-size: 14px; line-height: 1.9; margin: 10px 0 28px; }
.upload-mode-toggle { display: flex; align-items: center; gap: 25px; margin: 0 0 18px; padding: 0; border-bottom: 1px solid var(--color-border); background: none; border-radius: 0; }
.upload-mode-btn { display: inline-flex; gap: 8px; align-items: center; min-height: 47px; padding: 9px 1px; background: none; color: var(--color-text-secondary); border: 0; border-bottom: 2px solid transparent; border-radius: 0; box-shadow: none; font: inherit; font-size: 13px; cursor: pointer; }
.upload-mode-btn .hub-icon { width: 16px; height: 16px; }
.upload-mode-btn.active { color: var(--color-text); border-bottom-color: var(--color-accent); background: none; box-shadow: none; }
.upload-surface .upload-drop-zone { padding: 45px 25px 39px; border: 1px dashed var(--color-border); border-radius: 14px; background: var(--color-surface); text-align: center; cursor: default; transition: border-color 160ms ease, background-color 160ms ease; }
.upload-surface .upload-drop-zone.drag-over { border-color: var(--color-accent); background: var(--color-accent-bg); }
.upload-drop-mark { display: inline-flex; justify-content: center; align-items: center; width: 46px; height: 46px; color: var(--color-accent); margin-bottom: 17px; }
.upload-drop-mark .hub-icon { width: 35px; height: 35px; stroke-width: 1.3; }
.upload-drop-zone h3 { font-size: 19px; font-weight: 600; margin: 0 0 10px; }
.upload-drop-zone p { color: var(--color-text-secondary); font-size: 13px; line-height: 1.9; margin: 0; }
.upload-pick-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 25px; }
.upload-pick-actions .btn { position: relative; min-height: 43px; padding: 10px 17px; font-size: 13px; }
.upload-native-input { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
.upload-pick-actions label:focus-within { outline: 2px solid var(--color-accent); outline-offset: 3px; }
.upload-format-notes { margin-top: 17px; color: var(--color-text-secondary); font-size: 12px; line-height: 1.9; }
.upload-format-notes summary { min-height: 34px; cursor: pointer; }
.upload-format-notes p { margin: 8px 0; max-width: 65ch; }
.upload-url-zone { padding: 29px; border: 1px solid var(--color-border); border-radius: 14px; background: var(--color-surface); }
.upload-url-zone > label { display: block; margin-bottom: 10px; font-size: 13px; font-weight: 600; color: var(--color-text); }
.upload-url-row { display: flex; gap: 12px; }
.upload-url-row input { flex: 1; min-width: 0; min-height: 45px; padding: 10px 13px; background: var(--color-surface); color: var(--color-text); font: inherit; font-size: 14px; border: 1px solid var(--color-border); border-radius: 8px; }
.upload-url-row > button { flex-shrink: 0; }
.upload-url-zone p { color: var(--color-text-secondary); font-size: 12px; margin: 13px 0 0; }
.upload-source-row { display: flex; align-items: center; gap: 14px; padding: 17px 0; margin-top: 12px; border-bottom: 1px solid var(--color-border); font-size: 13px; }
.upload-source-row > .hub-icon { color: var(--color-accent); width: 21px; height: 21px; flex-shrink: 0; }
.upload-source-row > div { flex: 1; min-width: 0; }
.upload-source-row strong { display: block; font-size: 13px; font-weight: 600; overflow-wrap: anywhere; }
.upload-source-row span { display: block; color: var(--color-text-secondary); font-size: 12px; margin-top: 3px; overflow-wrap: anywhere; }
.upload-source-row button { flex-shrink: 0; }
.upload-page-actions { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 12px; margin-top: 25px; }
.upload-page-actions > button:first-child:not(:last-child) { margin-right: auto; }
.upload-page-actions > div { display: flex; gap: 10px; flex-wrap: wrap; }
.upload-page-actions .btn { display: inline-flex; justify-content: center; align-items: center; gap: 9px; min-height: 43px; padding: 10px 18px; font-size: 13px; }
.upload-details { max-width: 680px; }
.upload-details .upload-source-row { margin-bottom: 27px; }
.upload-preview-heading { display: flex; align-items: baseline; flex-wrap: wrap; gap: 12px 20px; justify-content: space-between; margin-bottom: 24px; }
.upload-preview-heading > span { font-size: 12px; color: var(--color-text-secondary); }
.upload-confirm { max-width: none; }
.upload-preview-layout { display: grid; grid-template-columns: minmax(0, 1fr) 265px; gap: 30px; }
.upload-preview-stage { min-width: 0; border: 1px solid var(--color-border); border-radius: 14px; overflow: hidden; background: var(--color-surface); }
.upload-preview-label { display: flex; justify-content: space-between; gap: 10px; padding: 15px 18px; font-size: 12px; border-bottom: 1px solid var(--color-border); }
.upload-preview-label a { color: var(--color-accent); display: inline-flex; align-items: center; gap: 5px; }
.upload-preview-label .hub-icon { width: 13px; height: 13px; }
.upload-frame { display: block; width: 100%; height: 470px; border: 0; background: var(--color-surface); }
.upload-preview-copy { padding: 14px 0; min-width: 0; }
.upload-preview-copy h3 { font-size: 23px; font-weight: 600; line-height: 1.6; margin: 0 0 8px; overflow-wrap: anywhere; }
.upload-preview-author { color: var(--color-text-secondary); font-size: 13px; margin: 0 0 25px; }
.submission-meta { display: flex; gap: 9px 17px; flex-wrap: wrap; color: var(--color-text-secondary); font-size: 12px; }
.upload-preview-description { font-size: 14px; line-height: 1.9; margin: 17px 0; overflow-wrap: anywhere; }
.submission-tags { display: flex; flex-wrap: wrap; gap: 7px; }
.submission-tags > span { display: inline-block; max-width: 100%; padding: 3px 8px; border-radius: 5px; color: var(--color-text-secondary); background: var(--color-surface-alt); font-size: 11px; overflow-wrap: anywhere; }
.upload-source-caption { color: var(--color-text-secondary); font-size: 12px; margin: 25px 0 0; padding-top: 15px; border-top: 1px solid var(--color-border); overflow-wrap: anywhere; }
.upload-confirm .upload-page-actions { padding-top: 23px; border-top: 1px solid var(--color-border); }
.upload-multi-note { text-align: right; font-size: 12px; color: var(--color-text-secondary); margin-top: 9px; }
.upload-outcome { padding: 40px 0 70px; text-align: center; }
.upload-outcome-mark { display: inline-flex; align-items: center; justify-content: center; width: 64px; height: 64px; color: var(--color-accent); background: var(--color-surface-alt); border-radius: 16px; margin-bottom: 26px; }
.upload-outcome-mark .hub-icon { width: 31px; height: 31px; }
.upload-outcome > p { margin: 15px 0 0; font-size: 14px; overflow-wrap: anywhere; }
.upload-outcome .upload-intro { margin-top: 8px; }
.upload-outcome-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin-top: 26px; }
.upload-surface :is(button, input, summary):focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; }
.upload-workspace .upload-surface { animation: submission-reveal 280ms cubic-bezier(.16, 1, .3, 1); }
@keyframes submission-reveal { from { clip-path: inset(0 0 10% 0); transform: translateY(6px); } to { clip-path: inset(0); transform: none; } }

.modal-overlay[data-surface='project-detail'] .modal { max-width: 950px; }
.modal-overlay[data-surface='project-detail'] .modal-body { padding: 30px; }
.detail-loading { padding: 50px 15px; text-align: center; color: var(--color-text-secondary); font-size: 14px; }
.detail-introduction { display: grid; gap: 30px; align-items: start; }
.detail-introduction.has-cover { grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); }
.detail-cover { border-radius: 12px; overflow: hidden; background: var(--color-surface-alt); }
.detail-cover img { display: block; width: 100%; aspect-ratio: 1.2; object-fit: cover; }
.detail-copy { min-width: 0; }
.detail-copy h2 { font-size: 28px; font-weight: 600; line-height: 1.5; letter-spacing: -.02em; margin: 11px 0 13px; overflow-wrap: anywhere; }
.detail-author { display: flex; align-items: center; gap: 7px 17px; flex-wrap: wrap; font-size: 12px; color: var(--color-text-secondary); }
.detail-author > button { padding: 3px 0; background: none; border: 0; color: var(--color-accent); font: inherit; text-align: left; cursor: pointer; }
.detail-description { font-size: 14px; line-height: 1.95; white-space: pre-wrap; overflow-wrap: anywhere; margin: 21px 0 18px; max-width: 70ch; }
.detail-origin { font-size: 12px; color: var(--color-text-secondary); margin-top: 17px; }
.detail-primary-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; padding: 26px 0; }
.detail-primary-actions .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 42px; font-size: 13px; padding: 9px 16px; }
.detail-primary-actions .hub-icon { width: 15px; height: 15px; }
.detail-primary-actions .remix-badge { color: var(--color-text-secondary); background: none; font-size: 12px; }
.detail-knowledge { padding: 20px 0; border-top: 1px solid var(--color-border); }
.detail-knowledge h3 { font-size: 14px; font-weight: 600; margin-bottom: 11px; }
.detail-knowledge > div { display: flex; flex-wrap: wrap; gap: 7px; }
.detail-knowledge button { border: 0; background: var(--color-surface-alt); color: var(--color-accent); border-radius: 5px; padding: 7px 10px; font: inherit; font-size: 12px; cursor: pointer; }
.detail-source-discussion { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; padding: 23px 0 0; border-top: 1px solid var(--color-border); font-size: 13px; }
.detail-source-discussion a { color: var(--color-accent); display: inline-flex; align-items: center; gap: 7px; }
.detail-source-discussion .hub-icon { width: 14px; height: 14px; }
.detail-discussion { border-top: 1px solid var(--color-border); padding-top: 24px; }
.detail-discussion-heading { display: flex; align-items: center; justify-content: space-between; gap: 15px; flex-wrap: wrap; }
.detail-discussion-heading h3 { font-size: 17px; font-weight: 600; }
.detail-discussion-heading h3 > span { margin-left: 9px; color: var(--color-text-secondary); font-size: 12px; font-weight: 400; font-variant-numeric: tabular-nums; }
.detail-social { display: flex; gap: 8px; }
.detail-social .btn { font-size: 12px; min-height: 36px; padding: 7px 9px; }
.detail-review { display: flex; gap: 12px; padding: 19px 0; border-bottom: 1px solid var(--color-border-light); }
.detail-review-avatar { display: inline-flex; justify-content: center; align-items: center; width: 32px; height: 32px; border-radius: 50%; background: var(--color-surface-alt); color: var(--color-accent); font-size: 13px; flex-shrink: 0; }
.detail-review > div { flex: 1; min-width: 0; }
.detail-review-byline { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; font-size: 12px; }
.detail-review-byline strong { font-weight: 600; }
.detail-review-byline time { color: var(--color-text-secondary); }
.detail-review p { margin: 6px 0 0; font-size: 13px; line-height: 1.9; white-space: pre-wrap; overflow-wrap: anywhere; }
.detail-empty-reviews { padding: 22px 0; font-size: 13px; color: var(--color-text-secondary); }
.detail-empty-reviews button, .detail-refresh-note button { padding: 3px 8px; font: inherit; color: var(--color-accent); background: none; border: 0; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
.detail-refresh-note { font-size: 12px; color: var(--color-text-secondary); margin-top: 15px; }
.detail-comment-form { padding-top: 23px; }
.detail-comment-form label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 10px; }
.detail-comment-form textarea { display: block; width: 100%; min-height: 85px; padding: 12px 14px; font: inherit; font-size: 14px; line-height: 1.8; resize: vertical; color: var(--color-text); background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 9px; }
.detail-comment-form > div { display: flex; align-items: center; flex-wrap: wrap; justify-content: space-between; gap: 12px; margin-top: 13px; }
.detail-comment-form .btn { min-height: 41px; }
.project-detail :is(button, textarea, a):focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; }
.modal-overlay[data-surface='upload-report'] .modal { max-width: 780px; }
.modal-overlay[data-surface='upload-report'] .lf-banner { background: var(--color-surface-alt); color: var(--color-text); font-size: 14px; line-height: 1.8; border: 0; padding: 16px; border-radius: 9px; }
.modal-overlay[data-surface='upload-report'] .lf-section-title { color: var(--color-text); font-size: 14px; margin: 24px 0 10px; }
.modal-overlay[data-surface='upload-report'] .lf-table { display: block; overflow-x: auto; font-size: 12px; background: var(--color-surface); color: var(--color-text); }
.modal-overlay[data-surface='upload-report'] .lf-table th { background: var(--color-surface-alt); color: var(--color-text); }
.modal-overlay[data-surface='upload-report'] :is(.lf-suggestions, .lf-tip) { background: none; color: var(--color-text-secondary); font-size: 13px; line-height: 1.9; border: 0; }

@media (max-width: 800px) {
  .upload-preview-layout { grid-template-columns: minmax(0, 1fr); gap: 23px; }
  .upload-preview-copy { padding: 0; }
  .upload-preview-author { margin-bottom: 13px; }
  .upload-source-caption { margin-top: 18px; }
}
@media (max-width: 600px) {
  .submission-steps { justify-content: flex-start; margin: 0 0 28px; gap: 0; }
  .submission-steps li { gap: 6px; font-size: 11px; }
  .submission-steps li > span { width: 22px; height: 22px; font-size: 10px; }
  .submission-steps li:not(:last-child)::after { width: 16px; margin: 0 7px 0 1px; }
  .upload-surface h2 { font-size: 23px; }
  .upload-intro { font-size: 12px; margin: 10px 0 23px; }
  .upload-surface .upload-drop-zone { padding: 31px 17px; }
  .upload-drop-zone h3 { font-size: 17px; }
  .upload-drop-zone p { font-size: 12px; }
  .upload-pick-actions { flex-direction: column; gap: 10px; margin-top: 21px; }
  .upload-url-zone { padding: 21px 17px; }
  .upload-url-row { flex-wrap: wrap; }
  .upload-url-row input { flex-basis: 100%; }
  .upload-url-row button { width: 100%; }
  .upload-source-row { gap: 10px; }
  .upload-source-row strong { font-size: 12px; }
  .upload-source-row span { font-size: 11px; }
  .upload-source-row .btn { padding: 7px 0; font-size: 11px; }
  .upload-page-actions { gap: 10px; }
  .upload-page-actions > div { width: 100%; display: grid; grid-template-columns: 1fr 1fr; }
  .upload-page-actions .btn { font-size: 12px; padding: 9px 12px; min-height: 42px; }
  .upload-page-actions > button:first-child:not(:last-child) { padding-left: 0; }
  .upload-frame { height: 330px; }
  .upload-preview-heading { gap: 10px; margin-bottom: 19px; }
  .upload-preview-copy h3 { font-size: 21px; }
  .upload-multi-note { text-align: left; }
  .upload-outcome { padding: 27px 0 50px; }
  .modal-overlay[data-surface='project-detail'] .modal-body { padding: 22px; }
  .detail-introduction.has-cover { grid-template-columns: minmax(0, 1fr); gap: 21px; }
  .detail-cover img { aspect-ratio: 1.7; }
  .detail-copy h2 { font-size: 25px; margin: 9px 0 12px; }
  .detail-description { font-size: 13px; margin-top: 16px; }
  .detail-primary-actions { gap: 8px; padding: 22px 0; }
  .detail-primary-actions .btn { font-size: 12px; padding: 9px 12px; }
  .detail-source-discussion { align-items: flex-start; font-size: 12px; }
  .detail-discussion-heading h3 { font-size: 16px; }
  .detail-social { gap: 2px; }
  .detail-social .btn { font-size: 11px; padding: 6px; }
  .detail-comment-form .workbench-feedback { flex-basis: 100%; }
  .detail-comment-form > div > button { margin-left: auto; }
}
@media (prefers-reduced-motion: reduce) { .upload-workspace .upload-surface { animation: none; } }