/* Native CSS; personal project archive. Variance 4 / motion 2 / density 5. */
:root {
  color-scheme: light;
  --bg: #f0f2f3;
  --paper: #fff;
  --ink: #252b30;
  --muted: #626b73;
  --line: #dce1e3;
  --fill: #f3f5f5;
  --accent: #a44820;
  --accent-hover: #873917;
  --accent-soft: #f9ede4;
  --danger: #b42318;
  --ok: #31654a;
  --ok-bg: #edf5ee;
  --radius: 12px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
html { background: var(--bg); color: var(--ink); font-family: var(--font); -webkit-font-smoothing: antialiased; }
body { margin: 0; border-top: 4px solid var(--accent); }
a { color: inherit; text-underline-offset: 4px; }
button, input, textarea, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
.top, main, footer { width: min(1120px, calc(100% - 64px)); margin-inline: auto; }
.top { display: flex; align-items: center; gap: 24px; min-height: 76px; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; flex-shrink: 0; }
.brand img { width: 36px; height: 36px; border-radius: 50%; object-fit: cover; }
.brand strong { font-size: 16px; font-weight: 650; letter-spacing: .02em; }
.top nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.top nav a { padding: 9px 12px; border-radius: 8px; color: var(--muted); font-size: 13px; text-decoration: none; white-space: nowrap; }
.top nav .admin-link { margin-left: 12px; padding-inline: 16px; background: var(--accent); color: #fff; font-weight: 600; }
main { min-height: calc(100dvh - 166px); }
.index-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; padding: 42px 0 28px; }
.index-head h1, .manage-title h1 { margin: 0; font-size: clamp(28px, 4vw, 36px); font-weight: 650; letter-spacing: -.04em; line-height: 1.3; }
.index-head p { margin: 12px 0 0; max-width: 35em; color: var(--muted); font-size: 14px; line-height: 1.8; }
.search { display: flex; gap: 8px; flex: 1; max-width: 360px; }
.search input, .login input, .upload input, .upload textarea, .upload select,
.inline-edit input, .inline-edit textarea, .inline-edit select {
  width: 100%; min-width: 0; min-height: 44px; padding: 10px 12px;
  border: 1px solid #c4cdd1; border-radius: 8px; background: var(--paper); color: var(--ink); font-size: 14px;
}
input::placeholder, textarea::placeholder { color: #68737b; opacity: 1; }
.search input:focus, .login input:focus, .upload input:focus, .upload textarea:focus,
.upload select:focus, .inline-edit input:focus, .inline-edit textarea:focus { border-color: var(--accent); }
.search input { flex: 1; }
.search button, .login button, .upload > button, .detail-actions button, .detail-actions a, .inline-edit button {
  display: inline-flex; align-items: center; justify-content: center; min-height: 44px;
  padding: 0 18px; border: 1px solid transparent; border-radius: 8px; background: var(--accent);
  color: #fff; font-size: 14px; font-weight: 600; text-decoration: none; white-space: nowrap;
}
.catalog-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-bottom: 20px; padding: 14px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.count { margin: 0; color: var(--muted); font-size: 13px; }
.count strong { color: var(--ink); font-weight: 650; }
.catalog-toolbar .catalog-note { margin-left: auto; color: var(--muted); font-size: 12px; }
.rows { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; padding-bottom: 48px; }
.row { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-content: stretch; grid-template-rows: 1fr auto; gap: 20px 12px; min-width: 0; padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); transition: border-color 160ms, box-shadow 160ms; }
.row-link { display: flex; flex-direction: column; grid-column: 1 / -1; justify-content: space-between; gap: 20px; min-width: 0; text-decoration: none; }
.row-body { display: block; }
.project-index { display: inline-flex; margin-bottom: 14px; color: var(--accent); font-variant-numeric: tabular-nums; font-size: 12px; font-weight: 650; }
.row h2 { margin: 0; font-size: 19px; font-weight: 650; letter-spacing: -.02em; line-height: 1.5; overflow-wrap: anywhere; }
.row p { margin: 10px 0 0; color: var(--muted); font-size: 14px; line-height: 1.8; }
.row-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; color: var(--muted); font-size: 12px; }
.row-meta time { margin-left: auto; font-variant-numeric: tabular-nums; }
.status { color: var(--accent); background: var(--accent-soft); border-radius: 5px; padding: 3px 8px; font-weight: 600; }
.copy { grid-column: 2; min-height: 36px; padding: 7px 12px; border: 1px solid #ced6d9; border-radius: 8px; background: var(--fill); color: var(--ink); font-size: 12px; font-weight: 600; white-space: nowrap; }
.row > .copy { margin-top: -4px; }
.row::after { content: ""; grid-row: 2; grid-column: 1; align-self: center; height: 1px; background: var(--line); }
.back { display: inline-block; margin: 24px 0 12px; color: var(--muted); font-size: 13px; text-decoration: none; }
.detail-bar { display: flex; justify-content: space-between; align-items: end; gap: 24px; padding: 12px 0 24px; }
.detail-bar h1 { margin: 0; font-size: clamp(24px, 3vw, 32px); line-height: 1.4; }
.detail-summary { max-width: 640px; margin: 12px 0 0; color: var(--muted); font-size: 14px; line-height: 1.8; }
.detail-meta { color: var(--muted); font-size: 12px; }
.detail-actions { display: flex; gap: 8px; }
.detail-actions a { border-color: var(--line); background: var(--paper); color: var(--ink); }
.viewer { height: min(78dvh, 980px); margin-bottom: 48px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); }
.viewer iframe { width: 100%; height: 100%; border: 0; }
.login { width: min(460px, 100%); margin: clamp(40px, 9vh, 96px) auto; padding: 36px; border: 1px solid var(--line); border-top: 4px solid var(--accent); border-radius: var(--radius); background: var(--paper); box-shadow: 0 16px 48px #3448540a; }
.login > p:first-child { margin: 0 0 12px; color: var(--accent); font-size: 13px; font-weight: 600; }
.login h1 { margin: 0 0 26px; font-size: 28px; letter-spacing: -.03em; line-height: 1.4; }
.login label, .upload label { display: grid; gap: 8px; margin: 16px 0; color: #46515a; font-size: 13px; }
.login button { width: 100%; margin-top: 8px; }
.login em { display: block; margin-bottom: 16px; padding: 12px; border-radius: 8px; background: #fff0ee; color: var(--danger); font-style: normal; font-size: 13px; line-height: 1.7; }
.login .hint { margin: 24px 0 0; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; line-height: 1.8; }
.manage-title { display: flex; justify-content: space-between; align-items: end; gap: 20px; padding: 36px 0 24px; border-bottom: 1px solid var(--line); }
.manage-title p { margin: 0 0 8px; color: var(--accent); font-size: 13px; }
.manage-title form button { padding: 9px 14px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); color: var(--muted); }
.manage-grid { display: grid; grid-template-columns: 340px minmax(0, 1fr); gap: 24px; align-items: start; padding: 24px 0 48px; }
.upload, .manage-list { min-width: 0; padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); }
.upload { background: #faf6f2; }
.upload h2, .manage-list h2 { margin: 0 0 20px; font-size: 18px; font-weight: 650; }
.upload textarea, .inline-edit textarea { resize: vertical; }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.upload input[type=file] { padding: 8px; font-size: 12px; }
.upload input[type=file]::file-selector-button { padding: 6px 8px; border: 0; border-radius: 4px; background: var(--fill); color: var(--ink); }
.upload > button { width: 100%; margin-top: 8px; }
.upload > p { margin: 16px 0 0; color: var(--muted); font-size: 12px; line-height: 1.8; }
.manage-row { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; gap: 12px; align-items: center; padding: 22px 0; border-top: 1px solid var(--line); }
.manage-row > div { display: grid; grid-column: 1 / -1; gap: 8px; min-width: 0; }
.manage-row b { font-size: 15px; line-height: 1.6; }
.manage-row span, .manage-row code.share { color: var(--muted); font-size: 12px; }
.manage-row code.share { overflow-wrap: anywhere; line-height: 1.7; }
.manage-row > a { color: var(--accent); font-size: 13px; text-decoration: none; }
.manage-row > .copy { grid-column: auto; }
.manage-row details { grid-column: 1 / -1; grid-row: 3; padding: 12px; border-radius: 8px; background: var(--fill); }
.manage-row summary { color: var(--accent); font-size: 13px; cursor: pointer; }
.manage-row > form button { padding: 8px; border: 0; background: none; color: var(--danger); font-size: 12px; }
.inline-edit { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 16px; }
.inline-edit label { display: grid; gap: 6px; min-width: 0; color: var(--muted); font-size: 12px; }
.inline-edit button { align-self: end; }
.notice { padding: 14px 16px; border: 1px solid #c8dccb; background: var(--ok-bg); color: var(--ok); border-radius: 8px; font-size: 13px; line-height: 1.7; }
.empty { grid-column: 1 / -1; padding: 64px 24px; border: 1px dashed #c5cdd1; border-radius: var(--radius); text-align: center; color: var(--muted); }
.empty h1, .empty h2 { color: var(--ink); font-size: 22px; }
.empty a { display: inline-block; margin-top: 12px; color: var(--accent); }
footer { display: flex; justify-content: space-between; gap: 16px; padding: 24px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; line-height: 1.7; }
footer a { text-decoration: none; }
.toast { position: fixed; z-index: 30; left: 50%; bottom: 28px; max-width: calc(100% - 32px); transform: translate(-50%, 8px); opacity: 0; padding: 12px 18px; border-radius: 8px; background: var(--ink); color: #fff; font-size: 13px; pointer-events: none; transition: transform 180ms, opacity 180ms; }
.toast.on { opacity: 1; transform: translate(-50%, 0); }
@media (hover: hover) and (pointer: fine) {
  .top nav a:hover { background: #e3e8e9; color: var(--ink); }
  .top nav .admin-link:hover, .search button:hover, .login button:hover, .upload > button:hover, .inline-edit button:hover { background: var(--accent-hover); color: #fff; }
  .row:hover { border-color: #bac5ca; box-shadow: 0 5px 18px #34485408; }
  .row-link:hover h2 { color: var(--accent); }
  .copy:hover { background: #e6ebec; border-color: #b5c1c6; }
}
@media (max-width: 980px) { .manage-grid { grid-template-columns: 300px minmax(0, 1fr); gap: 16px; } .top nav a { padding-inline: 8px; } }
@media (max-width: 760px) {
  .top, main, footer { width: calc(100% - 32px); }
  .top { min-height: 68px; gap: 12px; }
  .top nav { gap: 0; }
  .top nav a { padding: 9px 8px; }
  .top nav a[href="https://dtongxue.com/"], .top nav a[href="https://download.dtongxue.com/"], .top nav a[href="https://tools.dtongxue.com/"] { display: none; }
  .top nav .admin-link { margin-left: 4px; padding-inline: 12px; }
  .index-head { flex-direction: column; align-items: stretch; gap: 22px; padding: 28px 0 22px; }
  .search { max-width: none; }
  .rows { grid-template-columns: 1fr; gap: 12px; }
  .row { padding: 20px; }
  .row h2 { font-size: 18px; }
  .catalog-toolbar .catalog-note { display: none; }
  .detail-bar { flex-direction: column; align-items: stretch; }
  .detail-actions { flex-wrap: wrap; }
  .viewer { height: 72dvh; }
  .manage-grid { grid-template-columns: 1fr; }
  .manage-title { padding-top: 28px; }
  .login { padding: 28px 24px; }
  footer { flex-direction: column; gap: 6px; }
}
@media (max-width: 390px) { .brand strong { font-size: 14px; } .brand { gap: 8px; } .top nav a { font-size: 12px; } .row-meta time { margin-left: 0; } .pair, .inline-edit { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; } }