:root {
  --bg: #f4f5f8;
  --card: #ffffff;
  --text: #14161c;
  --muted: #6b7180;
  --line: #e3e6ec;
  --soft: #f1f3f7;
  --accent: #1a6cf0;
  --accent-hover: #1259cc;
  --accent-soft: #e8f0fe;
  --danger: #d8343f;
  --danger-soft: #fdecee;
  --ok: #17a05d;
  --ok-soft: #e4f6ec;
  --radius: 18px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 12px 32px -8px rgba(16, 24, 40, .10);
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1015;
    --card: #171a21;
    --text: #eceef3;
    --muted: #9097a6;
    --line: #2a2f3a;
    --soft: #1f232c;
    --accent: #4c8dff;
    --accent-hover: #6aa0ff;
    --accent-soft: #1b2a45;
    --danger: #ff6b74;
    --danger-soft: #3a1d22;
    --ok: #3ccf86;
    --ok-soft: #173326;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 16px 40px -12px rgba(0, 0, 0, .6);
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
[hidden] { display: none !important; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0; padding: 0; margin: -1px;
}

.page {
  min-height: 100vh;
  max-width: 560px;
  margin: 0 auto;
  padding: 28px 20px 40px;
  display: flex;
  flex-direction: column;
}

/* ---------- шапка ---------- */
.brand { margin-bottom: 28px; display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 32px; }
.brand-link {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--text); text-decoration: none;
  font-weight: 650; font-size: 17px; letter-spacing: -.01em;
}
.logo {
  width: 32px; height: 32px; border-radius: 10px;
  background: var(--accent); color: #fff;
  display: grid; place-items: center;
}

/* ---------- карточка ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
  padding: 32px;
}
h1 { font-size: 26px; line-height: 1.2; letter-spacing: -.02em; margin: 0 0 6px; font-weight: 700; }
.lead { color: var(--muted); margin: 0 0 24px; }
.muted { color: var(--muted); font-size: 14px; margin: 14px 0 0; }
.center { text-align: center; }

/* ---------- область перетаскивания ---------- */
.drop {
  position: relative;
  border: 2px dashed var(--line);
  border-radius: var(--radius);
  background: var(--soft);
  min-height: 200px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: border-color .15s, background .15s, transform .15s;
  outline: none;
}
.drop:hover, .drop:focus-visible { border-color: var(--accent); }
.drop.over {
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: scale(1.01);
}
.drop.has-file { min-height: 0; border-style: solid; cursor: default; }
.drop-empty {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  padding: 28px 16px; pointer-events: none;
}
.drop-icon {
  width: 56px; height: 56px; border-radius: 16px;
  background: var(--card); color: var(--accent);
  display: grid; place-items: center; margin-bottom: 14px;
  box-shadow: 0 1px 2px rgba(16,24,40,.06), 0 4px 12px -4px rgba(16,24,40,.12);
  transition: transform .2s;
}
.drop.over .drop-icon { transform: translateY(-4px); }
.drop-title { font-weight: 600; font-size: 17px; }
.drop-sub { color: var(--muted); font-size: 15px; }
.drop-hint {
  margin-top: 14px; font-size: 13px; color: var(--muted);
  background: var(--card); border: 1px solid var(--line);
  padding: 3px 10px; border-radius: 999px;
}

.drop-file {
  width: 100%;
  display: flex; align-items: center; gap: 14px;
  padding: 16px;
}
.ext {
  flex: none;
  width: 48px; height: 56px; border-radius: 10px;
  background: var(--accent); color: #fff;
  font: 700 11px/1 var(--font); letter-spacing: .04em;
  display: grid; place-items: end center; padding-bottom: 10px;
  position: relative; overflow: hidden;
}
.ext::before {
  content: ""; position: absolute; top: 0; right: 0;
  width: 14px; height: 14px; background: rgba(255,255,255,.35);
  border-bottom-left-radius: 6px;
}
.ext.big { width: 64px; height: 76px; font-size: 13px; padding-bottom: 14px; border-radius: 12px; }
.muted-ext { background: var(--muted); margin: 0 auto 18px; }
.file-info { min-width: 0; flex: 1; display: flex; flex-direction: column; }
.file-name, .file-title {
  font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.file-title { font-size: 20px; margin: 0; letter-spacing: -.01em; }
.file-size { color: var(--muted); font-size: 14px; }

.icon-btn {
  flex: none; width: 36px; height: 36px; border-radius: 10px;
  border: 0; background: transparent; color: var(--muted);
  display: grid; place-items: center; cursor: pointer;
}
.icon-btn:hover { background: var(--card); color: var(--text); }

/* ---------- срок хранения ---------- */
.ttl { border: 0; padding: 0; margin: 24px 0 0; min-width: 0; }
.ttl legend { font-size: 14px; font-weight: 600; margin-bottom: 10px; padding: 0; }
.seg {
  display: grid; grid-template-columns: repeat(5, 1fr);
  background: var(--soft); border-radius: 14px; padding: 4px; gap: 4px;
}
.seg label { position: relative; }
.seg input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.seg span {
  display: flex; align-items: center; justify-content: center; gap: 5px;
  padding: 9px 4px; border-radius: 10px;
  font-size: 14px; font-weight: 550; color: var(--muted);
  transition: background .15s, color .15s, box-shadow .15s;
  user-select: none; white-space: nowrap;
}
.seg label:hover span { color: var(--text); }
.seg input:checked + span {
  background: var(--card); color: var(--text);
  box-shadow: 0 1px 2px rgba(16,24,40,.08), 0 2px 6px -2px rgba(16,24,40,.12);
}
.seg input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 1px; }
.lock {
  width: 12px; height: 12px; display: inline-block; flex: none;
  background: currentColor; opacity: .7;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M7 10V7a5 5 0 0 1 10 0v3h1a2 2 0 0 1 2 2v8a2 2 0 0 1-2 2H6a2 2 0 0 1-2-2v-8a2 2 0 0 1 2-2h1zm2 0h6V7a3 3 0 0 0-6 0v3z'/%3E%3C/svg%3E") center / contain no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M7 10V7a5 5 0 0 1 10 0v3h1a2 2 0 0 1 2 2v8a2 2 0 0 1-2 2H6a2 2 0 0 1-2-2v-8a2 2 0 0 1 2-2h1zm2 0h6V7a3 3 0 0 0-6 0v3z'/%3E%3C/svg%3E") center / contain no-repeat;
}

/* ---------- вход ---------- */
.auth {
  margin-top: 20px; padding: 16px;
  border-radius: 14px; background: var(--accent-soft);
  animation: appear .2s ease-out;
}
.auth-why { margin: 0 0 12px; font-size: 14px; }
.auth-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.field { min-width: 0; display: flex; flex-direction: column; gap: 4px; font-size: 13px; font-weight: 600; }
.field input {
  width: 100%; min-width: 0;
  font: inherit; font-weight: 400; font-size: 15px;
  padding: 10px 12px; border-radius: 10px;
  border: 1px solid var(--line); background: var(--card); color: var(--text);
  outline: none; transition: border-color .15s, box-shadow .15s;
}
.field input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent); }
.field input.invalid { border-color: var(--danger); }

@keyframes appear { from { opacity: 0; transform: translateY(-4px); } }

/* ---------- кнопки ---------- */
.primary {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; margin-top: 24px;
  padding: 14px 20px; border: 0; border-radius: 14px;
  background: var(--accent); color: #fff;
  font: 600 16px/1.2 var(--font); text-decoration: none;
  cursor: pointer; transition: background .15s, opacity .15s, transform .05s;
}
.primary:hover { background: var(--accent-hover); }
.primary:active { transform: translateY(1px); }
.primary:disabled { opacity: .45; cursor: not-allowed; background: var(--accent); }
.secondary {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 11px 16px; border-radius: 12px;
  background: var(--soft); color: var(--text); border: 1px solid var(--line);
  font: 550 15px/1.2 var(--font); text-decoration: none; cursor: pointer;
}
.secondary:hover { border-color: var(--muted); }
.link-btn, .link {
  background: none; border: 0; padding: 0; font: inherit; font-size: 14px;
  color: var(--accent); cursor: pointer; text-decoration: none;
}
.link-btn:hover, .link:hover { text-decoration: underline; }
.center .link { display: inline-block; margin-top: 20px; }

/* ---------- ошибки и прогресс ---------- */
.error {
  margin: 16px 0 0; padding: 10px 14px; border-radius: 12px;
  background: var(--danger-soft); color: var(--danger); font-size: 14px;
}
.progress { margin-top: 24px; }
.bar { height: 8px; border-radius: 999px; background: var(--soft); overflow: hidden; }
.bar-fill {
  height: 100%; width: 0; border-radius: inherit; background: var(--accent);
  transition: width .2s linear;
}
.progress-row {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 10px; font-size: 14px; color: var(--muted);
  font-variant-numeric: tabular-nums;
}

/* ---------- результат ---------- */
.result { text-align: center; animation: appear .25s ease-out; }
.result .lead { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.done-icon {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--ok-soft); color: var(--ok);
  display: grid; place-items: center; margin: 0 auto 16px;
}
.linkbox {
  display: flex; gap: 8px; align-items: stretch;
  margin-top: 16px; padding: 6px; border-radius: 14px;
  border: 1px solid var(--line); background: var(--soft);
}
.url {
  flex: 1; min-width: 0; align-self: center; text-align: left;
  color: var(--text); text-decoration: none;
  font: 500 15px/1.35 var(--mono); padding: 4px 10px;
  overflow-wrap: anywhere; word-break: normal; user-select: all;
}
a.url:hover { color: var(--accent); }
.copy {
  flex: none; border: 0; border-radius: 10px; padding: 10px 16px;
  background: var(--text); color: var(--card);
  font: 600 14px/1 var(--font); cursor: pointer; transition: background .15s;
}
.copy.copied { background: var(--ok); color: #fff; }
.actions { display: flex; gap: 10px; justify-content: center; margin-top: 24px; flex-wrap: wrap; }

/* ---------- страница файла ---------- */
.file-head { display: flex; align-items: center; gap: 18px; }
.file-page .primary { margin-top: 28px; }

.foot { margin-top: auto; padding-top: 32px; text-align: center; color: var(--muted); font-size: 13px; }

@media (max-width: 520px) {
  .page { padding: 18px 12px 28px; }
  .card { padding: 22px 18px; border-radius: 20px; }
  h1 { font-size: 22px; }
  #ttl { grid-template-columns: repeat(6, 1fr); }
  #ttl label { grid-column: span 2; }
  #ttl label:nth-child(n+4) { grid-column: span 3; }
  .auth-fields { grid-template-columns: 1fr; }
  .drop { min-height: 170px; }
}


/* =========================================================
   Типы файлов: цвет ярлыка
   ========================================================= */
.k-image   { --k: #d9468f; }
.k-video   { --k: #7c3aed; }
.k-audio   { --k: #0891b2; }
.k-pdf     { --k: #dc2626; }
.k-doc     { --k: #2563eb; }
.k-sheet   { --k: #16a34a; }
.k-slides  { --k: #ea580c; }
.k-archive { --k: #a16207; }
.k-code    { --k: #0f766e; }
.k-text    { --k: #64748b; }
.k-app     { --k: #334155; }
.k-disk    { --k: #4f46e5; }
.k-font    { --k: #9333ea; }
.k-other   { --k: #6b7280; }
@media (prefers-color-scheme: dark) {
  .k-app { --k: #64748b; }
  .k-text { --k: #7c8aa0; }
  .tag { color: color-mix(in srgb, var(--k, var(--muted)) 55%, #fff); background: color-mix(in srgb, var(--k, var(--muted)) 24%, transparent); }
}
.ext[class*="k-"] { background: var(--k); }
.tag {
  display: inline-flex; align-items: center;
  padding: 1px 8px; border-radius: 999px;
  font-size: 12px; font-weight: 600; line-height: 18px; white-space: nowrap;
  color: var(--k, var(--muted));
  background: color-mix(in srgb, var(--k, var(--muted)) 13%, transparent);
}

/* =========================================================
   Режим администратора
   ========================================================= */
.adm-corner { display: flex; align-items: center; gap: 8px; }
.adm-key {
  width: 34px; height: 34px; border-radius: 10px;
  display: grid; place-items: center;
  border: 0; background: transparent; color: var(--muted);
  opacity: .35; cursor: pointer; transition: opacity .15s, background .15s;
}
.adm-key:hover, .adm-key:focus-visible { opacity: 1; background: var(--card); outline: none; }
.adm-chip {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 5px 6px 5px 10px; border-radius: 999px;
  background: var(--card); border: 1px solid var(--line);
  font-size: 13px; font-weight: 600;
}
.adm-chip svg { color: var(--accent); }
.adm-chip .link-btn { font-size: 13px; padding: 2px 8px; border-radius: 999px; }
.adm-chip .link-btn:hover { background: var(--soft); text-decoration: none; }

body.is-admin .page { max-width: 1180px; }
.workspace { display: grid; gap: 24px; align-items: start; }
.workspace > * { min-width: 0; }
body.is-admin .workspace { grid-template-columns: minmax(0, 520px) minmax(0, 1fr); }

.panel {
  padding: 22px 22px 14px;
  display: flex; flex-direction: column; min-height: 420px;
  position: sticky; top: 20px; max-height: calc(100vh - 112px);
  animation: appear .25s ease-out;
}
.panel-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; margin-bottom: 14px; }
.panel h2, .dialog h2 { font-size: 19px; margin: 0; letter-spacing: -.01em; }
.panel-sub { color: var(--muted); font-size: 13px; margin: 2px 0 0; }
.panel .icon-btn:hover { background: var(--soft); }
.panel .icon-btn.spin svg { animation: spin .6s linear; }
@keyframes spin { to { transform: rotate(360deg); } }

.seg-sm { grid-template-columns: repeat(3, 1fr); margin-bottom: 10px; }
.seg-sm span { font-size: 13px; padding: 7px 4px; }
.seg-sm b { font-weight: 600; font-size: 12px; color: var(--muted); background: var(--line); border-radius: 999px; padding: 0 6px; margin-left: 2px; }
.seg-forever input:checked + span { color: var(--forever); }

:root { --forever: #b7791f; --forever-soft: #fdf6e7; }
@media (prefers-color-scheme: dark) { :root { --forever: #f0b44c; --forever-soft: #2c2415; } }

.adm-list { overflow-y: auto; margin: 0 -8px; padding: 0 8px; flex: 1; scrollbar-gutter: stable; }
.adm-group {
  display: flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em;
  color: var(--muted); margin: 14px 4px 6px;
}
.adm-group:first-child { margin-top: 4px; }
.adm-group::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.adm-group.g-forever { color: var(--forever); }
.adm-empty { color: var(--muted); text-align: center; margin: 48px 0; font-size: 14px; }

.item {
  display: flex; gap: 12px; align-items: center;
  padding: 10px; border-radius: 14px;
  border: 1px solid transparent;
  transition: background .15s, opacity .25s, transform .25s;
}
.item:hover { background: var(--soft); }
.item + .item { margin-top: 2px; }
.item.is-forever { background: var(--forever-soft); border-color: color-mix(in srgb, var(--forever) 30%, transparent); }
.item.is-forever + .item.is-forever { margin-top: 6px; }
.item.removing { opacity: 0; transform: translateX(16px); }
.item.expired { opacity: .45; }
.ext.sm { width: 38px; height: 46px; font-size: 9.5px; padding-bottom: 8px; border-radius: 9px; }
.ext.sm::before { width: 11px; height: 11px; }
.item-body { flex: 1; min-width: 0; }
.item-line { display: flex; align-items: center; gap: 8px; min-width: 0; }
.item-name {
  color: var(--text); text-decoration: none; font-weight: 600; font-size: 14.5px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0;
}
.item-name:hover { color: var(--accent); }
.item-meta { color: var(--muted); font-size: 12.5px; margin-top: 1px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.item-meta .mono { font-family: var(--mono); font-size: 12px; }
.life { display: flex; align-items: center; gap: 10px; margin-top: 7px; }
.life-bar { flex: 1; height: 5px; border-radius: 999px; background: var(--line); overflow: hidden; }
.life-bar i { display: block; height: 100%; border-radius: inherit; background: var(--ok); transition: width 1s linear, background .3s; }
.life.warn .life-bar i { background: #e0a100; }
.life.danger .life-bar i { background: var(--danger); }
.life-left { font-size: 12px; color: var(--muted); white-space: nowrap; font-variant-numeric: tabular-nums; min-width: 92px; text-align: right; }
.life.danger .life-left { color: var(--danger); font-weight: 600; }
.inf { font-weight: 700; color: var(--forever); }
.item-actions { display: flex; gap: 2px; flex: none; }
.item .icon-btn { width: 32px; height: 32px; }
.item .icon-btn:hover { background: var(--card); color: var(--text); }
.icon-btn.del:hover { color: var(--danger); }
.icon-btn.del.confirm {
  width: auto; padding: 0 10px; background: var(--danger); color: #fff;
  font: 600 12.5px/1 var(--font);
}
.icon-btn.ok { color: var(--ok) !important; }

/* диалог входа */
.dialog {
  border: 1px solid var(--line); border-radius: 22px; padding: 26px;
  width: min(380px, calc(100vw - 32px));
  background: var(--card); color: var(--text); box-shadow: var(--shadow);
}
.dialog::backdrop { background: rgba(10, 12, 18, .45); backdrop-filter: blur(3px); }
.dialog[open] { animation: appear .2s ease-out; }
.dialog .field { margin-top: 14px; }
.dialog .panel-sub { margin-bottom: 4px; }
.dialog-actions { display: flex; gap: 10px; margin-top: 20px; }
.dialog-actions > * { flex: 1; margin: 0; padding: 12px; }

@media (max-width: 960px) {
  body.is-admin .workspace { grid-template-columns: 1fr; }
  body.is-admin .workspace > main { max-width: 520px; width: 100%; justify-self: center; }
  .panel { position: static; max-height: none; min-height: 0; }
  .adm-list { overflow: visible; }
}
@media (max-width: 520px) {
  .panel { padding: 18px 12px 10px; }
  .seg-sm span { font-size: 12px; }
  .life-left { min-width: 84px; }
}