:root {
  --bg: #0f172a;
  --card: #ffffff;
  --ink: #1e293b;
  --muted: #64748b;
  --line: #e2e8f0;
  --brand: #2563eb;
  --brand-d: #1d4ed8;
  --ok-bg: #dcfce7; --ok-ink: #166534;
  --err-bg: #fee2e2; --err-ink: #991b1b;
  --danger: #dc2626;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  line-height: 1.6;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------------- Public download page ---------------- */
body.public {
  background: linear-gradient(135deg, #1e3a8a, #0f172a);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.card {
  background: var(--card);
  width: 100%;
  max-width: 480px;
  border-radius: 18px;
  padding: 32px 28px;
  box-shadow: 0 24px 60px rgba(0,0,0,.35);
}
.card h1 { margin: 0 0 22px; font-size: 22px; text-align: center; }
.field { margin-bottom: 18px; }
.field-label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 8px; }

.tabs { display: flex; flex-wrap: wrap; gap: 8px; }
.tab {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 10px;
  padding: 8px 14px;
  cursor: pointer;
  font-size: 14px;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.tab:hover { border-color: var(--brand); }
.tab.active { background: var(--brand); border-color: var(--brand); color: #fff; }
.tab .ico { font-size: 16px; }

.select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 15px;
  background: #fff;
}
.note { margin: 8px 0 0; font-size: 13px; color: var(--muted); }

.sources { display: flex; flex-direction: column; gap: 8px; }
.source {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  cursor: pointer;
  font-size: 14px;
}
.source.active { border-color: var(--brand); background: #eff6ff; }
.source em { font-style: normal; font-size: 12px; color: var(--brand); background: #dbeafe; padding: 1px 6px; border-radius: 6px; }
.srcstatus { margin-left: auto; font-size: 12px; padding: 1px 8px; border-radius: 999px; white-space: nowrap; }
.srcstatus.checking { color: var(--muted); background: #f1f5f9; }
.srcstatus.up { color: #166534; background: #dcfce7; }
.srcstatus.down { color: #991b1b; background: #fee2e2; }

/* tutorial / telegram buttons */
.tut-row { display: flex; flex-direction: column; gap: 10px; margin: -8px 0 18px; }
.btn-secondary { display: block; width: 100%; text-align: center; box-sizing: border-box; border: 1px solid var(--line); color: var(--brand); background: #fff; padding: 12px 16px; border-radius: 10px; font-size: 15px; font-weight: 600; }
.btn-secondary:hover { background: #eff6ff; border-color: var(--brand); text-decoration: none; }
.btn-secondary.tg { color: #fff; background: #229ED9; border-color: #229ED9; }
.btn-secondary.tg:hover { background: #1c8dc2; border-color: #1c8dc2; }
.tg-ico { vertical-align: -4px; margin-right: 6px; }

.countdown { text-align: center; margin: 18px 0 12px; font-size: 14px; color: var(--muted); min-height: 22px; }
.countdown strong { color: var(--brand); font-size: 18px; }
.countdown .paused { color: var(--muted); }

.btn {
  display: block;
  text-align: center;
  background: var(--brand);
  color: #fff;
  padding: 14px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  width: 100%;
}
.btn:hover { background: var(--brand-d); text-decoration: none; }
.hint { font-size: 12px; color: var(--muted); text-align: center; margin: 12px 0 0; }
.empty { text-align: center; color: var(--muted); padding: 20px 0; }

/* email collection (iOS TestFlight) */
.emailform { display: flex; gap: 8px; margin-top: 6px; }
.emailform input { flex: 1; min-width: 0; padding: 12px 12px; border: 1px solid var(--line); border-radius: 10px; font-size: 15px; }
.emailform .btn { width: auto; flex: 0 0 auto; padding: 12px 18px; }
.emailmsg { font-size: 13px; margin: 10px 0 0; min-height: 18px; }
.emailmsg.ok { color: #166534; }
.emailmsg.err { color: #991b1b; }

/* ---------------- Admin ---------------- */
body.admin { background: #f1f5f9; }
.topbar {
  background: #fff;
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 24px;
  position: sticky; top: 0; z-index: 10;
}
.brand a { font-weight: 700; color: var(--ink); }
.topbar nav { display: flex; align-items: center; gap: 18px; }
.inline { display: inline; margin: 0; }
button.link { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 14px; }
button.link:hover { color: var(--danger); }

.wrap { max-width: 960px; margin: 0 auto; padding: 28px 24px 60px; }
.wrap h1 { margin: 0 0 6px; font-size: 24px; }
.sub { color: var(--muted); margin: 0 0 18px; font-size: 14px; }
.crumbs { color: var(--muted); font-size: 13px; margin: 0 0 14px; }
.crumbs strong { color: var(--ink); }

.panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 20px;
  margin-bottom: 22px;
}
.panel h2 { margin: 0 0 14px; font-size: 16px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  align-items: end;
}
.grid label { display: flex; flex-direction: column; font-size: 12px; color: var(--muted); gap: 4px; }
.grid label.wide { grid-column: 1 / -1; }
.grid input[type=text], .grid input:not([type]), .grid input[type=number], .grid input[type=url], .grid input[type=password] {
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 14px;
  color: var(--ink);
}
.grid label.chk { flex-direction: row; align-items: center; gap: 6px; font-size: 13px; color: var(--ink); }
.grid-actions { display: flex; align-items: center; gap: 10px; grid-column: 1 / -1; flex-wrap: wrap; }

.list { display: flex; flex-direction: column; gap: 14px; }
.item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px 18px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.item .grid { flex: 1; }
.item.disabled { opacity: .55; }
.del { display: flex; flex-direction: column; gap: 8px; align-items: stretch; }
.del form { margin: 0; }

.btn-sm, .danger {
  border: 1px solid var(--brand);
  background: var(--brand);
  color: #fff;
  padding: 7px 12px;
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
}
.btn-sm:hover { background: var(--brand-d); text-decoration: none; }
.btn-sm.ghost { background: #fff; color: var(--brand); }
.btn-sm.ghost:hover { background: #eff6ff; }
.danger { background: #fff; color: var(--danger); border-color: #fecaca; }
.danger:hover { background: var(--danger); color: #fff; }

.badge { font-size: 12px; background: #dbeafe; color: var(--brand-d); padding: 2px 8px; border-radius: 6px; font-weight: 600; }
.hits { font-size: 12px; color: var(--muted); }
code { background: #f1f5f9; padding: 1px 5px; border-radius: 4px; font-size: 13px; }

/* flash */
.flash { padding: 10px 14px; border-radius: 10px; margin-bottom: 16px; font-size: 14px; }
.flash.ok { background: var(--ok-bg); color: var(--ok-ink); }
.flash.err { background: var(--err-bg); color: var(--err-ink); }

/* locked direct-link page */
.lock-note { background: #eff6ff; color: var(--brand-d); border: 1px solid #bfdbfe; border-radius: 10px; padding: 10px 12px; font-size: 13px; text-align: center; margin: 0 0 18px; }
.locked-val { font-size: 16px; font-weight: 600; color: var(--ink); padding: 4px 0; }

/* admin section heading + direct-link cards */
.section-title { margin: 34px 0 4px; font-size: 18px; border-top: 1px solid var(--line); padding-top: 26px; }
.pathinfo { display: flex; align-items: center; gap: 10px; }
.bigcode { font-size: 16px; font-weight: 700; background: #f1f5f9; padding: 4px 10px; border-radius: 8px; }
.pathurls { font-size: 13px; color: var(--muted); display: flex; flex-direction: column; gap: 4px; }
.pathurls code { font-size: 12px; }

/* file manager */
.filerow { align-items: center; }
.filemeta { display: flex; flex-direction: column; gap: 2px; }
.filemeta .fname { font-weight: 600; word-break: break-all; }
.filemeta .fsub { font-size: 12px; color: var(--muted); }
.filecol { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 8px; }
.filelink { display: flex; gap: 8px; align-items: center; min-width: 0; }
.filelink input { flex: 1; min-width: 0; padding: 7px 10px; border: 1px solid var(--line); border-radius: 8px; font-size: 12px; color: var(--muted); background: #f8fafc; }
.attach { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.attach-label { font-size: 13px; color: var(--muted); }
.attach select, .attach input { padding: 7px 9px; border: 1px solid var(--line); border-radius: 8px; font-size: 13px; max-width: 200px; }

.csvbar { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.csvimport { display: flex; gap: 8px; align-items: center; }
.csvimport input[type=file] { font-size: 13px; }

.list-toolbar { display: flex; align-items: center; gap: 14px; padding: 4px 2px 10px; }
.selall { font-size: 13px; color: var(--muted); display: inline-flex; align-items: center; gap: 6px; cursor: pointer; }
.filecheck { width: 16px; height: 16px; flex: 0 0 auto; }
.upload-drop { display: flex; gap: 12px; align-items: end; flex-wrap: wrap; }
.upload-drop input[type=file] { flex: 1; }
.fsub.sha code { font-size: 11px; }
.linkbtn { background: none; border: none; color: var(--brand); cursor: pointer; font-size: 12px; padding: 0; }
.linkbtn:hover { text-decoration: underline; }

/* upload progress */
.uploads { margin-top: 14px; display: flex; flex-direction: column; gap: 10px; }
.up-item { display: grid; grid-template-columns: 1fr 2fr auto; gap: 10px; align-items: center; font-size: 13px; }
.up-name { word-break: break-all; color: var(--ink); }
.up-bar { height: 8px; background: #e2e8f0; border-radius: 999px; overflow: hidden; }
.up-fill { height: 100%; width: 0; background: var(--brand); transition: width .15s ease; }
.up-status { white-space: nowrap; color: var(--muted); font-size: 12px; min-width: 56px; text-align: right; }
.up-status.ok { color: #166534; }
.up-status.err { color: #991b1b; }

/* login */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px; }
.login-card {
  background: #fff;
  width: 100%;
  max-width: 340px;
  padding: 30px 26px;
  border-radius: 16px;
  border: 1px solid var(--line);
  box-shadow: 0 14px 40px rgba(15,23,42,.12);
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.login-card h1 { margin: 0 0 4px; font-size: 20px; text-align: center; }
.login-card label { display: flex; flex-direction: column; font-size: 13px; color: var(--muted); gap: 6px; }
.login-card input {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 9px;
  font-size: 15px;
}