:root {
  --bg: #f4f6fb;
  --card: #ffffff;
  --primary: #2f6bff;
  --primary-dark: #1f4fd6;
  --text: #1f2533;
  --muted: #7a8499;
  --border: #e3e8f0;
  --hover: #f0f4ff;
  --danger: #e5484d;
  --ok: #18a957;
  --shadow: 0 8px 30px rgba(31, 37, 51, 0.08);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.hidden { display: none !important; }

.view { min-height: 100vh; }

/* ---------- Login ---------- */
.login-card {
  max-width: 420px;
  margin: 8vh auto 0;
  padding: 36px 32px;
}
.brand { text-align: center; margin-bottom: 24px; }
.brand .logo {
  width: 56px; height: 56px; border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), #6a8bff);
  color: #fff; font-weight: 700; font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 14px;
}
.brand h1 { font-size: 20px; margin: 0 0 6px; }
.brand .sub { color: var(--muted); font-size: 13px; margin: 0; }

form label {
  display: block; font-size: 13px; color: var(--muted);
  margin-bottom: 14px;
}
form input {
  width: 100%; margin-top: 6px; padding: 10px 12px;
  border: 1px solid var(--border); border-radius: 9px;
  font-size: 14px; color: var(--text); background: #fff;
}
form input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--hover); }
.row { display: flex; gap: 12px; }
.col-4 { flex: 0 0 90px; }
.col-8 { flex: 1; }

button, .btn {
  cursor: pointer; font-size: 14px; border: none; border-radius: 9px;
  padding: 10px 14px; background: var(--hover); color: var(--text);
  transition: all .15s ease; user-select: none; display: inline-block;
}
button:hover, .btn:hover { filter: brightness(0.97); }
.btn.primary { background: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.ghost { background: transparent; border: 1px solid var(--border); }
#login-btn {
  width: 100%; background: var(--primary); color: #fff; font-weight: 600;
  margin-top: 4px;
}
#login-btn:hover { background: var(--primary-dark); }
.error { color: var(--danger); font-size: 13px; margin-top: 10px; min-height: 18px; }

/* ---------- Manager ---------- */
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 22px; background: var(--card); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 5;
}
.topbar-left { display: flex; align-items: center; gap: 12px; }
.logo.small {
  width: 34px; height: 34px; border-radius: 9px; font-size: 12px;
  background: linear-gradient(135deg, var(--primary), #6a8bff); color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 700;
}
.conn-info { font-size: 13px; color: var(--muted); }

.toolbar {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  padding: 16px 22px 8px;
}
.path-box { margin-left: auto; font-size: 13px; color: var(--muted); }
#current-path { color: var(--text); font-weight: 600; }

.status { padding: 0 22px; min-height: 20px; font-size: 13px; color: var(--muted); }
.status.err { color: var(--danger); }
.status.ok { color: var(--ok); }

.file-table-wrap {
  margin: 8px 22px 22px; background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; overflow: hidden; box-shadow: var(--shadow);
}
.file-table { width: 100%; border-collapse: collapse; }
.file-table th, .file-table td {
  padding: 12px 16px; text-align: left; font-size: 14px;
  border-bottom: 1px solid var(--border);
}
.file-table th { color: var(--muted); font-weight: 600; background: #fafbfe; font-size: 13px; }
.file-table tbody tr:last-child td { border-bottom: none; }
.file-table tbody tr:hover { background: var(--hover); }
.c-size { width: 130px; }
.c-time { width: 190px; color: var(--muted); }
.c-actions { width: 220px; }
.name-cell { display: flex; align-items: center; gap: 10px; cursor: pointer; }
.name-cell .ic { font-size: 18px; }
.name-cell.dir { color: var(--primary); font-weight: 600; }
.actions span {
  cursor: pointer; color: var(--primary); margin-right: 14px; font-size: 13px;
}
.actions span:hover { text-decoration: underline; }
.actions .del { color: var(--danger); }
.empty { padding: 40px; text-align: center; color: var(--muted); }

.upload-progress {
  margin: 0 22px 22px; background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; padding: 14px 16px; box-shadow: var(--shadow);
}
.up-item { display: flex; justify-content: space-between; font-size: 13px; margin-bottom: 8px; }
.bar { height: 8px; background: var(--border); border-radius: 6px; overflow: hidden; }
.bar-fill { height: 100%; width: 0%; background: var(--primary); transition: width .2s; }

.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 16px; box-shadow: var(--shadow);
}