:root {
  --bg: #0f1115;
  --panel: #171a21;
  --panel-2: #1e222b;
  --border: #2a2f3a;
  --text: #e6e8ec;
  --muted: #9aa3b2;
  --accent: #4f8cff;
  --accent-hover: #3d78e8;
  --danger: #e5484d;
  --ok: #30a46c;
  --warn: #f5a524;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 1000px; margin: 0 auto; padding: 24px 20px 60px; }
.container-narrow { max-width: 460px; margin: 0 auto; padding: 60px 20px; }

header.topbar {
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}
header.topbar .inner {
  max-width: 1000px; margin: 0 auto; padding: 14px 20px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
header.topbar .brand { font-weight: 600; letter-spacing: .2px; }
header.topbar nav { display: flex; align-items: center; gap: 16px; }

h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 17px; margin: 28px 0 12px; }
.subtitle { color: var(--muted); margin: 0 0 24px; font-size: 14px; }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 20px;
}

label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.field { margin-bottom: 16px; }

input[type=text], input[type=password], input[type=datetime-local], select {
  width: 100%;
  padding: 9px 11px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 7px;
  color: var(--text);
  font: inherit;
}
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

button, .btn {
  display: inline-block;
  padding: 9px 16px;
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: 7px;
  font: inherit;
  font-weight: 500;
  cursor: pointer;
}
button:hover, .btn:hover { background: var(--accent-hover); text-decoration: none; }
.btn-secondary { background: var(--panel-2); border: 1px solid var(--border); color: var(--text); }
.btn-secondary:hover { background: var(--border); }
.btn-danger { background: transparent; border: 1px solid var(--danger); color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-sm { padding: 5px 10px; font-size: 13px; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th {
  text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .4px;
  color: var(--muted); font-weight: 600; padding: 8px 10px; border-bottom: 1px solid var(--border);
}
td { padding: 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tr:last-child td { border-bottom: 0; }

.badge {
  display: inline-block; padding: 2px 8px; border-radius: 20px;
  font-size: 12px; font-weight: 500;
}
.badge-active { background: rgba(48,163,108,.15); color: var(--ok); }
.badge-expired { background: rgba(245,165,36,.15); color: var(--warn); }
.badge-revoked { background: rgba(229,72,77,.15); color: var(--danger); }

.error {
  background: rgba(229,72,77,.1); border: 1px solid rgba(229,72,77,.35);
  color: #ff9ea1; padding: 10px 12px; border-radius: 7px; margin-bottom: 16px; font-size: 14px;
}

.muted { color: var(--muted); }
.mono { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 13px; }
.stat-row { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 20px; }
.stat {
  flex: 1 1 130px; background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 16px;
}
.stat .value { font-size: 26px; font-weight: 600; }
.stat .label { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .4px; }

.breadcrumb { font-size: 14px; margin-bottom: 12px; color: var(--muted); }
.breadcrumb a { cursor: pointer; }

.file-list { border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.file-row {
  display: flex; align-items: center; gap: 10px; padding: 9px 12px;
  border-bottom: 1px solid var(--border); cursor: pointer;
}
.file-row:last-child { border-bottom: 0; }
.file-row:hover { background: var(--panel-2); }
.file-row.selected { background: rgba(79,140,255,.14); }
.file-row .icon { width: 18px; text-align: center; color: var(--muted); }
.file-row .name { flex: 1; }
.file-row .size { color: var(--muted); font-size: 13px; }

.copy-row { display: flex; gap: 8px; align-items: center; }
.copy-row input { flex: 1; }

.share-card { text-align: center; }
.share-card .filename { font-size: 20px; font-weight: 600; margin: 12px 0 6px; word-break: break-all; }
.share-card .meta { color: var(--muted); font-size: 14px; margin-bottom: 24px; }
.share-card .btn { padding: 12px 28px; font-size: 16px; }