:root {
  --bg: #0b0d10;
  --panel: #14181d;
  --panel-2: #1b2026;
  --fg: #e7ecef;
  --muted: #9aa4ad;
  --accent: #4cc2ff;
  --accent-2: #2da7e0;
  --ok: #6ee7a7;
  --err: #ff6b6b;
  --warn: #f6c453;
  --border: #232a31;
  --mono: ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f9fc;
    --panel: #ffffff;
    --panel-2: #f1f4f8;
    --fg: #0d1117;
    --muted: #5a6573;
    --border: #d6dde3;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

body {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

header, footer {
  padding: 24px 24px 0 24px;
  text-align: center;
}

footer {
  padding: 24px;
  margin-top: auto;
  color: var(--muted);
  font-size: 13px;
}

h1 {
  margin: 0 0 4px 0;
  font-size: 22px;
  letter-spacing: -0.01em;
}

.lede {
  margin: 0 auto;
  max-width: 640px;
  color: var(--muted);
}

.mono {
  font-family: var(--mono);
  font-size: 0.9em;
}

main {
  flex: 1;
  display: flex;
  justify-content: center;
  padding: 24px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  width: 100%;
  max-width: 720px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
}

.tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
  background: var(--panel-2);
  border-radius: 8px;
  padding: 4px;
}

.tab {
  flex: 1;
  background: transparent;
  border: 0;
  color: var(--muted);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
}

.tab.active {
  background: var(--panel);
  color: var(--fg);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin: 12px 0 4px 0;
}

textarea, input[type="password"], input[type="text"], select {
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--fg);
  border-radius: 8px;
  padding: 10px 12px;
  font: 14px/1.5 var(--mono);
}

textarea {
  min-height: 160px;
  resize: vertical;
}

.row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.row > * { flex: 1 1 160px; }

button.primary {
  width: 100%;
  background: var(--accent);
  color: #04141f;
  border: 0;
  border-radius: 8px;
  padding: 12px 16px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 16px;
}

button.primary:hover { background: var(--accent-2); }
button.primary:disabled { opacity: 0.5; cursor: not-allowed; }

.secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 8px 12px;
  cursor: pointer;
  font-size: 13px;
}

.banner {
  padding: 12px 14px;
  border-radius: 8px;
  margin-top: 12px;
  font-size: 14px;
}

.banner.ok { background: rgba(110, 231, 167, 0.1); color: var(--ok); }
.banner.err { background: rgba(255, 107, 107, 0.1); color: var(--err); }
.banner.warn { background: rgba(246, 196, 83, 0.1); color: var(--warn); }

.share-link {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  align-items: center;
}

.share-link input {
  flex: 1;
  font-family: var(--mono);
  font-size: 12px;
}

.note {
  margin-top: 16px;
  padding: 12px;
  background: var(--panel-2);
  border-radius: 8px;
  font-size: 13px;
  color: var(--muted);
}

.progress {
  height: 4px;
  background: var(--panel-2);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 12px;
}

.progress > div {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 0.15s linear;
}

pre.secret {
  background: var(--panel-2);
  border-radius: 8px;
  padding: 16px;
  overflow: auto;
  font-family: var(--mono);
  font-size: 13px;
  max-height: 400px;
  white-space: pre-wrap;
  word-break: break-word;
}

.file-meta {
  margin-top: 12px;
  font-size: 13px;
  color: var(--muted);
}

.toggle-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  font-size: 14px;
}

.toggle-row input { width: auto; }

.toggle-row label.inline {
  margin: 0;
  display: inline;
  color: var(--fg);
}

.mode-picker {
  display: flex;
  gap: 8px;
  margin: 16px 0 4px 0;
}

.mode-option {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 14px;
  cursor: pointer;
}

.mode-option input { width: auto; }

.mode-option.disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.yk-actions {
  display: flex;
  gap: 8px;
  margin-top: 8px;
  flex-wrap: wrap;
}

.yk-import {
  margin-top: 16px;
  padding: 12px;
  background: var(--panel-2);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.yk-import textarea {
  resize: vertical;
  font-family: var(--mono);
  font-size: 12px;
}

span.ok { color: var(--ok); }
span.err { color: var(--err); }

/* SRI fingerprint footer */
#fingerprint {
  margin: 16px auto 0;
  max-width: 720px;
  font-size: 13px;
}
.fingerprint {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  padding: 0;
  overflow: hidden;
}
.fingerprint.ok { border-color: rgba(110, 231, 167, 0.4); }
.fingerprint.tampered { border-color: var(--err); }
.fingerprint > summary {
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  font-weight: 500;
  list-style: none;
}
.fingerprint > summary::-webkit-details-marker { display: none; }
.fingerprint.ok .fp-status { color: var(--ok); }
.fingerprint.tampered .fp-status { color: var(--err); }
.fingerprint .fp-hint { color: var(--muted); font-weight: normal; }
.fp-body { padding: 0 14px 14px; display: grid; gap: 12px; }
.fp-row { display: grid; grid-template-columns: 140px 1fr; gap: 12px; align-items: start; }
.fp-label { color: var(--muted); font-size: 12px; padding-top: 4px; }
.fp-value { font-family: var(--mono); font-size: 12px; word-break: break-all; cursor: pointer; padding: 4px 6px; border-radius: 4px; background: var(--panel-2); }
.fp-value:hover { background: var(--border); }
.fp-value.copied { background: rgba(110, 231, 167, 0.2); }
.fp-mismatch .fp-value { color: var(--err); }
.fp-table { width: 100%; border-collapse: collapse; font-size: 11px; }
.fp-table th, .fp-table td { padding: 4px 6px; border-bottom: 1px solid var(--border); text-align: left; }
.fp-table th { color: var(--muted); font-weight: normal; }
.fp-table td.num { text-align: right; }
.fp-table td.fp-hash { color: var(--muted); }
.fp-table td.fp-hash:hover { color: var(--fg); }
.fp-text { font-size: 12px; color: var(--muted); line-height: 1.5; }

a { color: var(--accent); }

.file-drop {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 24px;
  text-align: center;
  color: var(--muted);
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.file-drop.dragover { border-color: var(--accent); background: var(--panel-2); }

.pw-meter {
  margin-top: 4px;
  height: 4px;
  background: var(--panel-2);
  border-radius: 2px;
  overflow: hidden;
}

.pw-meter > div {
  height: 100%;
  width: 0%;
  background: var(--err);
  transition: width 0.15s ease, background 0.15s ease;
}