:root {
  --bg: #0f1419;
  --fg: #e8eef4;
  --muted: #9aa8b5;
  --accent: #3d8bfd;
  --ok: #3dd68c;
  --error: #f07178;
  --panel: rgba(255, 255, 255, 0.04);
  --border: rgba(255, 255, 255, 0.1);
  --font: "Segoe UI", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--fg);
  background:
    radial-gradient(ellipse 80% 50% at 20% 0%, #1a2838 0%, transparent 55%),
    radial-gradient(ellipse 60% 40% at 90% 100%, #152030 0%, transparent 50%),
    var(--bg);
}

.shell {
  max-width: 36rem;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 3rem;
}

.shell-wide {
  max-width: 52rem;
}

.brand {
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
}

h1 {
  margin: 0 0 0.75rem;
  font-size: 1.75rem;
  font-weight: 600;
  line-height: 1.2;
}

h2 {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
}

.lede {
  margin: 0 0 1.25rem;
  color: var(--muted);
  line-height: 1.55;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin: 0 0 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.nav a {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.95rem;
}

.nav a:hover {
  text-decoration: underline;
}

.form {
  display: grid;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field span {
  font-size: 0.9rem;
  color: var(--muted);
}

input[type="text"],
input[type="password"],
input[type="file"],
textarea {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--panel);
  color: var(--fg);
  font: inherit;
}

textarea {
  resize: vertical;
}

.hint {
  margin: -0.4rem 0 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.btn {
  display: inline-block;
  padding: 0.7rem 1rem;
  border: none;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--fg);
}

.btn-small {
  padding: 0.35rem 0.65rem;
  font-size: 0.85rem;
  font-weight: 500;
}

.status {
  margin: 0 0 1rem;
  padding: 0.75rem 0.9rem;
  border-radius: 6px;
  background: var(--panel);
  border: 1px solid var(--border);
  line-height: 1.4;
}

.status[data-kind="ok"] {
  border-color: color-mix(in srgb, var(--ok) 50%, transparent);
  color: var(--ok);
}

.status[data-kind="error"] {
  border-color: color-mix(in srgb, var(--error) 50%, transparent);
  color: var(--error);
}

.passphrase-panel,
.result {
  margin: 1.25rem 0;
  padding: 1rem 1.1rem;
  border-radius: 8px;
  background: var(--panel);
  border: 1px solid var(--border);
}

.passphrase {
  font-family: ui-monospace, Consolas, monospace;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  word-break: break-all;
  margin: 0.75rem 0;
}

.caveat {
  margin-top: 2rem;
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.5;
}

.row-between {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.table-wrap {
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.table th,
.table td {
  text-align: left;
  padding: 0.65rem 0.5rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.table th {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.85rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

code {
  font-size: 0.9em;
}

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