:root {
  --bg: #0d0d0d;
  --surface: #1a1a1a;
  --surface-2: #2d2d2d;
  --text: #e0e0e0;
  --text-2: #999;
  --accent: #4a9eda;
  --blood: #ff0000;
  --blood-dim: #c84040;
  --silver: #a8a8a8;
  --border: #333;
  --radius: 6px;
  --gap: 16px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

* { box-sizing: border-box; }

header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

#header-back {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-2);
  text-decoration: none;
  font-size: 13px;
  font-weight: bold;
  padding: 8px 14px;
  transition: color 150ms, border-color 150ms, background 150ms;
}

#header-back:hover {
  color: var(--text);
  border-color: var(--text-2);
  background: var(--bg);
}

.brand h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
}

.brand .subtitle {
  color: var(--text-2);
  font-size: 12px;
  margin-left: 8px;
}

main {
  flex: 1;
  padding: 32px 24px;
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: var(--gap);
}

.panel h2 {
  margin: 0 0 var(--gap) 0;
  font-size: 16px;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.panel p {
  color: var(--text-2);
  margin-top: 0;
}

input[type="password"],
input[type="text"],
input[type="file"],
textarea {
  width: 100%;
  padding: 10px 12px;
  margin-bottom: 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  outline: none;
}

input[type="password"]:focus,
input[type="text"]:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(74, 158, 218, 0.25);
}

.check {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-2);
  font-size: 13px;
  margin-bottom: 16px;
}

button {
  padding: 10px 20px;
  background: var(--blood-dim);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 14px;
  font-weight: bold;
  cursor: pointer;
  transition: opacity 150ms, box-shadow 150ms;
  box-shadow: 0 0 12px rgba(200, 64, 64, 0.35);
}

button:hover {
  opacity: 0.9;
  box-shadow: 0 0 18px rgba(200, 64, 64, 0.55);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

button.secondary {
  background: var(--surface-2);
  color: var(--text);
  box-shadow: none;
  border: 1px solid var(--border);
}

button.secondary:hover {
  background: var(--bg);
}

.msg {
  margin-top: 12px;
  font-size: 13px;
  color: var(--text-2);
}

.msg.error { color: #ff6b6b; }
.msg.ok { color: #6bff9e; }

.vault-title {
  margin: 32px 0 16px;
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.vault-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--gap);
}

.item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.item-media {
  width: 100%;
  aspect-ratio: 16 / 10;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.item-media img,
.item-media video {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.item-info {
  padding: 14px;
  flex: 1;
}

.item-info h3 {
  margin: 0 0 8px;
  font-size: 14px;
  color: var(--text);
  word-break: break-word;
}

.item-info .desc {
  color: var(--text-2);
  font-size: 13px;
  margin-bottom: 8px;
  word-break: break-word;
}

.item-info .notes {
  color: var(--silver);
  font-size: 12px;
  white-space: pre-wrap;
  word-break: break-word;
  margin-bottom: 10px;
}

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

.item-actions button {
  flex: 1;
  padding: 6px 10px;
  font-size: 12px;
  box-shadow: none;
  background: #333;
  color: var(--text);
}

.item-actions button.delete {
  background: var(--blood-dim);
  color: #fff;
}

.item-actions button:hover {
  opacity: 0.85;
}

.hidden { display: none !important; }

footer {
  text-align: center;
  padding: 20px;
  color: var(--text-2);
  font-size: 12px;
  border-top: 1px solid var(--border);
}

.share-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.share-row input {
  flex: 1;
  min-width: 200px;
  margin-bottom: 0;
}

.share-panel p {
  color: var(--text-2);
  margin-top: 0;
}

@media (max-width: 600px) {
  main { padding: 20px 12px; }
  .vault-list { grid-template-columns: 1fr; }
  header { flex-direction: column; align-items: flex-start; gap: 8px; }
}