/* ─── Stone Vault — interactive encryption widget ───────────────
 * A demo experience for the "Vault" station: visitors pick a stone
 * (whose helper data derives a 256-bit AES-GCM key), type a message,
 * see the ciphertext, then try to decrypt with the same or a
 * different stone. Right stone → message; wrong stone → glitch.
 */

.vault {
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
  width: 100%;
  max-height: 75svh;
  overflow-y: auto;
  padding: var(--s-2);
  background: rgba(10,10,10,0.55);
  border: 1px solid var(--c-line);
  scrollbar-width: thin;
  min-width: 0;
}
.vault::-webkit-scrollbar { width: 4px; }
.vault::-webkit-scrollbar-thumb { background: var(--c-line); }

.vault__row {
  display: flex;
  flex-direction: column;
  gap: var(--s-1);
}
.vault__row--actions { flex-direction: row; gap: var(--s-2); }

.vault__label {
  font-family: var(--f-mono);
  font-size: var(--t-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--c-fg-mute);
  margin: 0;
}

/* ── Stone picker ──────────────────────────────────── */
.vault__stones {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--s-1);
  width: 100%;
  min-width: 0;
}

.vault-stone {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 4px;
  padding: 6px;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  color: var(--c-fg-dim);
  cursor: pointer;
  transition: border-color var(--d-fast) var(--ease-out),
              color var(--d-fast) var(--ease-out),
              transform var(--d-fast) var(--ease-out);
  text-align: start;
}
.vault-stone:hover {
  color: var(--c-fg);
  border-color: var(--c-fg-mute);
  transform: translateY(-1px);
}
.vault-stone[aria-pressed="true"] {
  color: var(--c-accent);
  border-color: var(--c-accent);
  box-shadow: inset 0 0 0 1px var(--c-accent);
}
.vault-stone__thumb {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  background: #050505;
  display: block;
  filter: contrast(1.1);
}
.vault-stone[aria-pressed="true"] .vault-stone__thumb {
  filter: contrast(1.15) drop-shadow(0 0 4px var(--c-accent));
}
.vault-stone__name {
  font-family: var(--f-sans);
  font-size: var(--t-xs);
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1.25;
}
.vault-stone__fp {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.05em;
  color: var(--c-fg-mute);
  word-break: break-all;
}

/* ── Message input + actions ───────────────────────── */
.vault__msg {
  width: 100%;
  min-height: 64px;
  padding: 10px 12px;
  font-family: var(--f-mono);
  font-size: var(--t-sm);
  line-height: 1.5;
  color: var(--c-fg);
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  resize: vertical;
}
.vault__msg:focus {
  outline: 0;
  border-color: var(--c-accent);
}

.vault__btn {
  flex: 1;
  padding: 10px 16px;
  font-family: var(--f-mono);
  font-size: var(--t-xs);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--c-bg);
  background: var(--c-accent);
  border: 1px solid var(--c-accent);
  cursor: pointer;
  transition: opacity var(--d-fast) var(--ease-out),
              background var(--d-fast) var(--ease-out);
}
.vault__btn:hover { opacity: 0.85; }
.vault__btn[disabled] { opacity: 0.35; cursor: not-allowed; }
.vault__btn--ghost {
  flex: 0 0 auto;
  background: transparent;
  color: var(--c-fg-dim);
  border-color: var(--c-line);
}
.vault__btn--ghost:hover { color: var(--c-fg); border-color: var(--c-fg-mute); background: rgba(255,255,255,0.04); }

/* ── Output / verdict ──────────────────────────────── */
.vault__hex {
  margin: 0;
  padding: 10px 12px;
  font-family: var(--f-mono);
  font-size: 11px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--c-accent);
  background: #050505;
  border: 1px solid var(--c-line);
  max-height: 140px;
  overflow-y: auto;
  word-break: break-all;
  white-space: pre-wrap;
  scrollbar-width: thin;
}
.vault__hex::-webkit-scrollbar { width: 4px; }
.vault__hex::-webkit-scrollbar-thumb { background: var(--c-line); }

.vault__verdict {
  padding: 10px 12px;
  font-family: var(--f-mono);
  font-size: var(--t-sm);
  line-height: 1.5;
  background: #050505;
  border: 1px solid var(--c-line);
  min-height: 44px;
  word-break: break-word;
  white-space: pre-wrap;
}
.vault__verdict[data-state="success"] {
  color: var(--c-accent);
  border-color: var(--c-accent);
  box-shadow: inset 0 0 12px rgba(255,165,80,0.08);
}
.vault__verdict[data-state="fail"] {
  color: #ff6b6b;
  border-color: #5a1f1f;
  animation: glitch 0.36s steps(2, end) 2;
}
.vault__verdict[data-state="info"] { color: var(--c-fg-dim); }
.vault__verdict__title {
  display: block;
  font-size: 10px;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  margin-bottom: 4px;
  opacity: 0.85;
}

@keyframes glitch {
  0%   { transform: translate(0,0); }
  25%  { transform: translate(-2px,1px); }
  50%  { transform: translate(2px,-1px); }
  75%  { transform: translate(-1px,2px); }
  100% { transform: translate(0,0); }
}

/* ── Hex stream typing animation ───────────────────── */
.vault__hex--typing::after {
  content: '▌';
  animation: blink 0.8s steps(2, end) infinite;
  color: var(--c-accent);
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* ── Mobile ─────────────────────────────────────────── */
@media (max-width: 900px) {
  .vault {
    max-height: none;
    overflow: visible;
  }
  .vault__stones { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .vault-stone__name { font-size: 11px; }
  .vault-stone__fp { display: none; }
  .vault__output__header { flex-direction: column; align-items: stretch; gap: var(--s-1); }
}

/* ── Divider — "or load an existing vault" ─────────── */
.vault__divider {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  margin: var(--s-1) 0;
  color: var(--c-fg-mute);
  font-family: var(--f-mono);
  font-size: var(--t-xs);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}
.vault__divider::before,
.vault__divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--c-line);
}

/* ── Output panel header (label + Download button) ─── */
.vault__output__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-2);
}
.vault__output__header .vault__label { margin: 0; }

.vault__btn--mini {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  font-family: var(--f-mono);
  font-size: var(--t-xs);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--c-fg);
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  cursor: pointer;
  transition: border-color var(--d-fast) var(--ease-out),
              color var(--d-fast) var(--ease-out);
}
.vault__btn--mini:hover { border-color: var(--c-accent); color: var(--c-accent); }
.vault__btn--mini svg { stroke: currentColor; }

/* ── "Loaded · vault-…json" badge ──────────────────── */
.vault__loaded {
  margin: 0;
  padding: 6px 10px;
  font-family: var(--f-mono);
  font-size: var(--t-xs);
  color: var(--c-accent);
  background: rgba(255,255,255,0.02);
  border-inline-start: 2px solid var(--c-accent);
  letter-spacing: var(--tracking-wide);
}

/* The Load button (in the actions row) needs an icon-aligned layout too */
.vault__btn--ghost svg { stroke: currentColor; vertical-align: middle; margin-inline-end: 4px; }