/* Munimen Vault chat UI -- single-file vanilla styles.
   Dark neutral palette, legal-firm-appropriate typography, minimal chrome. */

:root {
  --bg: #0e1116;
  --bg-2: #161b22;
  --bg-3: #1f2430;
  --line: #2a3040;
  --fg: #e6e8ee;
  --fg-dim: #9aa3b2;
  --accent: #6aa9ff;
  --accent-fg: #0a0f18;
  --danger: #ef6a6a;
  --good: #5ccf88;
  --warn: #f0c674;
  --radius: 8px;
  --radius-sm: 6px;
  --space: 12px;
  --font-sans:
    ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;
  --font-mono:
    ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono",
    monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--bg-3);
  padding: 1px 5px;
  border-radius: 4px;
}

/* ------------ Top bar ------------ */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  border-bottom: 1px solid var(--line);
  background: var(--bg-2);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.brand-mark {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 3px;
  background: var(--accent);
  transform: translateY(1px);
}

.brand-name {
  font-weight: 600;
  letter-spacing: 0.01em;
}

.brand-sub {
  color: var(--fg-dim);
  font-size: 13px;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--fg-dim);
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.03);
}

.dot.ok {
  background: var(--good);
}

.dot.warn {
  background: var(--warn);
}

.dot.err {
  background: var(--danger);
}

/* ------------ Buttons ------------ */
.btn {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: var(--fg);
  border-radius: var(--radius-sm);
  padding: 7px 14px;
  font-size: 14px;
  cursor: pointer;
  transition:
    background 120ms ease,
    border-color 120ms ease,
    color 120ms ease;
}

.btn:hover {
  background: var(--bg-3);
}

.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-fg);
  font-weight: 600;
}

.btn-primary:hover {
  background: #7fb6ff;
}

.btn-ghost {
  border-color: var(--line);
  color: var(--fg-dim);
}

.btn-ghost:hover {
  color: var(--fg);
  border-color: #3a455a;
}

.btn-icon {
  padding: 4px 10px;
  font-size: 18px;
  line-height: 1;
}

/* ------------ Chat area ------------ */
.chat-main {
  overflow-y: auto;
  padding: 24px 20px;
}

.empty-state {
  max-width: 540px;
  margin: 12vh auto 0;
  text-align: center;
}

.empty-state h1 {
  font-weight: 600;
  font-size: 24px;
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}

.empty-state p {
  color: var(--fg-dim);
}

.empty-state-cta {
  margin-top: 24px;
}

.messages {
  list-style: none;
  margin: 0 auto;
  padding: 0;
  max-width: 780px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.msg {
  padding: 14px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-2);
  white-space: pre-wrap;
  word-wrap: break-word;
}

.msg-user {
  background: var(--bg-3);
  align-self: flex-end;
  max-width: 85%;
}

.msg-assistant {
  align-self: flex-start;
  max-width: 95%;
}

.msg-meta {
  display: flex;
  gap: 10px;
  margin-bottom: 6px;
  color: var(--fg-dim);
  font-size: 12px;
  font-family: var(--font-mono);
}

.msg-meta .tag {
  padding: 1px 6px;
  border-radius: 10px;
  background: var(--bg);
  border: 1px solid var(--line);
}

.msg-meta .tag.redacted {
  color: var(--warn);
  border-color: rgba(240, 198, 116, 0.4);
}

.msg-meta .tag.audit {
  color: var(--fg-dim);
}

.msg-error {
  border-color: rgba(239, 106, 106, 0.5);
  color: var(--danger);
}

.cursor {
  display: inline-block;
  width: 6px;
  height: 14px;
  background: var(--fg);
  vertical-align: text-bottom;
  margin-left: 1px;
  animation: blink 1s steps(2) infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

/* ------------ Composer ------------ */
.composer {
  display: flex;
  gap: 10px;
  padding: 12px 20px 20px;
  border-top: 1px solid var(--line);
  background: var(--bg-2);
  align-items: flex-end;
  position: sticky;
  bottom: 0;
}

.prompt {
  flex: 1;
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  resize: none;
  font: inherit;
  max-height: 200px;
  line-height: 1.4;
}

.prompt:focus {
  outline: none;
  border-color: var(--accent);
}

.prompt[disabled] {
  opacity: 0.6;
}

.send-btn {
  padding: 10px 18px;
}

/* ------------ Settings dialog ------------ */
.settings-dialog {
  background: var(--bg-2);
  color: var(--fg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0;
  min-width: 420px;
  max-width: 560px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
}

.settings-dialog::backdrop {
  background: rgba(0, 0, 0, 0.6);
}

.settings-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 18px 20px 16px;
}

.settings-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line);
  margin: -8px -4px 0;
  padding: 0 4px 12px;
}

.settings-header h2 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
}

.settings-group {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 14px 14px 10px;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.settings-group legend {
  padding: 0 6px;
  color: var(--fg-dim);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.settings-group label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13px;
}

.settings-group input {
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  font: inherit;
  font-size: 14px;
}

.settings-group input:focus {
  outline: none;
  border-color: var(--accent);
}

.hint {
  color: var(--fg-dim);
  font-size: 12px;
  margin: 0;
}

.settings-footer {
  display: flex;
  gap: 10px;
  align-items: center;
  border-top: 1px solid var(--line);
  padding-top: 14px;
  margin-top: 4px;
}

.grow {
  flex: 1;
}

/* ------------ Responsive ------------ */
@media (max-width: 600px) {
  .topbar,
  .composer {
    padding-left: 14px;
    padding-right: 14px;
  }
  .chat-main {
    padding: 16px 14px;
  }
  .settings-dialog {
    min-width: min(92vw, 420px);
  }
}