:root {
  --bg: #0e1116;
  --bg-2: #161b22;
  --bg-3: #1f2630;
  --fg: #e6edf3;
  --fg-dim: #8b949e;
  --accent: #58a6ff;
  --good: #3fb950;
  --bad: #f85149;
  --warn: #d29922;
  --border: #30363d;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

#app {
  display: grid;
  grid-template-columns: 320px 1fr;
  height: 100vh;
}

#sidebar {
  background: var(--bg-2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

#sidebar header {
  padding: 16px;
  border-bottom: 1px solid var(--border);
}
#sidebar h1 {
  margin: 0;
  font-size: 18px;
  font-family: var(--mono);
  letter-spacing: -0.5px;
}
.tag { margin: 4px 0 0; font-size: 11px; color: var(--fg-dim); }

#sidebar section {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}
#sidebar h2 {
  margin: 0 0 8px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--fg-dim);
}

#sidebar footer {
  margin-top: auto;
  padding: 8px 16px;
  border-top: 1px solid var(--border);
  font-size: 11px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.conn { color: var(--fg-dim); }
.conn.live { color: var(--good); }
.conn.dead { color: var(--bad); }
.version {
  margin-left: auto;
  color: var(--fg-dim);
  font-family: var(--mono);
  font-size: 10px;
  cursor: help;
}

button, .ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--fg);
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  font: inherit;
  margin: 2px 0;
}
button:hover { background: var(--bg-3); }
button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #06121f;
  font-weight: 600;
}
button.primary:hover { filter: brightness(1.1); }
.danger-btn { color: var(--bad); border-color: var(--bad); }
.danger-btn:hover { background: rgba(248,81,73,0.15); }

#wallet-list, #chat-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 8px;
}

.wallet-item, .chat-item {
  padding: 8px 10px;
  border-radius: 6px;
  background: var(--bg-3);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 12px;
  border: 1px solid transparent;
  overflow: hidden;
  text-overflow: ellipsis;
}
.wallet-item:hover, .chat-item:hover { border-color: var(--border); }
.wallet-item.active, .chat-item.active { border-color: var(--accent); }
.chat-item .peer { display: block; color: var(--fg-dim); font-size: 11px; }
.chat-item .badge {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 10px;
  font-size: 10px;
  margin-left: 6px;
}
.badge.pending { background: var(--warn); color: #1a1300; }
.badge.live { background: var(--good); color: #052a0e; }
.badge.unread {
  background: var(--accent);
  color: #06121f;
  font-weight: 700;
  margin-left: 6px;
}
.chat-item.has-unread {
  border-left: 3px solid var(--accent);
  padding-left: 7px;
}

details.danger { margin-top: 8px; }
details.danger summary { cursor: pointer; font-size: 11px; color: var(--fg-dim); }
details.danger button { display: block; width: 100%; margin: 4px 0; }

#main { overflow: hidden; display: flex; }

.centered {
  margin: auto;
  text-align: center;
  color: var(--fg-dim);
  padding: 32px;
}

.chat-view {
  display: flex; flex-direction: column;
  flex: 1;
  height: 100%;
}
.chat-header {
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center;
}
.chat-title { font-family: var(--mono); font-size: 13px; }
.chat-meta { font-size: 11px; color: var(--fg-dim); margin-top: 2px; font-family: var(--mono); }
.header-actions button { margin-left: 6px; }

.handshake-banner {
  background: var(--bg-2);
  border-bottom: 1px solid var(--warn);
  padding: 16px 20px;
}
.handshake-banner h3 { margin: 0 0 6px; color: var(--warn); }
.handshake-banner .instruction { font-size: 13px; margin: 0 0 12px; color: var(--fg-dim); }
.sas-box {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 12px;
}
.sas-label { font-size: 11px; color: var(--fg-dim); margin-bottom: 8px; }
.sas-words {
  font-family: var(--mono);
  font-size: 22px;
  font-weight: bold;
  letter-spacing: 2px;
  color: var(--good);
  word-spacing: 12px;
}
.sas-actions button { margin-right: 8px; }
.join-actions { display: flex; gap: 8px; margin-top: 16px; }

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.msg {
  max-width: 65%;
  padding: 8px 12px;
  border-radius: 12px;
  word-wrap: break-word;
}
.msg.mine { align-self: flex-end; background: var(--accent); color: #06121f; }
.msg.theirs { align-self: flex-start; background: var(--bg-3); }
.msg.system {
  align-self: center;
  background: transparent;
  color: var(--fg-dim);
  font-size: 11px;
  font-style: italic;
  max-width: 80%;
  text-align: center;
}
.msg .ts { display: block; font-size: 10px; opacity: 0.7; margin-top: 4px; }
.msg img { max-width: 100%; border-radius: 8px; display: block; }

.composer {
  border-top: 1px solid var(--border);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.composer textarea {
  width: 100%;
  background: var(--bg-3);
  border: 1px solid var(--border);
  color: var(--fg);
  border-radius: 6px;
  padding: 8px;
  font: inherit;
  resize: vertical;
}
.composer-actions {
  display: flex; align-items: center; gap: 8px;
}
.composer-actions .composer-hint {
  font-size: 11px; color: var(--fg-dim); text-align: left;
}
.composer-actions button[type="submit"] {
  margin-left: auto;
}
.attach { cursor: pointer; }

.chat-view.drop-target {
  outline: 2px dashed var(--accent);
  outline-offset: -8px;
  background: rgba(88, 166, 255, 0.04);
}

.file-msg { display: flex; flex-direction: column; gap: 6px; }
.file-msg img {
  max-width: 100%;
  max-height: 360px;
  border-radius: 8px;
  display: block;
}
.file-link {
  display: block;
  padding: 8px 10px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: inherit;
  text-decoration: none;
}
.file-link:hover { background: rgba(0, 0, 0, 0.3); }
.file-link.pending { cursor: default; }
.file-link.pending:hover { background: rgba(0, 0, 0, 0.2); }
.file-name { font-weight: 600; font-size: 13px; word-break: break-all; }
.file-meta { font-size: 11px; opacity: 0.75; margin-top: 2px; }
.file-progress-bar {
  margin-top: 6px;
  height: 4px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 2px;
  overflow: hidden;
}
.file-progress-bar span {
  display: block; height: 100%;
  background: var(--accent);
  transition: width 0.15s ease-out;
}
.msg.mine .file-link { background: rgba(0,0,0,0.18); border-color: rgba(0,0,0,0.25); }
.msg.mine .file-link:hover { background: rgba(0,0,0,0.28); }

.wizard { padding: 32px; max-width: 640px; }
.wizard h2 { margin-top: 0; }
.wizard label { display: block; margin: 12px 0 4px; font-size: 12px; color: var(--fg-dim); }
.wizard input, .wizard select {
  width: 100%;
  background: var(--bg-3);
  border: 1px solid var(--border);
  color: var(--fg);
  padding: 8px;
  border-radius: 6px;
  font: inherit;
  font-family: var(--mono);
}
.wizard .hint { font-size: 12px; color: var(--fg-dim); }
.wizard .link-new-address { color: var(--accent); cursor: pointer; text-decoration: underline; }
.wizard pre {
  background: var(--bg-3);
  border: 1px solid var(--border);
  padding: 10px;
  border-radius: 6px;
  font-size: 11px;
  overflow-x: auto;
}
.invite-link {
  font-family: var(--mono);
  background: var(--bg-3);
  border: 1px solid var(--border);
  padding: 10px;
  border-radius: 6px;
  word-break: break-all;
  font-size: 12px;
  margin: 8px 0;
}
.addr-display {
  font-family: var(--mono);
  font-size: 14px;
  background: var(--bg-3);
  padding: 12px;
  border-radius: 6px;
  word-break: break-all;
}

.hidden { display: none !important; }