:root {
  --bg: #0f0f10;
  --text: #ffffff;
  --hint: #8a8a8f;
  --link: #6ab7ff;
  --button: #2ea6ff;
  --button-text: #ffffff;
  --secondary-bg: #1b1b1d;
  --border: #2a2a2d;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  overflow: hidden;
}

#app {
  position: relative;
  height: 100%;
}

/* ---------- сайдбар (список чатов) ---------- */

#sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 20;
  display: none;
}
#sidebar-overlay.visible { display: block; }

#sidebar {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  width: 78%;
  max-width: 300px;
  background: var(--secondary-bg);
  z-index: 21;
  transform: translateX(-100%);
  transition: transform 0.2s ease;
  padding: calc(12px + env(safe-area-inset-top, 0px)) 10px 12px;
  display: flex;
  flex-direction: column;
}
#sidebar.open { transform: translateX(0); }

#new-chat-btn {
  background: var(--button);
  color: var(--button-text);
  border: none;
  border-radius: 12px;
  padding: 12px;
  font-size: 15px;
  margin-bottom: 10px;
  flex-shrink: 0;
}

#thread-list {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.thread-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 10px;
  border-radius: 10px;
  color: var(--text);
  font-size: 14px;
  cursor: pointer;
}
.thread-item.active { background: rgba(46, 166, 255, 0.18); }
.thread-item .title { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.thread-item .del-btn { color: var(--hint); font-size: 13px; padding: 2px 6px; }

/* ---------- главная область ---------- */

#main {
  height: 100%;
  display: flex;
  flex-direction: column;
}

header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: calc(10px + env(safe-area-inset-top, 0px)) 12px 10px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

header button {
  background: none;
  border: none;
  color: var(--text);
  font-size: 20px;
  padding: 4px 6px;
}

#chat-title {
  flex: 1;
  font-size: 15px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-align: center;
}

.tab-content {
  display: none;
  flex: 1;
  min-height: 0;
  flex-direction: column;
}
.tab-content.active { display: flex; }

#tab-tools {
  overflow-y: auto;
  padding: 4px 16px 16px;
}

.tools-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
}
.tools-header h2 { font-size: 17px; margin: 0; }
.tools-header button { background: none; border: none; color: var(--hint); font-size: 18px; }

/* ---------- сообщения ---------- */

#messages {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px 14px 8px;
}

.msg {
  max-width: 88%;
  padding: 10px 13px;
  border-radius: 16px;
  font-size: 15px;
  line-height: 1.45;
}

.msg p { margin: 0 0 8px; }
.msg p:last-child { margin-bottom: 0; }
.msg pre {
  background: rgba(0,0,0,0.35);
  padding: 10px;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 13px;
}
.msg code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
}
.msg :not(pre) > code {
  background: rgba(0,0,0,0.3);
  padding: 1px 5px;
  border-radius: 5px;
}
.msg ul, .msg ol { margin: 4px 0 8px; padding-left: 20px; }

.msg-user {
  align-self: flex-end;
  background: var(--button);
  color: var(--button-text);
  border-bottom-right-radius: 4px;
  white-space: pre-wrap;
}

.msg-assistant {
  align-self: flex-start;
  background: var(--secondary-bg);
  color: var(--text);
  border-bottom-left-radius: 4px;
}

.msg-note {
  align-self: flex-start;
  color: var(--hint);
  font-size: 12px;
  padding: 0 4px;
}

/* ---------- поле ввода ---------- */

#chat-form {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px calc(10px + env(safe-area-inset-bottom, 0px));
  flex-shrink: 0;
  border-top: 1px solid var(--border);
}

#attach-btn {
  background: var(--secondary-bg);
  border: none;
  color: var(--text);
  font-size: 18px;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  flex-shrink: 0;
}

#chat-form input[type="text"] {
  flex: 1;
  padding: 10px 14px;
  border-radius: 20px;
  border: none;
  background: var(--secondary-bg);
  color: var(--text);
  font-size: 15px;
  min-width: 0;
}

#chat-form button[type="submit"] {
  background: var(--button);
  color: var(--button-text);
  border: none;
  border-radius: 50%;
  width: 38px;
  height: 38px;
  font-size: 16px;
  flex-shrink: 0;
}

#attach-preview {
  padding: 0 16px 8px;
  font-size: 12px;
  color: var(--hint);
}
#attach-preview.hidden { display: none; }

/* ---------- инструменты ---------- */

.tool-card {
  background: var(--secondary-bg);
  border-radius: 14px;
  padding: 14px;
  margin-bottom: 14px;
}
.tool-card h3 { margin: 0 0 10px; font-size: 15px; }
.tool-card form { display: flex; flex-direction: column; gap: 8px; margin-bottom: 6px; }
.tool-card input {
  padding: 10px 12px;
  border-radius: 10px;
  border: none;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}
.tool-card form button, #chat-form button, .secondary {
  background: var(--button);
  color: var(--button-text);
  border: none;
  border-radius: 10px;
  padding: 10px;
  font-size: 14px;
}
.secondary {
  background: var(--bg) !important;
  color: var(--text) !important;
  width: 100%;
  margin-top: 4px;
}

.status-line { color: var(--hint); font-size: 13px; margin: 6px 0; }
.hint { color: var(--hint); font-size: 12px; margin: 8px 0 0; }

.result-list { margin-top: 10px; display: flex; flex-direction: column; gap: 8px; max-height: 240px; overflow-y: auto; }

.search-result, .repo-item {
  display: block;
  background: var(--bg);
  border-radius: 10px;
  padding: 8px 10px;
  color: var(--text);
  text-decoration: none;
  font-size: 13px;
}
.search-result b { color: var(--link); font-size: 14px; }
.search-result span { color: var(--hint); }

.output-box {
  background: var(--bg);
  border-radius: 10px;
  padding: 10px;
  font-size: 12px;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 200px;
  overflow-y: auto;
  margin: 0;
}

.danger {
  width: 100%;
  background: #3a1414;
  color: #ff6b6b;
  border: none;
  border-radius: 12px;
  padding: 12px;
  font-size: 14px;
}