:root {
  --bg: #12141a;
  --panel: #1b1e27;
  --panel2: #232735;
  --border: #323848;
  --text: #e6e8ee;
  --muted: #9aa1b2;
  --accent: #4f8cff;
  --accent2: #7c5cff;
  --ok: #35c98e;
  --warn: #f2b344;
  --err: #f26363;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
}
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 22px;
  border-bottom: 1px solid var(--border);
}
header h1 { font-size: 18px; margin: 0; }
.gateway-key { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); }
.gateway-key input {
  width: 280px;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 6px 10px;
}

nav#tabs {
  display: flex;
  gap: 4px;
  padding: 10px 22px 0;
  border-bottom: 1px solid var(--border);
}
.tab {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 14px;
  padding: 10px 16px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
}
.tab.active { color: var(--text); border-bottom-color: var(--accent); }

main { padding: 18px 22px; max-width: 1080px; margin: 0 auto; }
.panel { display: none; }
.panel.active { display: block; }

.toolbar {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 12px;
  font-size: 13px;
  color: var(--muted);
}
.toolbar label { display: flex; align-items: center; gap: 6px; }
.toolbar .check { cursor: pointer; }
select, textarea, input[type="text"], input[type="password"] {
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 7px 10px;
  font-size: 14px;
}
select { min-width: 220px; }
textarea { width: 100%; resize: vertical; font-family: inherit; }
button {
  background: var(--accent);
  border: none;
  color: #fff;
  border-radius: 6px;
  padding: 8px 18px;
  font-size: 14px;
  cursor: pointer;
  margin-top: 8px;
}
button:hover { filter: brightness(1.1); }
button:disabled { opacity: 0.5; cursor: not-allowed; }
button.secondary { background: var(--panel2); color: var(--muted); border: 1px solid var(--border); margin-top: 0; }
.meta { font-size: 12px; color: var(--muted); }

body.auth-required nav#tabs,
body.auth-required main {
  display: none;
}
.auth-screen[hidden] { display: none; }
.auth-screen {
  min-height: calc(100vh - 61px);
  display: grid;
  place-items: center;
  padding: 24px;
}
.auth-panel {
  width: min(460px, 100%);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
}
.auth-panel h2 {
  margin: 0 0 8px;
  font-size: 20px;
}
.auth-panel p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 14px;
}
.auth-row {
  display: flex;
  gap: 10px;
}
.auth-row input {
  min-width: 0;
  flex: 1;
}
.auth-row button {
  margin-top: 0;
  white-space: nowrap;
}
.auth-error {
  min-height: 18px;
  margin-top: 10px;
  color: var(--err);
  font-size: 13px;
}

/* 聊天 */
#chat-messages {
  min-height: 320px;
  max-height: 55vh;
  overflow-y: auto;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 10px;
}
.msg { margin-bottom: 12px; }
.msg .role { font-size: 12px; color: var(--muted); margin-bottom: 3px; }
.msg .bubble {
  display: inline-block;
  max-width: 85%;
  padding: 9px 13px;
  border-radius: 10px;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 14px;
  line-height: 1.55;
}
.msg.user { text-align: right; }
.msg.user .bubble { background: var(--accent2); }
.msg.assistant .bubble { background: var(--panel2); }
.msg.error .bubble { background: rgba(242, 99, 99, 0.15); border: 1px solid var(--err); color: var(--err); }
.input-row { display: flex; gap: 10px; align-items: flex-end; }
.input-row textarea { flex: 1; }
.input-row button { margin-top: 0; height: 42px; }
.bubble .chat-img { display: block; max-width: 240px; border-radius: 8px; margin-top: 6px; }
#chat-attachments { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 8px; }
.attach-thumb { position: relative; display: inline-block; }
.attach-thumb img { height: 56px; border-radius: 6px; border: 1px solid var(--border); display: block; }
.attach-thumb button {
  position: absolute; top: -6px; right: -6px;
  width: 18px; height: 18px; padding: 0; margin: 0;
  border-radius: 50%; background: var(--err); color: #fff;
  font-size: 12px; line-height: 16px;
}

/* 输出区 */
.output {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  margin-top: 12px;
  min-height: 40px;
  font-size: 13px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}
.output img { max-width: 100%; border-radius: 8px; margin: 6px 0; }
.output.error { color: var(--err); }
.output .err { color: var(--err); }

/* 用量 */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 500; }
.bar {
  background: var(--panel2);
  border-radius: 4px;
  height: 8px;
  width: 120px;
  overflow: hidden;
  display: inline-block;
  vertical-align: middle;
  margin-right: 8px;
}
.bar i { display: block; height: 100%; background: var(--ok); }
.bar i.warn { background: var(--warn); }
.bar i.full { background: var(--err); }
.key-chip {
  display: inline-block;
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 12px;
  margin: 4px 8px 4px 0;
  font-size: 13px;
}
.key-chip.cooling { border-color: var(--warn); color: var(--warn); }
h3 { font-size: 14px; color: var(--muted); margin: 18px 0 8px; }

/* Keys 管理 */
.key-add { display: flex; gap: 10px; align-items: center; margin-bottom: 16px; }
.key-add input[type="text"]:first-child { flex: 1; }
.key-add button { margin-top: 0; }
.key-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  margin-bottom: 12px;
}
.key-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.key-head code { color: var(--accent); }
.key-head button { margin-top: 0; }
.key-limits { margin-top: 12px; }
.key-limits input[type="number"] { width: 90px; background: var(--panel2); border: 1px solid var(--border); color: var(--text); border-radius: 4px; padding: 4px 6px; }
.key-limits input[type="text"] { min-width: 260px; background: var(--panel2); }
.key-limits button { margin-top: 8px; margin-right: 8px; }
.key-limits td button { margin: 0; padding: 4px 10px; font-size: 12px; }