:root {
  --bg: #0f172a;
  --card: #1e293b;
  --card2: #273449;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --primary: #6366f1;
  --primary-d: #4f46e5;
  --accent: #10b981;
  --border: #334155;
  --danger: #ef4444;
  --warn: #f59e0b;
}
* { box-sizing: border-box; }
body {
  margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg); color: var(--text); min-height: 100vh;
  display: flex; flex-direction: column;
}
.wrap { max-width: 1080px; margin: 0 auto; width: 100%; padding: 0 20px; }
.topbar {
  background: rgba(15,23,42,.85); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10;
}
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.brand { color: var(--text); text-decoration: none; font-weight: 700; font-size: 18px; }
nav a { color: var(--muted); text-decoration: none; margin-left: 16px; font-size: 14px; }
nav a:hover, nav a.active { color: var(--text); }
.link-btn { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 14px; margin-left: 16px; }
.link-btn:hover { color: var(--text); }
main { flex: 1; padding: 32px 20px; }
.footer { border-top: 1px solid var(--border); padding: 16px 0; color: var(--muted); font-size: 13px; }
.footer .wrap { display: flex; justify-content: center; flex-wrap: wrap; gap: 16px; }
.user-menu { position: relative; display: inline-block; }
.user-trigger { cursor: pointer; color: var(--muted); font-size: 14px; user-select: none; margin-left: 16px; }
.user-trigger:hover { color: var(--text); }
.user-dropdown { position: absolute; top: 100%; right: 0; background: var(--card); border: 1px solid var(--border); border-radius: 8px; min-width: 120px; padding: 4px 0; z-index: 50; box-shadow: 0 4px 12px rgba(0,0,0,.3); }
.user-dropdown a { display: block; padding: 8px 16px; color: var(--text); text-decoration: none; font-size: 13px; margin: 0; }
.user-dropdown a:hover { background: var(--card2); }
code { background: #0b1220; padding: 2px 6px; border-radius: 4px; font-family: ui-monospace, "Consolas", monospace; }

.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 24px; margin-bottom: 20px; }
.card h2 { margin: 0 0 16px; font-size: 18px; }
.card h3 { margin: 16px 0 8px; font-size: 15px; color: var(--muted); }
input, button, select, textarea {
  font-family: inherit; font-size: 14px; padding: 10px 12px;
  border: 1px solid var(--border); background: var(--card2); color: var(--text);
  border-radius: 8px; outline: none;
}
input:focus, textarea:focus { border-color: var(--primary); }
button { cursor: pointer; background: var(--primary); border-color: var(--primary); color: white; }
button:hover { background: var(--primary-d); }
button.ghost { background: transparent; color: var(--text); }
button.danger { background: var(--danger); border-color: var(--danger); }
button.small { padding: 4px 10px; font-size: 12px; }
.btn-accent { background: var(--accent); border-color: var(--accent); }
label { display: block; margin: 10px 0 4px; font-size: 13px; color: var(--muted); }
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.row > * { flex: 1; min-width: 0; }
.muted { color: var(--muted); }
.tag { display: inline-block; padding: 2px 8px; border-radius: 12px; font-size: 12px; background: var(--card2); color: var(--muted); }
.tag.green { background: rgba(16,185,129,.15); color: var(--accent); }
.tag.red { background: rgba(239,68,68,.15); color: var(--danger); }
.tabs { display: flex; gap: 8px; margin-bottom: 16px; }
.tab { padding: 6px 16px; border-radius: 6px; border: 1px solid var(--border); background: var(--card2); color: var(--muted); cursor: pointer; font-size: 13px; transition: all .15s; }
.tab.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.tab-content { display: none; }
.tab-content.active { display: block; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 10px 8px; text-align: left; border-bottom: 1px solid var(--border); font-size: 13px; }
th { color: var(--muted); font-weight: 500; }
.drop {
  border: 2px dashed var(--border); border-radius: 12px; padding: 40px;
  text-align: center; cursor: pointer; transition: all .15s;
}
.drop:hover, .drop.drag { border-color: var(--primary); background: rgba(99,102,241,.05); }
.drop input { display: none; }
.img-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 12px; }
.img-grid .item { background: var(--card2); border-radius: 8px; overflow: hidden; }
.img-grid img { width: 100%; height: 120px; object-fit: cover; display: block; cursor: pointer; }
.img-grid .meta { padding: 6px 8px; font-size: 12px; color: var(--muted); }
.toast {
  position: fixed; top: 70px; right: 20px; z-index: 100;
  padding: 12px 16px; border-radius: 8px; background: var(--card); border: 1px solid var(--border);
  min-width: 200px; box-shadow: 0 8px 24px rgba(0,0,0,.3);
}
.toast.success { border-color: var(--accent); }
.toast.error { border-color: var(--danger); }
pre.code {
  background: #0b1220; padding: 12px; border-radius: 8px; overflow-x: auto;
  font-size: 12px; border: 1px solid var(--border);
}
.copy-row { display: flex; gap: 8px; align-items: center; }
.copy-row input { flex: 1; font-family: ui-monospace, monospace; font-size: 12px; }
.ai-prompt-wrap { position: relative; }
.ai-prompt-wrap .copy-btn {
  position: absolute; top: 12px; right: 12px;
  background: var(--card2); color: var(--text);
  border: 1px solid var(--border); border-radius: 6px;
  padding: 4px 12px; cursor: pointer; font-size: 12px;
  opacity: 0.7; transition: opacity .2s; z-index: 1;
}
.ai-prompt-wrap .copy-btn:hover { opacity: 1; background: var(--accent); border-color: var(--accent); }
.hero { text-align: center; padding: 40px 20px; }
.hero h1 { font-size: 32px; margin: 0 0 8px; }
.hero p { color: var(--muted); margin: 0 0 24px; }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-top: 24px; }
.feature { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; }
.feature .ico { font-size: 24px; }
.feature h3 { margin: 8px 0; }
.feature p { color: var(--muted); font-size: 13px; margin: 0; }