/* Admin CSS */
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #f0f4f8; color: #333; font-size: 14px; }

/* Login */
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh;
  background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%); }
.login-box { background: #fff; padding: 36px; border-radius: 12px; width: 360px;
  box-shadow: 0 10px 40px rgba(0,0,0,.1); display: flex; flex-direction: column; gap: 14px; }
.login-box h2 { text-align: center; color: #2d4858; margin-bottom: 10px; }
.login-box input { padding: 10px 14px; border: 1px solid #ddd; border-radius: 8px; outline: none; font-size: 14px; }
.captcha-row { display: flex; gap: 8px; align-items: center; }
.captcha-row input { flex: 1; }
.captcha-row img { width: 120px; height: 42px; border: 1px solid #ddd; border-radius: 6px; cursor: pointer; }
.login-box input:focus { border-color: #4a90e2; }
.login-box button { padding: 10px; background: #4a90e2; color: #fff; border: none; border-radius: 8px;
  font-size: 15px; cursor: pointer; }
.login-box button:hover { background: #357abd; }
.muted { color: #999; font-size: 12px; text-align: center; }

/* Admin layout */
.admin { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }
.admin-side { background: #2d4858; color: #cbd6df; padding: 20px 0; }
.admin-side h1 { color: #fff; padding: 0 22px 16px; font-size: 18px; border-bottom: 1px solid #3e5b6e; }
.admin-side nav a { display: block; padding: 12px 22px; color: #cbd6df; text-decoration: none; }
.admin-side nav a.active, .admin-side nav a:hover { background: #3e5b6e; color: #fff; }
.admin-side .logout { display: block; margin: 18px 22px 0; padding: 8px 14px; background: #d35454; color: #fff; text-align: center; border-radius: 6px; text-decoration: none; }

.admin-main { padding: 28px 32px; }
.admin-main h2 { margin-bottom: 20px; color: #2d4858; font-size: 20px; }

.section { background: #fff; padding: 22px; border-radius: 10px; margin-bottom: 20px; box-shadow: 0 2px 8px rgba(0,0,0,.04); }
.section h3 { margin-bottom: 16px; color: #2d4858; font-size: 16px; }

input[type=text], input[type=password], input[type=url], textarea, select {
  width: 100%; padding: 8px 12px; border: 1px solid #ddd; border-radius: 6px;
  font-family: inherit; font-size: 14px; outline: none; }
input:focus, textarea:focus, select:focus { border-color: #4a90e2; }
textarea { min-height: 200px; resize: vertical; font-family: Menlo, Consolas, monospace; }
label { display: block; margin: 10px 0 4px; color: #555; font-size: 13px; }

button, .btn { padding: 8px 16px; background: #4a90e2; color: #fff; border: none; border-radius: 6px; cursor: pointer; font-size: 14px; }
button:hover { background: #357abd; }
.btn-danger { background: #d35454; }
.btn-danger:hover { background: #b53e3e; }
.btn-sm { padding: 4px 10px; font-size: 12px; }

.row { display: flex; gap: 12px; }
.row > * { flex: 1; }

table { width: 100%; border-collapse: collapse; }
table th, table td { padding: 10px; border-bottom: 1px solid #eee; text-align: left; font-size: 13px; }
table th { background: #f5f8fb; color: #555; font-weight: 600; }
table td .btn { margin-right: 4px; }

.tabs { display: flex; gap: 12px; border-bottom: 2px solid #eee; margin-bottom: 18px; }
.tabs button { background: transparent; color: #666; border: none; padding: 10px 14px; cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -2px; }
.tabs button.active { color: #4a90e2; border-color: #4a90e2; }

.help { color: #888; font-size: 12px; margin-top: 4px; }
.success { color: #2ea44f; }
.error { color: #d35454; }

#editor-preview { background: #fafafa; padding: 14px; border-radius: 6px; min-height: 200px; }
#editor-preview img { max-width: 100%; height: auto; }