:root {
  --bg: #f3f5f9;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-soft: #eaf1ff;
  --border: #e5e7eb;
  --green: #16a34a;
  --orange: #ea580c;
  --red: #dc2626;
  --radius: 12px;
  --shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.6;
}
a { color: var(--primary); text-decoration: none; }
.hidden { display: none !important; }

.btn {
  display: inline-block; padding: 10px 20px; border-radius: 10px; border: none;
  font-size: 14px; font-weight: 600; cursor: pointer; transition: all .15s;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { background: #fff; color: var(--primary); border: 1px solid var(--primary); }
.btn-outline:hover { background: var(--primary-soft); }
.btn-danger { background: #fff; color: var(--red); border: 1px solid #fecaca; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.input, .textarea, .select {
  width: 100%; padding: 11px 14px; border: 1px solid var(--border); border-radius: 10px;
  font-size: 14px; font-family: inherit; outline: none; background: #fff; color: var(--text);
}
.input:focus, .textarea:focus, .select:focus { border-color: var(--primary); }
.textarea { resize: vertical; min-height: 60px; }
.select { appearance: auto; }

.card { background: var(--card); border-radius: 14px; padding: 20px; box-shadow: var(--shadow); }
.badge { font-size: 12px; font-weight: 600; padding: 3px 10px; border-radius: 20px; }
.badge-green { background: #dcfce7; color: var(--green); }
.badge-gray { background: #f3f4f6; color: var(--muted); }
.badge-orange { background: #ffedd5; color: var(--orange); }
.badge-red { background: #fee2e2; color: var(--red); }
.badge-blue { background: #dbeafe; color: var(--primary); }

.error-text { color: var(--red); font-size: 13px; min-height: 18px; }