/* ============================================================
   工单知识库系统 - 登录页样式
   本地化资源：由 public/login.php 引用
   ============================================================ */
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,"Microsoft YaHei",sans-serif;background:linear-gradient(135deg,#1e293b 0%,#2563eb 120%);min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}
.login-card{background:#fff;border-radius:18px;box-shadow:0 24px 80px rgba(0,0,0,.3);width:100%;max-width:400px;padding:40px 38px}
.logo{width:56px;height:56px;background:linear-gradient(135deg,#2563eb,#1d4ed8);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:28px;margin:0 auto 14px;box-shadow:0 8px 24px rgba(37,99,235,.35)}
.logo-text{text-align:center;font-size:20px;font-weight:700;color:#1e293b}
.logo-sub{text-align:center;font-size:13px;color:#94a3b8;margin:6px 0 28px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:#64748b;margin-bottom:6px}
.field input{width:100%;padding:11px 14px;border:1px solid #e2e8f0;border-radius:10px;font-size:14px;transition:.2s}
.field input:focus{outline:none;border-color:#2563eb;box-shadow:0 0 0 3px rgba(37,99,235,.12)}
.error{background:#fef2f2;color:#dc2626;border:1px solid #fecaca;border-radius:10px;padding:10px 14px;font-size:13px;margin-bottom:16px}
.welcome{background:#f0fdf4;color:#16a34a;border:1px solid #bbf7d0;border-radius:10px;padding:10px 14px;font-size:13px;margin-bottom:16px}
.btn{display:block;width:100%;padding:12px;background:#2563eb;color:#fff;border:none;border-radius:10px;font-size:15px;font-weight:600;cursor:pointer;transition:.2s}
.btn:hover{background:#1d4ed8}
.hint{text-align:center;font-size:12px;color:#94a3b8;margin-top:18px;line-height:1.8}
.hint code{background:#f1f5f9;padding:1px 6px;border-radius:4px;color:#475569}