*{margin:0;padding:0;box-sizing:border-box}
body{background:#0f0f13;font-family:-apple-system,'Noto Sans JP',sans-serif;min-height:100vh;display:flex;align-items:center;justify-content:center}
.login-wrapper{width:100%;max-width:380px;padding:24px}
.login-card{background:#1a1a24;border:1px solid #2e2e42;border-radius:16px;padding:40px 32px;text-align:center}
.logo{font-size:48px;margin-bottom:12px}
h1{font-size:20px;font-weight:700;color:#e2e2f0;margin-bottom:4px}
.subtitle{font-size:13px;color:#888;margin-bottom:28px}
.field{text-align:left;margin-bottom:16px}
.field label{display:block;font-size:13px;color:#888;margin-bottom:6px}
.field input{width:100%;background:#242432;border:1px solid #2e2e42;border-radius:8px;color:#e2e2f0;padding:10px 14px;font-size:15px;outline:none;transition:border-color .15s}
.field input:focus{border-color:#7c3aed}
.error{background:rgba(220,38,38,.15);border:1px solid #dc2626;border-radius:6px;padding:10px 14px;font-size:13px;color:#f87171;margin-bottom:16px;text-align:left}
.btn-login{width:100%;background:#7c3aed;border:none;border-radius:8px;color:#fff;padding:12px;font-size:16px;font-weight:600;cursor:pointer;transition:background .15s;margin-top:4px}
.btn-login:hover{background:#6d28d9}
.btn-login:disabled{opacity:.6;cursor:not-allowed}