* { box-sizing: border-box; }
body {
    margin: 0; min-height: 100vh; font-family: 'Noto Sans KR', sans-serif; color: #e2e8f0;
    background: radial-gradient(circle at 20% 20%, rgba(99,102,241,.35), transparent 40%),
                radial-gradient(circle at 80% 80%, rgba(34,211,238,.25), transparent 40%), #0f172a;
}
.login-container { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px; }
.login-form {
    width: 100%; max-width: 400px; padding: 40px 34px; border-radius: 20px;
    background: rgba(30,41,59,.7); backdrop-filter: blur(16px);
    border: 1px solid rgba(148,163,184,.2); box-shadow: 0 30px 60px rgba(0,0,0,.45);
    animation: up .5s ease;
}
.login-logo { text-align: center; margin-bottom: 28px; }
.brand-badge { display: inline-flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 800; }
.badge-dot { width: 12px; height: 12px; border-radius: 50%; background: #22d3ee; box-shadow: 0 0 14px #22d3ee; }
.login-subtitle { color: #94a3b8 !important; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 13px; color: #94a3b8; margin-bottom: 6px; }
.form-input {
    width: 100%; padding: 12px 14px; border-radius: 10px; font: inherit; font-size: 15px;
    background: #0f172a; color: #e2e8f0; border: 1px solid #334155; transition: .2s;
}
.form-input:focus { outline: none; border-color: #6366f1; box-shadow: 0 0 0 3px rgba(99,102,241,.3); }
.btn { border: 0; cursor: pointer; font: inherit; }
.login-btn {
    width: 100%; padding: 13px; border-radius: 10px; font-size: 16px; font-weight: 700; color: #fff;
    background: linear-gradient(90deg, #6366f1, #8b5cf6); transition: .2s; margin-top: 6px;
}
.login-btn:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(99,102,241,.45); }
.form-group-join { margin-top: 20px; text-align: center; font-size: 13px; color: #94a3b8; }
.form-group-join a { color: #22d3ee; margin-left: 6px; text-decoration: none; }
@keyframes up { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }