*{box-sizing:border-box;margin:0;padding:0}:root{--primary:#4f57ff;--primary-hover:#3f46e8;--primary-light:#4f57ff1a;--danger:#ef4444;--text:#1f2937;--text-muted:#6b7280;--light:#f3f4f6;--border:#e5e7eb;--success:#10b981}body{background:linear-gradient(135deg, var(--primary) 0%, #5b21b6 100%);justify-content:center;align-items:center;min-height:100vh;padding:20px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;display:flex}.login-container{background:#fff;border-radius:16px;width:100%;max-width:400px;padding:40px;animation:.3s ease-out slideUp;box-shadow:0 20px 60px #00000026}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.login-header{text-align:center;margin-bottom:30px}.logo{background:linear-gradient(135deg, var(--primary), #5b21b6);color:#fff;border-radius:12px;justify-content:center;align-items:center;width:48px;height:48px;margin:0 auto 16px;font-size:24px;font-weight:700;display:flex}h1{color:var(--text);margin-bottom:8px;font-size:24px}.subtitle{color:var(--text-muted);font-size:14px}.form-group{margin-bottom:20px}label{color:var(--text);margin-bottom:8px;font-size:14px;font-weight:500;display:block}input{border:1px solid var(--border);border-radius:8px;width:100%;padding:12px 14px;font-size:14px;transition:all .2s}input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light);outline:none}input::placeholder{color:var(--text-muted)}.login-button{background:linear-gradient(135deg, var(--primary), #5b21b6);color:#fff;cursor:pointer;border:none;border-radius:8px;width:100%;margin-top:24px;padding:12px;font-size:16px;font-weight:600;transition:all .2s}.login-button:hover:not(:disabled){background:linear-gradient(135deg, var(--primary-hover), #4c1d95);transform:translateY(-2px);box-shadow:0 10px 24px #4f57ff4d}.login-button:disabled{opacity:.6;cursor:not-allowed}.error-message{color:#991b1b;border-left:4px solid var(--danger);background:#fee2e2;border-radius:8px;margin-bottom:20px;padding:12px 14px;font-size:14px;display:none}.error-message.show{animation:.2s ease-out slideDown;display:block}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.success-message{color:#166534;border-left:4px solid var(--success);background:#dcfce7;border-radius:8px;margin-bottom:20px;padding:12px 14px;font-size:14px;display:none}.success-message.show{animation:.2s ease-out slideDown;display:block}.loading-spinner{border:2px solid #ffffff4d;border-top-color:#fff;border-radius:50%;width:16px;height:16px;margin-right:8px;animation:.6s linear infinite spin;display:none}@keyframes spin{to{transform:rotate(360deg)}}.button-content{justify-content:center;align-items:center;display:flex}.footer{text-align:center;color:var(--text-muted);margin-top:24px;font-size:13px}.version{bottom:calc(16px + env(safe-area-inset-bottom,0px));right:calc(16px + env(safe-area-inset-right,0px));color:var(--text-muted);font-size:12px;position:absolute}.footer a{color:var(--primary)}.hint{color:var(--text-muted);margin-top:-12px;margin-bottom:20px;font-size:12px}