@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');
        * { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Inter', sans-serif; }
        body { background-color: #f8f9fa; display: flex; justify-content: center; min-height: 100vh; }
        .mobile-container { width: 100%; display: flex; flex-direction: column; align-items: center; background-color: #f8f9fa; position: relative; overflow-x: hidden; }
        header { width: 100%; display: flex; justify-content: space-between; align-items: center; padding: 15px 5%; background: white; box-shadow: 0 2px 10px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 10; }
        .menu-btn { font-size: 24px; color: #111; cursor: pointer; z-index: 101; }
        .logo { display: flex; align-items: center; }
        @keyframes shake {
            0%, 100% { transform: translateX(0); }
            20%, 60% { transform: translateX(-5px); }
            40%, 80% { transform: translateX(5px); }
        }
        .error-message { background: #ffebee; color: #c62828; padding: 12px; border-radius: 6px; text-align: center; margin-bottom: 15px; font-size: 14px; font-weight: 600; border: 1px solid #ffcdd2; animation: shake 0.4s ease-in-out; }
        .header-logo { height: 60px; width: auto; max-width: 160px; object-fit: contain; }
        .overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.4); opacity: 0; visibility: hidden; transition: all 0.3s ease; z-index: 99; }
        .overlay.show { opacity: 1; visibility: visible; }
        .sidebar { position: absolute; top: 0; left: -75%; width: 75%; height: 100%; background: white; z-index: 100; transition: all 0.3s ease-in-out; padding: 80px 20px 20px; box-shadow: 2px 0 10px rgba(0,0,0,0.1); }
        .sidebar.open { left: 0; }
        .sidebar ul { list-style: none; }
        .sidebar ul li { padding: 15px 0; border-bottom: 1px solid #eee; font-size: 16px; color: #333; }
        .main-content { width: 100%; max-width: 450px; padding: 40px 20px; display: flex; justify-content: center; }
        .login-card { background: white; width: 100%; border-radius: 12px; padding: 40px 30px; box-shadow: 0 10px 30px rgba(0,0,0,0.05); border: 1px solid #eee; }
        .login-card h2 { text-align: center; font-size: 24px; color: #111; margin-bottom: 25px; font-weight: 700; }
        .form-group { margin-bottom: 18px; }
        .form-group label { display: block; font-size: 13px; color: #555; margin-bottom: 6px; }
        .form-group .label-row { display: flex; justify-content: space-between; }
        .forgot-link { color: #219653; text-decoration: none; font-size: 13px; }
        .form-group input[type="email"], .form-group input[type="password"] { width: 100%; padding: 12px 15px; border: 1px solid #ddd; border-radius: 6px; font-size: 14px; outline: none; transition: border 0.3s; }
        .form-group input:focus { border-color: #219653; }
        .remember-group { margin-bottom: 20px; }
        .custom-checkbox-container { display: flex; align-items: center; position: relative; cursor: pointer; font-size: 14px; color: #333; user-select: none; gap: 10px; }
        .custom-checkbox-container input { position: absolute; opacity: 0; cursor: pointer; height: 0; width: 0; }
        .checkmark { height: 20px; width: 20px; background-color: #fff; border: 2px solid #ddd; border-radius: 5px; transition: all 0.3s ease; display: flex; align-items: center; justify-content: center; position: relative; }
        .custom-checkbox-container:hover input ~ .checkmark { border-color: #219653; }
        .custom-checkbox-container input:checked ~ .checkmark { background-color: #219653; border-color: #219653; }
        .checkmark:after { content: ""; position: absolute; width: 5px; height: 10px; border: solid white; border-width: 0 2px 2px 0; transform: rotate(45deg) scale(0); transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275); top: 2px; }
        .custom-checkbox-container input:checked ~ .checkmark:after { transform: rotate(45deg) scale(1); }
        .captcha-box { display: flex; justify-content: space-between; align-items: center; border: 1px solid #e0e0e0; border-radius: 4px; padding: 10px 15px; background: #fdfdfd; margin-bottom: 20px; cursor: pointer; transition: 0.3s; }
        .captcha-left { display: flex; align-items: center; gap: 12px; font-size: 14px; color: #111; }
        .captcha-checkbox { width: 26px; height: 26px; border: 2px solid #ccc; border-radius: 3px; display: flex; justify-content: center; align-items: center; transition: all 0.3s ease; background: white; color: white; font-size: 16px; }
        .captcha-loading { border-radius: 50%; border-color: #f3f3f3; border-top-color: #333; animation: spin 1s linear infinite; }
        @keyframes spin { 100% { transform: rotate(360deg); } }
        .captcha-success { background: #219653; border-color: #219653; border-radius: 50%; }
        .captcha-right { text-align: right; font-size: 10px; color: #555; line-height: 1.2; }
        .login-btn { width: 100%; background-color: #27ae60; color: white; border: none; padding: 14px; border-radius: 6px; font-size: 15px; font-weight: 600; cursor: pointer; transition: background 0.3s; }
        .login-btn:hover { background-color: #219653; }
        .login-btn:disabled { background-color: #9ad5b3; cursor: not-allowed; }
        .divider { display: flex; align-items: center; text-align: center; margin: 20px 0; color: #999; font-size: 13px; }
        .divider::before, .divider::after { content: ''; flex: 1; border-bottom: 1px solid #eee; }
        .divider::before { margin-right: 15px; }
        .divider::after { margin-left: 15px; }
        .social-btn { width: 100%; display: flex; align-items: center; justify-content: center; gap: 10px; padding: 14px; border-radius: 6px; font-size: 14px; font-weight: 600; cursor: pointer; text-decoration: none; margin-bottom: 12px; transition: all 0.3s ease; position: relative; overflow: hidden; border: none; font-family: 'Inter', sans-serif; }
        .social-btn i { font-size: 18px; }
        .btn-guest { background-color: #111; color: white; box-shadow: 0 4px 10px rgba(0,0,0,0.1); }
        .btn-guest:hover { background-color: #333; }
        .btn-telegram { background-color: #229ED9; color: white; box-shadow: 0 4px 10px rgba(34, 158, 217, 0.2); }
        .btn-telegram:hover { background-color: #1c88ba; }
        
        .btn-disabled { background-color: #f1f3f5; color: #adb5bd; border: 1px solid #e9ecef; cursor: not-allowed; box-shadow: none; pointer-events: auto; }
        .btn-disabled .btn-content { display: flex; align-items: center; justify-content: center; gap: 10px; transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s; width: 100%; }
        .btn-disabled .maintenance-text { position: absolute; top: 0; left: 0; width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; background-color: #e9ecef; color: #495057; font-size: 13px; font-weight: 700; transform: translateY(100%); transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1); gap: 8px; }
        .btn-disabled:hover .btn-content { transform: translateY(-100%); opacity: 0; }
        .btn-disabled:hover .maintenance-text { transform: translateY(0); color: #212529; }
        .signup-link { text-align: center; margin-top: 25px; font-size: 13px; color: #666; padding-bottom: 20px; }
        .signup-link a { color: #27ae60; text-decoration: none; font-weight: 500; }